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T6TR VHF 50 W Transceiver

Page 17

Maintenance

Back to Transceiver
Main Page

Removing and Refitting the Power Supply

The Power Supply is located as shown in

. A module removal diagram is shown in

.

Removal

Before attempting to remove the Power Supply, ensure that the transceiver is isolated from the ac and
dc input supplies. Then proceed as follows:

Dangerous voltages are present within the transceiver. Care must be taken by personnel to
avoid accidental contact with exposed circuitry when the bottom cover is removed and
power is applied to the radio.

(1)

Remove the transceiver’s top and bottom covers as described on

(2)

Support the radio on its side.

(3)

Locate the power supply. From the bottom half of the unit remove the four No. 6 x 32 UNC
countersunk screws that secure the power supply to the transceiver’s mainframe. During this
operation support the power supply from the top half of the unit.

(4)

Withdraw the power supply from the chassis sufficient to allow access to the power terminal
blocks taking care not to damage the ac terminal plastic supply guard.

(5)

Remove the connector CN4 (power supply to the power regulator).

(6)

Disconnect the dc wires from the eight connector terminal block.

(7)

Slide back the terminal block cover and disconnect the ac wires from the three connector terminal
block (marked L N E).

(8)

Carefully remove the power supply from the transceiver.

Refitting

To refit the Power Supply:

(1)

With the transceiver on its side hold the power supply near to its securing position in the top half
of the radio.

(2)

Slide back the terminal block cover and connect the ac wires to the three connector terminal
block (marked L N E); brown to terminal L, blue to terminal N and yellow/green to terminal E.

(3)

Connect the dc wires to the eight connector terminal block; red to terminal 2 and terminal 3 and
black to terminal 6 and terminal 7.

(4)

Connect CN4.

(5)

Taking care not to damage the plastic supply guard, lower the power supply into position and
secure from the bottom half of the unit using the four countersunk screws.

(6)

Re-establish the ac and/or dc dc supplies

.

(7)

Switch power on at the radio using the rear mounted Power switch.

(8)

Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit.

(9)

Carry out a BIT interruptive test as detailed in the procedure

To Initiate a BIT Test on page 5

.

WARNING

Dangerous Voltages

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Содержание T6TR

Страница 1: ...T6TR VHF 50 W Transceiver User Documentation ...

Страница 2: ...elephone From UK 01778 345434 From outside UK 44 1778 345434 Fax From UK 01778 342877 From outside UK 44 1778 342877 www parkairsystems com Errata Any errors found in this handbook are promulgated through the Park Air FTP network Any user can access this information by logging on to ftp parkairsystems com When logged on select the public Pub folder then the Handbook Errata Sheets folder and then s...

Страница 3: ...ered trademark of International Business Machines Microsoft This is a registered trademark of Microsoft Corporation in the USA and other countries Windows This is a registered trademark of Microsoft Corporation in the USA and other countries Indicates electrical danger to personnel WARNING Indicates a hazardous material WARNING Indicates a non ionizing radiation hazard WARNING Indicates a specifie...

Страница 4: ...iate frequency kg kilogramme kHz kilohertz LCD liquid crystal display m metre mA milliamp MARC multi access remote control mm millimetre mW milliwatt MHz megahertz MSK minimum shift keying PA power amplifier PC personal computer PCB printed circuit board pk pk peak to peak ppm parts per million PSU power supply unit PTT press to transmit RF radio frequency ROM read only memory RSE2 remote site equ...

Страница 5: ...nts of Directives 1999 5 EC 89 336EEC as amended by Directive 93 68 EEC and 72 23 EEC FCC Statement This device complies with Part 15 of the FCC rules Operation is subject to the condition that this device does not cause harmful interference Changes or modifications to this equipment not expressly approved by Park Air Systems Ltd could void your authority to operate this radio under FCC regulation...

Страница 6: ...sceiver About This Hard Copy This document apart from the preface is a hard copy of the files contained on the CD and comprises the following parts Preface not on CD Introduction Specification Operation Installation Maintenance ...

Страница 7: ...Back to Transceiver Main Page Introduction This topic gives a brief introduction to the T6TR VHF 50 W Multimode Transceiver ...

Страница 8: ...ptional Mode 3 optional Fig 1 T6TR VHF 50 W Transceiver Models and Part Numbers The following table identifies the T6TR VHF 50 W transceivers Mechanical Installation The transceiver fits into an industrial standard 19 inch 483 mm equipment cabinet and occupies 2U of space Additionally a transceiver can be mounted free standing for this purpose a desk mount kit is available as an accessory Descript...

Страница 9: ...ng the Park Air Virtual Front Panel VFP software in conjunction with a Personal Computer PC Virtual Front Panel The Virtual Front Panel VFP software supplied on CD with the radio is compatible with any PC or laptop running Windows 2000 or Windows XP The VFP allows changes to a radio s settings and channel information it displays the current BIT state displays BIT history allows security locks to b...

Страница 10: ...Back to Transceiver Main Page Intentionally Blank ...

Страница 11: ...ation This topic gives the specification applicable to the T6TR VHF 50 W Multimode Transceiver operating in AM modes Mode 2 and Mode 3 All radios operate in AM Voice mode Additional software must be loaded to allow AM MSK Mode 2 and Mode 3 ...

Страница 12: ...tic backup for the ac mains ac input supply The transceiver operates from a 48 to 62 Hz single phase ac supply and automatically adjusts to operate from any supply voltage ranging from 110 Vac to 230 Vac 10 The power consumption figures are given in Table 2 dc input supply The transceiver operates from a dc input supply between 21 6 and 32 V measured at the radio s input Current loading is given i...

Страница 13: ...ing any damage Humidity The transceiver operates to specification at a relative humidity between 5 and 90 non condensing Altitude The radios operate to specification up to 15 000 feet Additionally the equipment is capable of storage at altitudes up to 50 000 feet without damage Shock and vibration The radios comply with shock and vibration protection MIL STD 810E method 516 4 procedure VI Bench Ha...

Страница 14: ...ly by up to 3 dB Variations in power remain within 1 dB into a VSWR of up to 2 5 1 At VSWRs greater than this the output power may be reduced by 10 dB 1 dB High RF PA temperature If the RF PA temperature sensor exceeds 80 C the output power is reduced by 3 dB 1 dB If the RF PA temperature sensor exceeds 90 C the transceiver is de keyed and automatically re keyed at 70 C Rise time The power rise ti...

Страница 15: ...e Side Band DSB Amplitude Modulation AM full carrier emission designator 13K0A2DJN Modulation Depth All variants The transmitter modulation can be set to a maximum of 95 This eliminates any interference in adjacent channels at 25 kHz or 8 33 kHz channel spacing Hum and Noise All variants The hum and noise is more than 45 dB below the signal level for line input levels 13 dBm and more than 50 dB be...

Страница 16: ...nal range of 30 dB The VOGAD can be disabled AM MSK The VOGAD is disabled Mute AM Voice The mute level is set at 15 dB below the average speech line level setting The mute can be disabled AM MSK The mute is permanently disabled Differential Group Delay AM MSK only There is a 60 µs of differential group delay for signals in the range 1200 to 2400 Hz Transmit Control Transmit control characteristics...

Страница 17: ...ttenuated by more than 80 dB 8 33 kHz channel spacing At 3 5 kHz from the centre frequency the signal is attenuated by less than 6 dB At 8 33 kHz from the centre frequency the signal is attenuated by more than 70 dB 60 dB using the ETSI test method At 25 kHz from the centre frequency the signal is attenuated by more than 80 dB Unwanted Signal Suppression Intermod signal suppression The intermodula...

Страница 18: ...na socket is less than 81 dBm typically less than 100 dBm within the frequency range 9 kHz to 4 GHz Maximum RF input All variants The transceiver can withstand an RF input of 36 dBm for 20 seconds and a continuous 27 dBm input without causing damage Receive Modulation Characteristics The receive modulation characteristics are as follows Mode AM Voice The AM Voice mode uses Double Side Band DSB Amp...

Страница 19: ...s The audio output level is maintained at the equivalent of 90 modulation Audio AGC can be disabled AM MSK The audio AGC is permanently disabled Squelch The receiver has a noise compensated carrier operated squelch It has a carrier adjustment range of 114 to 60 dBm without the RF pre attenuator selected these levels are increased by the value of the RF pre attenuator when it is selected and provid...

Страница 20: ...ised cosine filter with α 0 6 nominal value emission designator 14K0G1DE Information is differentially encoded with 3 bits per symbol transmitted as changes in phase rather than absolute phase The data stream is divided into groups of 3 consecutive data bits least significant bit first Zeros are padded to the end of transmissions if needed for the final channel symbol Modulation Rate The symbol ra...

Страница 21: ...aving a total level of 33 dBm One or more VHF FM broadcast signals having a total level of 5 dBm Co channel rejection better than 20 dB Synchronisation For received signals greater than 103 dBm the probability of synchronisation is greater than 0 999 The probability of false synchronisation is 3x10 3 Receive Modulation Characteristics Mode 2 uses Carrier Sense Multiple Access CSMA differentially e...

Страница 22: ...ed with 3 bits per symbol transmitted as changes in phase rather than absolute phase The data stream is divided into groups of 3 consecutive data bits least significant bit first Zeros are padded to the end of transmissions if needed for the final channel symbol Modulation Rate The symbol rate is 10 500 symbols second 0 005 resulting in a nominal bit rate of 31 500 bits s RMS Phase Error The RMS p...

Страница 23: ... One or more VHF FM broadcast signals having a total level of 5 dBm Co channel rejection better than 20 dB Synchronisation For received signals greater than 103 dBm the probability of synchronisation is greater than 0 999 The probability of false synchronisation is 3x10 3 Receive Modulation Characteristics Mode Mode 3 uses Time Division Multiple Access TDMA differentially encoded 8 phase shift key...

Страница 24: ...Back to Transceiver Main Page Intentionally Blank ...

Страница 25: ...Back to Transceiver Main Page Operation This topic describes the transceiver s operating controls and indicators It also details how to set up the transceiver s operating parameters ...

Страница 26: ...ndicator An amber indicator that lights when a signal is received that is above the squelch threshold Additionally this indicator is lit when the transceiver s squelch facility is switched off squelch defeated This indicator also lights when the transceiver is keyed Alarm Indicator A red indicator that either flashes or lights when a BIT fault has been detected BIT indications are classified as ei...

Страница 27: ...e instructions for checking and adjusting the reference frequency are given in the Maintenance section Headset Microphone Diagnostics Connector A dual purpose connector that allows either a headset microphone or a PC to be connected to the transceiver The connector is a 7 pin self locking DIN socket the pin out is shown in Table 1 A microphone is fitted to this connector to enable the transceiver ...

Страница 28: ...ent in the transceiver s internal power supply circuitry To ensure safe working the transceiver must be isolated from the ac and dc input supplies Table 2 Headset Microphone Diagnostics Connector PC Connections Pin Number Signal Input or Output Description 2 Transmit data Output RS232 115200 baud 8 data bits 1 stop bit no parity no handshaking 4 Receive data Input RS232 115200 baud 8 data bits 1 s...

Страница 29: ...ed as per the installation procedures given in the Installation section Normal Operation During normal operation the LCD displays the Main screen This screen shows the operating frequency the channel number if the channel store facility is used the carrier offset if used and displays a graphical representation of output power when the transceiver is keyed If the transceiver has been set to Standby...

Страница 30: ... switch is not operated for 30 seconds the display returns to the Main screen If editing any parameter has not been completed the transceiver stays on the original setting Indicates more fields are available other than those currently displayed To access those fields turn the switch clockwise through the last displayed field Indicates more fields are available other than those currently displayed ...

Страница 31: ...for certain hardwire connections Backlight Adjust the display s backlight AM Voice Settings Procedure on page 19 AM MSK Mode Settings Procedure on page 22 Mode 2 Settings Screen on page 25 and Mode 3 Settings Screen on page 25 Mode and Mode Settings Select Mode Menu Lock Screen Main Screen Example Displayed during normal transceiver operation Frequency Set the transceiver s operating frequency Cha...

Страница 32: ... OK then press the switch You are returned to the Main screen or Wait for the 30 second timeout to expire You are returned to the Main screen Control Screen The Control screen is entered from the Main screen by pressing the switch The following screen is displayed S E C U R I T Y M E S S A G E F r o n t P a n e l L o c k e d O K F r e q u e n c y C h a n n e l S e t t i n g s E x i t B I T S W C o...

Страница 33: ...iver s frequency range The display conforms to ICAO convention for 8 33 kHz operation Table 3 25 kHz and 8 33 kHz Channel Spacing Displays Actual Frequency to 4 decimal places Channel Spacing Displayed Frequency at Transceiver s Front Panel 118 0000 MHz 118 0000 MHz 118 0083 MHz 118 0166 MHz 118 0250 MHz 118 0250 MHz 118 0333 MHz 118 0416 MHz 118 0500 MHz 118 0500 MHz 118 0583 MHz 118 0666 MHz 118...

Страница 34: ... 13 dB This corresponds to the level specified for the lines When testing the transceiver using a signal generator with sine wave modulation the line output level will be 10 dB above the line level setting Table 5 shows the relationship between line level output levels with average speech and sine wave assuming that the audio AGC is set to on and the modulation depth is between 30 and 100 Table 4 ...

Страница 35: ...ails using the Frequency screen F r e q 1 1 8 0 0 0 M H z C a n c e l O K 1 From the Control screen select frequency to display the Frequency screen 2 Turn the switch to highlight the digit to be changed then press the switch 3 Turn the switch until the required digit is shown then press the switch 4 Repeat until the required frequency is shown then highlight OK and press the switch 5 Only frequen...

Страница 36: ...ch 3 Highlight the kHz frequency value see Example 3 press the switch and then turn it until the required kHz value is shown Press the switch 4 Highlight Store and press the switch The new frequency is now stored in the selected channel number To recall a Stored Frequency Channel 1 From the Control screen select Channel to display the Channel screen 2 To make the transceiver operate on any preset ...

Страница 37: ...approximately two seconds the Testing screen is displayed 4 On completion and if the interruptive test was initiated from the front panel one of the following screens will be shown B I T I n i t i a t e E T I 0 0 0 0 0 0 0 h r s A C S u p p l y O N E x i t T e s t i n g P l e a s e W a i t During an interruptive BIT test the transceiver radiates modulated carrier waves at the set power Users shoul...

Страница 38: ...n Page 5 Selecting OK takes the user back to the BIT screen 6 Selecting OK takes the user back to the BIT screen The user can then scroll through the screen to check out transceiver parameters for failure T e s t S t a t u s P A S S O K T e s t S t a t u s F A I L O K ...

Страница 39: ...er into standby mode use the following procedure When the transceiver is in Standby mode the red front panel Standby indicator is lit To Enter Standby Mode To Exit Standby Mode E n t e r S t a n d b y Y e s N o 1 From the Control screen select Standby 2 At the Standby screen select Yes 3 Check that the display blanks and the front panel Standby indicator is lit E x i t S t a n d b y Y e s N o 1 Pr...

Страница 40: ...ser is taken to other screens General and mode specific settings showing default values are referenced in Table 6 on page 17 Click on any required parameter by page number for further references M o d e A M V o i c e M o d e S e t t i n g s P o l a r i t i e s E x i t B a n d E d g e s R e f F r e q 5 0 0 B a c k l i g h t 0 3 0 s E x i t B a c k E x i t Select between AM Voice AM MSK Mode 2 or Mo...

Страница 41: ...age 23 Audio line out level AM Voice AM MSK 30 to 10 dBm 13 dBm page 20 and page 23 Inhibit AM Voice AM MSK On or Off Off page 20 and page 23 PTT key AM Voice AM MSK On key Off de key Off page 20 and page 23 Tx time out AM Voice AM MSK 2 to 510 s or Off 180 s page 20 and page 23 Modulation depth AM Voice AM MSK 5 to 95 85 page 20 and page 23 Mute AM Voice On or Off On page 20 VOGAD AM Voice On or ...

Страница 42: ...M MSK Local Remote or Remote Local Local Remote page 21 and page 23 Local PTT AM Voice AM MSK Enabled or Disabled Enabled page 21 and page 23 Remote PTT AM Voice AM MSK Enabled or Disabled Enabled page 21 and page 23 Remote phantom PTT AM Voice AM MSK Enabled or Disabled Enabled page 21 and page 23 Self receive AM Voice On or Off Off page 21 Table 6 Operational Settings from the Front Panel Contin...

Страница 43: ...mitter time out Modulation depth Mute on or off VOGAD on or off Antenna c o delay on or off Offset Squelch See Squelch Setting Options on page 24 RF pre attenuation on or off Squelch defeat on or off Squelch noise compensation on or off Squelch carrier override on or off Audio AGC on or off Loudspeaker on or off Step 25 kHz or 8 33 kHz Mic Passive or Active Key priority local or remote Enable or d...

Страница 44: ... e O N V O G A D O N E x i t A n t C O D e l O N O f f s e t 0 0 k H z S q u e l c h 1 0 7 d B m E x i t R F P r e A t t e n O F F S q l D e f e a t O F F S q l N C o m p O N E x i t S q l C a r r O R O F F A u d i o A G C O N S p e a k e r O N E x i t Adjustments RF power between 5 W to 50 W Audio line in level between 30 to 10 dBm Audio line out level between 30 to 10 dBm On or Off On key Off de...

Страница 45: ...th Active or Passive Local remote or Remote local Enabled or Disabled Enabled or Disabled Enabled or Disabled On or Off S t e p 2 5 k H z M i c P A S S I V E K e y P r i o r i t y L R E x i t L o c a l P T T E N R e m o t e P T T E N R e m P h a n P T T E N E x i t S e l f R e c e i v e O F F B a c k E x i t ...

Страница 46: ...tput Audio line input level Audio line output level Inhibit PTT on key or off de key Transmitter time out Modulation depth Antenna c o delay on or off Squelch See Squelch Setting Options on page 24 RF pre attenuation Squelch defeat Squelch noise compensation Squelch carrier override Key priority local or remote Enable or disable local PTT Enable or disable remote PTT Enable or disable remote phant...

Страница 47: ... l c h 1 0 7 d B m E x i t R F P r e A t t e n O F F S q l D e f e a t O F F S q l N C o m p O N E x i t S q l C a r r O R O F F K e y P r i o r i t y L R L o c a l P T T E N E x i t R e m o t e P T T E N R e m P h a n P T T E N B a c k E x i t Adjustments RF power between 5 W to 50 W Audio line in level between 30 to 10 dBm Audio line out level between 30 to 10 dBm On or Off On key off de key 2 t...

Страница 48: ... and also mute signals stronger than the threshold that are excessively noisy Sql Carr O R The carrier override squelch facility is used in conjunction with the noise compensated squelch facility If too many noisy signals are being lost due to noise compensation carrier override can be switched on to reduce the squelch threshold by 10 dB The default threshold of 107 dBm effectively becomes 97 dBm ...

Страница 49: ...creen Pressing OK returns the user to the Main screen Mode 3 Settings Screen This is an advisory screen Pressing OK returns the user to the Main screen M o d e 2 p a r a m e t e r s a r e s e t v i a t h e H L D C i n t e r f a c e O K M o d e 3 p a r a m e t e r s a r e s e t v i a t h e T 1 E 1 i n t e r f a c e O K ...

Страница 50: ... settings applicable to AM Voice and AM MSK can be set to the default STD standard setting or INV inverted The signal connections are shown in Table 8 along with the conditions when STD or INV is selected The settings for the PTT Reference voltage are also shown in Table 8 R e a d y O u t S T D E B I T I n S T D I n h i b i t I n S T D E x i t B I T S t a r t I n S T D P T T R e f 1 4 V P T T I n ...

Страница 51: ... at least 1 mA to operate Phantom PTT In Phan PTT In MARC Audio pin 4 Active when input differs from reference by more than 10 V Inactive when input differs from reference by less than 1 V Maximum input level 60 V with respect to reference Input will draw no more than 6 mA requires at least 1 mA to operate Active when input differs from reference by less than 1 V Inactive when input differs from r...

Страница 52: ...its are defeated aircraft calling Squelch defeat in Sql Def In Facilities pin 7 TTL input 0 V switches off the squelch circuits TTL input 5 V switches off the squelch circuits PTT Ref PTT Ref can be set to 14 V 0 V or 14 V PTT Maximum input level 60 V with respect to PTT reference Input will draw no more than 6 mA and requires at least 1 mA to operate When the input PTT signal and the PTT referenc...

Страница 53: ...tput when the radio is ready to transmit and no BIT faults are detected E BIT In Facilities pin 2 TTL input 0 V indicates an external fault TTL input 5 V indicates an external fault ExternalVSWR Input Facilities pin 4 TTL input 0 V active TTL input 5 V active R e a d y O u t S T D E B I T I n S T D E x t V S W R I n S T D E x i t B a c k E x i t Each of the three polarity settings applicable to Mo...

Страница 54: ...P A S S P A O u t p u t P A S S P A L o o p P A S S E x i t M o d D e p t h P A S S V S W R P A S S L o o p E r r o r P A S S E x i t T X R F F i l t P A S S R X R F F i l t P A S S S e n s i t i v i t y P A S S E x i t Select to initiate BIT test Shows elapsed time 0 00 to 99999 59 Hrs Min Shows state of ac supply On or Off PA temperature range 20 C to 150 C Pass or Fail Pass Fail or Not Connecte...

Страница 55: ... A S S S t a r t U p P A S S C a l i b r a t i o n P A S S E x i t U n k e y e d P w r P A S S E B I T P A S S M A R C A C T I V E E x i t H D L C I N A C T I V E T 1 E 1 I N A C T I V E B a c k E x i t Pass Fail or Not Tested Pass Fail or Not Tested Pass or Fail Pass or Fail Pass or Fail Pass or Fail Pass or Fail Pass or Fail Pass or Fail Pass or Fail Pass or Fail Active or Inactive Active or Ina...

Страница 56: ...o o p E r r o r P A S S E x i t D S P 1 P A S S D S P 2 P A S S X i l i n x 1 P A S S E x i t X i l i n x 2 P A S S E E P R O M P A S S S t a r t U p P A S S E x i t C a l i b r a t i o n P A S S E B I T P A S S M A R C A C T I V E E x i t Shows elapsed time 0 00 to 99999 59 Hrs Min Shows state of ac supply On or Off On or Off Shows value of dc supply Pass or Fail Indicates the PA temperature Pass...

Страница 57: ...T6TR VHF 50 W Transceiver Page 33 Operation Back to Transceiver Main Page H D L C A C T I V E T 1 E 1 A C T I V E B a c k E x i t Active or Inactive Active or Inactive Active or Inactive ...

Страница 58: ... r e 6 5 x x x x x x x x v v D e s c r i p t i o n E x i t F i l l 2 S o f t w a r e 6 5 x x x x x x x x v v D e s c r i p t i o n E x i t Second line variation for WB radios reads 112 to 155 975 MHz 65 xxxxxxxx represents the software part number and v v represents its version 65 xxxxxxxx represents the software part number and v v represents its version Current mode running 65 xxxxxxxx represent...

Страница 59: ... f t w a r e 6 5 x x x x x x x x v v D e s c r i p t i o n F i l l 4 S o f t w a r e 6 5 x x x x x x x x v v D e s c r i p t i o n 65 xxxxxxxx represents the software part number and v v represents its version 65 xxxxxxxx represents the software part number and v v represents its version ...

Страница 60: ...6 975 B6550 WB set so that the full frequency range can be received 112 000 155 975 112 000 155 975 Example Transceiver set to transmit and receive only those frequencies in the range 120 to 130 MHz 120 000 130 000 120 000 130 000 Example Transceiver set to transmit and receive only those frequencies in the ranges 120 to 125 MHz and 130 to 135 MHz 120 000 125 000 130 000 135 000 B E 1 1 1 8 0 0 0 ...

Страница 61: ...tiple screens are used to display the status alternating with the Main Screen A L E R T S u p p l y 2 1 V A L E R T R F P o w e r R e d u c e d L o o p E r r o r S u p p l y 2 1 V A L E R T R F P o w e r R e d u c e d P A T e m p 8 5 d e g C A L A R M S y n t h L o c k F a i l A L A R M R F P o w e r R e m o v e d L o o p E r r o r F A I L S u p p l y 1 8 V Alarm indicator flashing No RF power red...

Страница 62: ...tion mode AM Voice Radio Settings AM Modes Set RF output power 50 W Set audio input line level 13 dBm Set audio output line level 13 dBm Set inhibit on or off Off PTT test facility on key off de key View only Off Set Tx time out 180 s Set modulation depth 85 Set mute on or off AM Voice only On Set VOGAD on or off AM Voice only On Set antenna C O delay on or off AM Voice On AM MSK Off Set frequency...

Страница 63: ... passive AM Voice only Passive Set keying priority local or remote Local Remote Enable or disable local PTT Enabled Enable or disable remote PTT Enabled Enable or disable remote phantom PTT Enabled Self receive transmit audio on line output Off Radio Settings Digital Modes MAC TM1 inter access delay 2 5 ms MAC TM2 channel busy 60 s MAC p persistence 13 256 MAC M1 maximum number of access attempts ...

Страница 64: ...ity AM modes only View state STD Set fast PTT antenna change over output polarity AM modes only View state STD Set external VSWR input polarity All modes View state STD Set inhibit input polarity AM modes only View state STD BIT interruptive test input polarity AM modes only View state STD active low E bit input polarity All modes View state STD active low Squelch output polarity at the MARC conne...

Страница 65: ...and 155 975 MHz Reference Frequency Adjust transceiver s reference frequency LCD Backlight Adjust LCD backlight 30 s BIT Initiate BIT interruptive test STANDBY Enter and exit standby facility Not in Standby SOFTWARE CONFIGURATION View the transceiver s software configuration LOCK FACILITIES Front panel lock Off MARC lock Off T1 E1 lock Off HDLC lock Off Table 11 Functions and Parameters Continued ...

Страница 66: ...Back to Transceiver Main Page Intentionally Blank ...

Страница 67: ...Back to Transceiver Main Page Installation This topic gives the information required to install a T6TR VHF 50 W Multimode Transceiver ...

Страница 68: ...a modulation index of 90 Based on this formula for a 50 watt transmitter and using a 0 dBi antenna the predicted safe distance from the centre of radiation would be approximately 0 75 m for a field strength of 10 W m2 1 mW cm2 This meets the requirements of Health Canada Safety Code 6 for RF and microwave exposed workers For persons not classed as RF and microwave workers and including the general...

Страница 69: ...n page 2 2 Perform an initial inspection of the transceiver and fit the correct ac input fuse see page 13 3 Setting the required antenna configuration see page 14 3 Fit the transceiver into an equipment cabinet if required see page 16 4 Make external signal connections See Fig 1 to Fig 7 to determine which external connections are required for the particular configuration see page 17 5 Connect the...

Страница 70: ...02S 29E01120108S DC input fuse 15A size 0 29 01350201 Connectors AC supply connector IEC 20 02030102 DC supply connector XLR3 socket 20 01030106 Antenna connector N type plug 19 01030301 MARC connector 9 way D type plug Plug 20 01090100 Cover 20 09090101 MARC audio RJ48 plug 20K01080100 MARC data RJ48 plug 20K01080100 Facilities connector 15 way D type plug Plug 20 01150100 Cover 20 09150101 HDLC ...

Страница 71: ...for use with an E1 radio interconnect E1 RIC See Fig 5 T6TR Mode 2 configuration see Fig 6 T6TR Mode 3 configuration see Fig 7 Fig 1 T6TR Transceiver Configured for Local Operation TX RX Antenna Connector Reference Connector Headset Microphone Diagnostics Connector Frequency Counter required only for maintenance Facilities Connector Mic Headset for local operation Laptop or PC required only for ma...

Страница 72: ...intenance MARC Connector Mic Headset for engineering use Laptop or PC required only for maintenance T6T Transceiver Rx Audio RS 422 Data Squelch Unregulated supply Note The unregulated supply and RS422 data connections may be used when connecting to remote controllers such as the Park Air T6 controller MARC Audio Connector Tx Audio PTT RX Antenna Connector Either a common Tx Rx antenna or separate...

Страница 73: ...equency Counter required only for maintenance MARC Connector Mic Headset for engineering use Laptop or PC required only for maintenance T6TR Transceiver Equipment Connector 1 Rx Audio Squelch RS422 data Unregulated supply RSE2 MARC Audio Connector Equipment Connector 3 Tx Audio PTT RX Antenna Connector Shows single channel connections at RSE2 Either a common Tx Rx antenna or separate Tx and Rx ant...

Страница 74: ... Audio Connector T6TR Transceiver MARC Connector MARC Audio Connector T6TR Transceiver MARC Connector MARC Audio Connector T6TR Transceiver MARC Connector MARC Audio Connector RSE2 Equipment Connector 1 Equipment Connector 3 Equipment Connector 2 Equipment Connector 4 Equipment Connector 5 Equipment Connector 7 Equipment Connector 6 Equipment Connector 8 Receive lines data Transmit lines Receive l...

Страница 75: ...io line L1 2 3 Audio line out Audio line L2 3 4 Squelch indication Mute indication 4 5 Unregulated supply output Unregulated supply input 5 6 Data in Data out 6 7 Data in Data out 7 8 Data out Data in 8 9 Data out Data in 9 Table 4 Transceiver to RSE2 Equipment Connector 3 4 7 or 8 Transceiver MARC RJ48 Audio Connector Pin Number Signal at Transceiver Signal at RSE2 RSE2 Equipment Connector Pin Nu...

Страница 76: ...ernal VSWR input Unregulated supply output Inhibit input BIT interruptive test input Antenna change over output Ready output Tape output Facilities Connector Frequency Counter required only for maintenance Mic Headset for engineering use Laptop or PC required only for maintenance Optional Facilities that can be used if required E1 data audio signalling and MARC data 28 Vdc TX RX Antenna Connector ...

Страница 77: ...nnector T1 E1 Connector Facilities Connector Reference Connector Headset Microphone Diagnostics Connector Mode 2 Network Computer Connects to the Headset Diagnostics connector Frequency Counter required only for maintenance Connects to the Reference connector Control and data RX Antenna Connector Either a common Tx Rx antenna or separate Tx and Rx antennas can be used ...

Страница 78: ...ansceiver T1 E1 Connector Reference Connector Mic Headset Diagnostics Connector Mode 3 Network Computer Control and data Frequency Counter required only for maintenance Laptop or PC required only for maintenance TX RX Antenna Connector RX Antenna Connector Either a common Tx Rx antenna or separate Tx and Rx antennas can be used ...

Страница 79: ... User Documentation CD part number 31 36T62VCD is normally supplied with the transmitter This CD includes the VFP software Fitting the Correct AC Input Fuse The mains input fuse F2 is an integral part of the rear panel ac connector The fuse type must be correct for the local mains supply as detailed below FS2 Spare Fuse Line Neutral Earth For a mains input in the range 110 to 120 Vac fuse F2 shoul...

Страница 80: ...supplies are connected to the transceiver 2 Remove the 15 screws securing the transceiver s bottom cover 3 With the cover removed locate the PA Control Rx RF module 4 Locate CN7 and CN12 on the PA Control Rx RF module see Fig 9 5 For single antenna configuration connect the Rx antenna RF cable to CN12 Park Connect the adjacent RF cable from the PA module to CN7 6 For two antenna configuration conn...

Страница 81: ...T6TR VHF 50 W Transceiver Page 15 Installation Back to Transceiver Main Page Fig 9 Location of CN7 and CN12 CN7 CN12 RX Antenna PARK ...

Страница 82: ...elescopic slides or on fixed runners within a standard 483 mm 19 inch equipment rack M4 tapped holes each 10 mm deep see Fig 10 are provided on each side of the equipment to accept the slides Details of suitable telescopic slides and fixed runners are available from Park Air When fitted in the rack the transceiver s front panel must be secured to the cabinet s chassis using four M6 x 16 mm screws ...

Страница 83: ...involves configuring the transmitter to suit its operational mode Illustrations showing various configurations are shown in Fig 1 to Fig 7 these figures should be used only as a guide Front Panel Connectors The front panel has two connectors Headset Microphone Diagnostics connector and Reference connector These are shown in Fig 11 Fig 11 Front Panel ...

Страница 84: ... Signal Characteristic Usage 1 Microphone ground 0 V Microphone headset 2 Transmit data RS232 115200 baud 8 data bits 1 stop bit no parity no handshaking PC 3 Microphone PTT 0 V to PTT Microphone headset 4 Receive data RS232 115200 baud 8 data bits 1 stop bit no parity no handshaking PC 5 Sidetone headset drive The level is adjustable between 0 and 3 V peak to peak by using the volume control Micr...

Страница 85: ...RC audio RJ48 Used as an alternative to the MARC connector for terminating remote audio and PTT signals MARC data RJ48 Used as an alternative to the MARC connector for terminating data signals to and from a compatible data system Facilities 15 way D type Provides a number of optional facilities that can be used as required T1 E1 RJ48 Used for connecting the radio to a Mode 3 network computer conne...

Страница 86: ...ration topic Table 7 MARC Connector Pin Number Signal Characteristic 1 Ground 0 V 2 3 Audio line out Audio line out Balanced 600 ohm 30 to 10 dBm Phantom squelch see Fig 14 solid state relay 60 to 60 V ac or dc 100 mA max configurable n o or n c Contact closure time is less than 20 ms Pair to pin 2 4 Squelch output Solid state relay 60 to 60 V ac or dc 100 mA max configurable n o or n c Contact cl...

Страница 87: ...see Fig 13 active when input differs from reference by more than 10 V Inactive when input differs from reference by less than 1 V Maximum input level 60 V with respect to reference Input will draw no more than 6 mA requires at least 1 mA to operate Configurable active high or low Common reference to all inputs programmable to 14 0 or 14 V 1 V 6 Squelch output Solid state relay 60 to 60 V ac or dc ...

Страница 88: ...om reference by less than 1 V With INV selected PTT active when input differs from reference by less than 1 V PTT inactive when input differs from reference by more than 10 V For example to use 0 volt as the keying potential with STD polarity set the reference to 14 V or 14 V PTT Maximum signal level 60 V with respect to transmitter reference Internal Sensing Circuit T6TR Transceiver The pull up v...

Страница 89: ...ential asynchronous data 9600 baud 8 data bits 1 stop bit no parity no handshaking 3 Not connected 4 5 Data out Data out RS422 differential asynchronous data 9600 baud 8 data bits 1 stop bit no parity no handshaking 6 Remote Supply ON OFF input 0 V to switch off Note Rear panel switch must be in ON position for this function to operate 7 Ground 0 V 8 Unregulated supply output This output is betwee...

Страница 90: ... and 1 25 A fuse in each line 2 RTip 3 Not connected 4 TRing T1 Balanced 100 ohm 10 1 544 Mbits per second 50 ppm AMI B8ZS Coding E1 Balanced 120 ohm 10 2 048 Mbits per second 50 ppm AMI HDB3 Coding Protected with 28 V differential and common mode clamp and 1 25 A fuse in each line 5 TTip 6 Remote on off An input that is primarily used by a Park Air E1 RIC equipment to switch the radio on and off ...

Страница 91: ...nous data 128 kbytes per second 50 ppm 2 HDLC RX B input 3 HDLC CL A output RS422 differential synchronous data 128 kbytes per second 50 ppm 4 HDLC TX B output RS422 differential synchronous data 128 kbytes per second 50 ppm 5 HDLC TX A output 6 HDLC CL B output RS422 differential synchronous data 128 kbytes per second 50 ppm 7 Ground 0 V 8 Unregulated Supply output 21 6 to 32 V fused at 500 mA Pi...

Страница 92: ...o jack used for connecting to an external speaker to provide sidetone on the transceiver This speaker should be a high impedance active type Table 12 External Speaker Pin Signal Characteristic Tip Speaker Drive output 0 to 3 V pk pk Connected directly to Ring Ring Speaker Drive output 0 to 3 V pk pk Connected directly to Tip Sleeve Ground 0 V ...

Страница 93: ...time 4 External VSWR input TTL input with 4 7 kohm pull up to 5 V Configurable active high or low 5 Squelch output Solid state relay linked to pin 6 60 to 60 V ac or dc 100 mA max configurable n o or n c Contact closure time is less than 20 ms 6 Squelch common output Solid state relay linked to pin 5 7 Squelch defeat input TTL with 4 7 kohm pull up to 5 V Configurable active high or low 8 Ground 0...

Страница 94: ...antennas are to be used The antenna configuration must conform to the transceiver s internal coaxial link arrangement see Setting the Required Antenna Configuration on page 14 The antenna used with the transceiver must be installed such that the resultant radiated field strength is below 10 W m in areas normally accessible to personnel The RF field strength from the antenna can be predicted from t...

Страница 95: ...e ac supply fails On restoration of the ac supply the equipment reverts to ac operation A dc input supply connector see Fig 15 is fitted to the equipment s rear panel The recommended minimum rating of the dc supply cable is 2 core having a cross sectional area of 1 5 mm2 per core The supply cable should be fitted with an XLR3 connector Park Air part number 20 01030106 Fig 15 DC Connector Positive ...

Страница 96: ... and conform to the following specification If PVC insulated be not lighter than ordinary polyvinyl chloride sheathed flexible cord according to IEC publication 227 designation H05 VV F or H05 VVH2 F If rubber insulated be of synthetic rubber and not lighter than ordinary tough rubber sheathed flexible cord according to IEC publication 245 titled Rubber Insulated Cables of Rated Voltages up to and...

Страница 97: ...n is displayed when the radio is switched on The bottom row begins empty and dots are added as the initialisation progresses When the initialisation is complete the Main Screen is displayed Setting Up When installation has been successfully completed the transceiver must be set up using the front panel controls or the VFP Setting up is detailed in the Operation topic T 6 D i g i t a l R a d i o c ...

Страница 98: ...Back to Transceiver Main Page Intentionally Blank ...

Страница 99: ...Back to Transceiver Main Page Maintenance This topic gives scheduled maintenance procedures details module replacement and describes how to use the Virtual Front Panel VFP ...

Страница 100: ...re and Software Configuration Spare modules received from Park Air are supplied with a Spares Instruction that details the configuration of the module and any special instructions If in any doubt regarding the suitability of spare modules contact Park Air Customer Support Scheduled Maintenance A scheduled maintenance procedure is given on page 3 Park Air recommends that this task be completed ever...

Страница 101: ...uipment Required 1 Ensure the equipment is clean and that external connectors are securely fitted Camel hair brush clean lint free cloths 2 Check and reset if required the transceiver s internal frequency reference VHF frequency counter 3 Perform a BIT interruptive test 4 Perform an ac and dc change over check if both supplies are connected Control Screen Settings Screen F r e q u e n c y C h a n ...

Страница 102: ...eration section of this document and set the desired 5 carrier offset Refer to Changing the Transceiver s Operating Frequency in this document and set the transceiver to the nearest 25 kHz channel frequency For example if the required frequency is 124 504 4 kHz offset set the transceiver to 124 500 MHz Key the transceiver and adjust the reference frequency using the front panel Scroll Select switc...

Страница 103: ...ng OK takes the user back to the BIT screen 6 Selecting OK takes the user back to the BIT screen The user can then scroll through the screen to check out transceiver parameters for failure During an interruptive BIT test the transceiver radiates modulated carrier waves at the set power Users should therefore obtain the necessary authority before initiating a test If the test is to be carried out w...

Страница 104: ...ed to the transceiver Ensure that the rear panel Power switch is set to the I on position 2 Confirm that the front panel Ready indicator is lit the LCD is illuminated and the transceiver is operational 3 Switch off the ac supply from its source 4 Check that the transceiver continues to operate correctly from the dc supply If accessed the front panel BIT screen will show AC Supply as off and DC Sup...

Страница 105: ...is below 10 W m in areas normally accessible to personnel The T6TR transceiver s circuitry contains Electrostatic Sensitive Devices ESSDs Personnel must be aware of the precautions necessary to prevent damage to such devices Changes or modifications made to this equipment that are not expressly approved by Park Air or parties authorized by Park Air could void the user s authority to operate the eq...

Страница 106: ...ove KK type connectors Free the locking mechanism on the connector by moving one side of the connector up then move the other side up see the following diagram The upward motion should only be as far as needed to free the locking mechanism DO NOT pull the cable to free the connector Note that KK type connectors are designed to be removed in this manner to free the locking mechanism Do not use this...

Страница 107: ...cated as shown in Fig 8 A module removal diagram is shown in Fig 9 WARNING Dangerous Voltages Processor Module Compatibility During 2005 Park Air introduced the Mark 1 processor module The Mark 1 module provides a supply voltage through the T1 E1 connector to supply an E1 Radio Interconnect E1 RIC A Mark 0 module cannot replace a Mark 1 module when the radio connects to an E1 RIC The Mark number c...

Страница 108: ... exposed circuitry when the top cover is removed and power is applied to the radio 1 Remove the transceiver s top cover as described on page 9 2 Locate the Processor module and disconnect the following connectors CN1 50 way connector 50 way ribbon cable from PA Control Rx RF module CN3 14 way connector 14 way ribbon cable from PSU Regulator module CN4 34 way connector 34 way ribbon cable from Fron...

Страница 109: ...the seven M3 x 8 mm screws that secure the module to the receiver s mainframe 5 Refit the following connectors to the module CN1 50 way connector 50 way ribbon cable from PA Control Rx RF module CN3 14 way connector 14 way ribbon cable from PSU Regulator module CN4 34 way connector 34 way ribbon cable from Front Panel module CN2 SMB connector to PA Control Rx RF module 6 Re establish the ac and or...

Страница 110: ...am is shown in Fig 11 Removal Before attempting to remove the PSU Regulator module ensure that the transceiver is isolated from the ac and dc input supplies Then proceed as follows Dangerous voltages are present within the transceiver Care must be taken by personnel to avoid accidental contact with exposed circuitry when the top cover is removed and power is applied to the radio 1 Remove the trans...

Страница 111: ...emoved during the removal procedure 4 Re establish the ac and or dc supplies 5 Switch power on at the radio using the rear mounted Power switch 6 Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit 7 Carry out a BIT interruptive test as detailed in the procedure To Initiate a BIT Test on page 5 8 Set the rear panel Power switch to Standby Isolate the transceiver from the...

Страница 112: ...bottom cover 2 Locate the module and disconnect the following connectors before removing CN7 and CN12 note the antenna configuration CN1 50 way connector 50 way ribbon cable from Processor module CN6 10 way connector 10 way ribbon cable from PSU Regulator module CN5 SMB connector reference frequency CN3 SMB connector RF drive CN4 SMB connector forward power sense CN2 6 way connector to PA module C...

Страница 113: ...e CN3 SMB connector RF drive CN5 SMB connector reference frequency CN6 10 way connector 10 way ribbon cable from PSU Regulator module CN1 50 way connector 50 way ribbon cable from Processor module 4 Re establish the ac and or dc supplies 5 Switch power on at the radio using the rear mounted Power switch 6 Ensure the front panel Ready indicator is lit and the Alarm indicator is unlit 7 Carry out th...

Страница 114: ... Maintenance Back to Transceiver Main Page Fig 2 Antenna Configuration Antenna Configuration Connector CN12 PARK Connector CN7 Single Rx antenna CN13 from PA Module Dual CN13 from PA Module Rx antenna CN7 CN12 PARK RX Antenna Connector ...

Страница 115: ...y guard 5 Remove the connector CN4 power supply to the power regulator 6 Disconnect the dc wires from the eight connector terminal block 7 Slide back the terminal block cover and disconnect the ac wires from the three connector terminal block marked L N E 8 Carefully remove the power supply from the transceiver Refitting To refit the Power Supply 1 With the transceiver on its side hold the power s...

Страница 116: ... and breach European Commission regulations When screws are inserted into the transceiver PA casting care must be taken not to exceed a torque of 6 Ibs inch when tightening This applies when replacing the top and bottom covers and during the refitting of the PA module 1 Remove the transceiver s top and bottom covers as described on page 9 and page 13 2 Remove CN3 from the PSU Regulator module 3 Wi...

Страница 117: ...he black equipment handle to the PA side of the radio using the two M5 x 16 mm panhead screws previously removed 4 Connect the SMB connectors CN8 and CN10 Note that CN10 is located within the heatsink fins and should be connected using long nosed pliers if unable to use fingers in the enclosed space 5 With the transceiver upside down connect CN2 to the PA Control Rx RF module 6 Fit CN3 to the PSU ...

Страница 118: ...ward and away from the mainframe 6 At the front panel release the control knob by unscrewing the Allen head grub screw using a 1 5 mm Allen key Withdraw the control knob from the spindle 7 Disconnect the speaker connector from the Front Panel PCB 8 Remove the Front Panel PCB from the Front Panel assembly by removing the six M3 x 6 mm panhead screws and wavy washers see Fig 14 Diagram B Refitting T...

Страница 119: ...voltages are present within the transceiver Care must be taken by personnel to avoid accidental contact with exposed circuitry when the bottom cover is removed and power is applied to the radio 1 Disconnect the two pin connector 2 Remove the fan finger guard 3 Using an Allen key inserted through the holes in the fan exposed with the finger guard removed remove the three M4 x 12 mm caphead Allen sc...

Страница 120: ...re A profile of the transceiver s operation settings and channel information can be created stored on disk and then recalled to download into other transceivers A print out of the transceiver s profile can be made from the VFP Front Panel Lock is available only when using the VFP As part of the transceiver s Settings see typical screen display shown below Front Panel Lock can be set to ON When sel...

Страница 121: ...jected by the radio or a BIT failure Green indicates text that has not yet been downloaded to the radio Text loaded into the VFP from a previously stored file or any text that is manually amended is green until it is downloaded into the radio after being downloaded into the radio the text changes to black or if it is invalid to red Blue indicates Help text and is shown in the Status Information wi...

Страница 122: ... adjustment of the reference frequency should be performed using the radio s front panel controls as detailed on page 3 Channels Window Up to 100 preset channels can be stored in the radio These are listed in the Channels window Any channel frequency can be amended by clicking on the value to amend it and pressing Enter to confirm the new value Note that the amended channel is green until it is do...

Страница 123: ...nk VFP Screen 3 At the Menu Bar click on Serial Port and select Com 1 to Com 99 The selection must correspond to the port used to connect to the radio 4 Load the required information from the radio or from a stored file The required information can be radio settings frequency channels BIT information or all of these To load a previously stored file select File Open All or File Open Settings or Fil...

Страница 124: ...to the PC s Com Port note which Com Port is used 2 Run up the VFP software and check that a blank VFP screen is displayed 3 At the Menu Bar click on Serial Port and select Com 1 to Com 99 The selection must correspond to the port used to connect to the radio 4 At the Menu Bar select Radio Test 5 An interruptive BIT test now takes place The results are displayed in the BIT window 6 If there is no f...

Страница 125: ...ummy load must be connected before proceeding 8 With the Confirm screen displayed and dummy load connected select Yes to continue with the calibrate routine The Progress screen will then be displayed 9 When the PA Control PA loop has been calibrated the Progress screen disappears and the VFP screen re appears showing a calibration complete message in the Status Information window 10 Gain access to...

Страница 126: ...T6TR VHF 50 W Transceiver Page 28 Maintenance Back to Transceiver Main Page Fig 5 Location of RV9 RV9 Fine Power Adjust ...

Страница 127: ... MARC FACILITIES 21 6 32V 10A POWER 400VA max 110 240V 10 4A SEE INSTALLATION INSTRUCTIONS BEFORE CONNECTING SUPPLIES DISCONNECT SUPPLIES WHEN NOT IN USE DC SUPPLY AC SUPPLY 48 62Hz FUSE F1 F15A 32V 110V 120V T4A 125V UL 110 240V T4A 250V IEC RATINGS FUSE F2 DC SUPPLY FUSE F2 FUSE F1 SUPPLY AC SUPPLY Front View Rear View Fig 6 T6TR Front and Rear Panels ...

Страница 128: ...iveData RS232 CN2 5 5 Sidetone Headset Drive 3Vacpk pk 200R CN2 2 6 MicrophoneInput CN2 7 7 Ground 0V Diagnostics 0V PTT 5Vpull up not PTT 6k8input impedance 5mVsensitivity Front Panel Processor Connections Name Characteristic CN4 1 CN4 2 CN4 3 CN4 4 CN1 1 CN1 2 CN1 3 CN1 4 LEDAlarm LEDReady LEDStandby LEDTx LEDRx LCDRS Opencollector 5mA CN4 5 CN4 6 CN4 7 CN4 8 CN4 9 CN4 10 CN4 11 CN4 12 CN4 13 CN...

Страница 129: ...le Power Supply T6 Series 2 VHF Transceiver Module Location Diagram VHF TR PA Control RX RF Module VHF TR RF PA Processor Module Front Panel Module Module Transmit Antenna Connector Receive Antenna Connector Top view Top Cover removed View on underside Bottom Cover removed Fan ...

Страница 130: ...Back to Transceiver Main Page Fig 9 Processor Module Removal and Refitting Detail PA CN 8 ...

Страница 131: ...Back to Transceiver Main Page Fig 10 PSU Regulator Module Removal and Refitting Detail Blue N Brown L ...

Страница 132: ...Back to Transceiver Main Page Fig 11 PA Control Rx RF Module Removal and Refitting Detail ...

Страница 133: ...Back to Transceiver Main Page Fig 12 Power Supply Removal and Refitting Detail ...

Страница 134: ...Back to Transceiver Main Page Fig 13 PA Module Removal and Refitting Detail ...

Страница 135: ...Back to Transceiver Main Page Fig 14 Front Panel Assembly PCB Removal and Refitting Detail Diagram A Diagram B ...

Страница 136: ...Back to Transceiver Main Page Fig 15 Cooling Fan Removal and Refitting Detail ...

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