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T X 3 5 5 0 S

I N S T R U C T I O N M A N UA L

PA G E 3 7

ELECTRICAL

General

Compliant Specification: Meets AS/NZS 4365 for radio

communications equipment
in the UHF citizen and personal
radio service.

Frequency Range TX: 476.425-477.4125 MHz

Number of Channels: 80

Channel Spacing: 12.5 kHz

Operation Mode: Simplex or half Duplex

with repeater talk around.

Scanning Speed: 25 ms per channel

(40 channels per second).

Antenna Impedance: 50 Ohms nominal

Nominal Battery Voltage: 12 volts DC
Operating Voltage Range: 10-16 volts DC

Battery Polarity: Negative Earth

Standard Test Voltage: 13.8 volts DC

Over Voltage Protection: 30 volts DC maximum.

At 18 volts DC the channel
display flashes ‘Hi DC’ for 5
seconds on receive. The RF
power is reduced and TX flashes
on transmit.

Reverse Voltage Protection: Diode Crowbar

Overcurrent Protection: In-line 2 amp fuse

Operating Temperature: -10°C to 60°C

Transmitter

RF Output: 5 watts

Spurious Emission: < - 70 dBc

Frequency Error: < ± 1.5 kHz

Modulation: FM

Maximum Deviation: < ± 2.5 kHz at + 20 dB

AF limiting.

Transmit Frequency

Response: +6 dB per octave

300 Hz to 3 kHz + 1–3 dB.

Demodulated Audio

Signal to Noise: >45 dB unweighted

Current Consumption: 1.7 amps with 50 Ohms

termination.

Receiver

Intermediate Frequencies: 38.85 MHz, 450 kHz

Sensitivity: -122 dBm for 12 dB

SINAD unweighted

Selectivity: -6 dB at + 3.5 kHz

-60 dB at ± 12.5 kHz

Intermodulation

Immunity: -72 dB

Blocking Immunity: -98 dB

Spurious Response

Immunity: 70 dB

Audio Output Power: 3 watts average into 4 Ohms

Audio Signal to Noise: >45 dB unweighted

Receive Frequency

Response: -6 dB/Octave de-emphasis

300 Hz to 3 kHz + 1–3 dB.

Current Consumption: <175 mA muted

750 mA full volume.

Conducted Spurious

Emission: <70 dBm

MECHANICAL SPECIFICATIONS & CONNECTIONS

Dimensions: 29 (H) x 128 (L) x 117 (D) mm

Weight: 450 grams

12 Volt Power Supply: Two core cable with bulkhead

connector in rear panel.

Antenna: SO239 panel socket

External Speaker: 3.5 mm mono jack

Microphone Port: 8 way telephone style

with rubber strain relief.

SPECIFICATIONS

Specifications

are subject to change without notice or obligation

Содержание TX3550S

Страница 1: ...Compact fully featured 5 watt UHF CB radio with ergonomic speaker control mic ScanSuite faster smarter scanning I N S T R U C T I O N M A N U A L...

Страница 2: ...rambler 12 Beep tone volume 12 Disabling the internal speaker 12 Microphone gain 12 Silent Squelch TAIL 13 Repeaters and Duplex Mode 13 Priority Channel 14 Scanning 14 Scan Groups 15 Open scan 15 Grou...

Страница 3: ...S band Original 40 channel wideband Radios will continue to operate on the original 40 channels however they will not be able to converse on the newer channels 41 80 The newer narrowband radios will b...

Страница 4: ...ra simplex channels RECEIVE RX Silent Squelch Tail Eliminates the Squelch noise burst normally audible when the Squelch closes User Programmable Receive Channels 95 Signal Receive Indicator Confirms t...

Страница 5: ...tion circuitry protects the radio and warns of excessive voltage conditions by flashing the display Rugged Construction With Die cast Chassis USER CONTROLS AND INTERFACE Full Spectrum Backlighting Use...

Страница 6: ...PAGE 6 INSTRUCTION MANUAL TX3550S GENERAL OPERATION FRONT PANEL DC Power Socket Speaker Socket Antenna Socket Rear Microphone Socket REAR PANEL...

Страница 7: ...lay Transmit Busy SelCall RX Scan SelCall Alpha Display Signal Meter Battery Quiet CTCSS DCS SelCall TX Repeater Duplex LEVEL Channel Up Push To Talk PTT Skip Call Channel Down Menu F Key Power Key Mo...

Страница 8: ...F followed by OS GS to select Open Scan Group Scan or Network Scan Press and hold QUIET to tag the selected channel for use with SelCall Press QUIET briefly to toggle the quiet mode on all channels t...

Страница 9: ...quelch and be heard in the speaker Adjusting the Squelch level The Squelch sensitivity level has been factory set to provide optimum performance under most operating conditions If required the sensiti...

Страница 10: ...m deep colour to white no colour To adjust the backlighting 1 Hold the LEVEL key to select the Backlight mode BKLGT is displayed 2 Press or key to adjust the brightness 3 Briefly press the LEVEL key t...

Страница 11: ...lected NOTE The wideband receiver filter setting is only applied to channels 1 40 Channels 41 80 always use the narrowband filter DYNAMIC VOLUME CONTROL DVC The modulation level of signals heard on th...

Страница 12: ...e PTT to exit DISABLING THE INTERNAL SPEAKER The TX3550S has two speakers one mounted inside the radio and the other mounted inside the microphone By default sound is reproduced by both speakers howev...

Страница 13: ...repeater is designed to receive signals on a designated channel and retransmit them on another channel Repeaters are usually mounted on hills or tall buildings The increase elevation greatly improves...

Страница 14: ...channel Inadvertently transmitting on an active repeater input frequency in simplex mode could cause interference to other users on that repeater that would not be audible to your radio PRIORITY CHAN...

Страница 15: ...kip as many busy channels from the scan group as you wish however if you attempt to skip the last remaining channel all the previously skipped channels will be restored to the scan group OPEN SCAN Ope...

Страница 16: ...n urgent call briefly press PRI The scan will be cancelled and the radio will jump straight to the Priority channel GROUP SCAN Group Scan allows you to scan a number of channels for activity while als...

Страница 17: ...canning press SCAN again NETWORK SCAN NET SCAN Net Scan allows a group of radio users to maintain communications even when the band is congested To achieve this all members of the Net Scan group must...

Страница 18: ...member of the group initiates a transmission their radio will automatically select a clear channel to transmit on Other radios scanning in the same Net Scan group will locate the transmission by iden...

Страница 19: ...radio systems CTCSS Tone Set Compatibility The GME CTCSS tone set comprises a table of 50 tones made up of the standard CCIR 38 Tone Set plus an additional 12 tones added to the end If communicating w...

Страница 20: ...itting to ensure you do not accidentally transmit over the top of another user Alternatively you can enable Busy Lockout in the Configuration Menu which will automatically prevent your radio from tran...

Страница 21: ...display labels your radio must be in the ALPHA mode To switch between ALPHA mode and NUMERIC mode briefly press the F key followed by the ALPHA key ALPHA or NUMER will be displayed briefly to the left...

Страница 22: ...ss and hold the LEVEL key The entire Ident will flash for a few seconds then the radio will beep as the new Ident is stored e g Programming Call Memory C5 Recalling SelCall Idents 1 Briefly press CALL...

Страница 23: ...on the display along with the callers SelCall Ident or ALPHA label to inform you of the caller s identity Incoming call showing SelCall Ident Incoming call showing Alpha label RESPONDING TO A SELCALL...

Страница 24: ...he icon will be visible but no sound will be heard from the speaker If a normal signal is received on an Open channel one that is not tagged with Q the signal will be heard in the usual way If your Se...

Страница 25: ...ll you are sending match those of the radios you are calling their SelCall alarm will be activated as if their full 5 digit SelCall Idents had been received To achieve this the 10 radios you are calli...

Страница 26: ...o help identify that channel when it is selected Selecting Channel Banks Before programming or recalling channels you should select the required Channel Bank The 5 Channel Banks can be enabled through...

Страница 27: ...le switching the radio on again 3 RXALL will be displayed briefly indicating the RX Channel Editor has been activated You can now press the or key to select channels 81 99 for programming Selecting Fr...

Страница 28: ...ored under CH 90 6 Repeat steps 1 5 to program other channels NOTE The frequency tuning is live which means the radio is actually listening to the frequencies you are selecting You can use this featur...

Страница 29: ...1 Press the or keys to select the desired Receive only channel 2 If the channel s ALPHA label is displayed briefly press the F key followed by the ALPHA key to switch to Frequency numeric mode 3 Press...

Страница 30: ...Selected menu options are displayed to the left of the channel display Briefly press MENU to step through the available menu options Press or to change the selected menu option After viewing or makin...

Страница 31: ...if it is necessary to mount the unit in a less audible location an extension speaker can used The extension speaker plugs into the extension speaker socket on the radio s rear panel Console Mounting...

Страница 32: ...ct the radio s negative black lead to the vehicle s chassis or if preferred directly to the battery s negative terminal The radio s positive red lead should be connected via the 2 amp fuse to the batt...

Страница 33: ...for the specific frequency band you are using will give very poor performance GME have a wide range of suitable 477 MHz UHF CB antennas to suit most installations and applications We recommend contact...

Страница 34: ...8 41 165 5 3 74 4 16 114 8 29 179 9 42 171 3 4 77 0 17 118 8 30 186 2 43 177 3 5 79 7 18 123 0 31 192 8 44 183 5 6 82 5 19 127 3 32 203 5 45 189 9 7 85 4 20 131 8 33 210 7 46 196 6 8 88 5 21 136 5 34...

Страница 35: ...24 134 42 246 60 351 78 465 96 664 7 043 25 143 43 251 61 356 79 466 97 703 8 047 26 145 44 252 62 364 80 503 98 712 9 051 27 152 45 255 63 365 81 506 99 723 10 053 28 155 46 261 64 371 82 516 100 73...

Страница 36: ...31 477 175 51 476 6875 71 477 1875 12 476 700 32 477 200 52 476 7125 72 477 2125 13 476 725 33 477 225 53 476 7375 73 477 2375 14 476 750 34 477 250 54 476 7625 74 477 2625 15 476 775 35 477 275 55 47...

Страница 37: ...equency Error 1 5 kHz Modulation FM Maximum Deviation 2 5 kHz at 20 dB AF limiting Transmit Frequency Response 6 dB per octave 300 Hz to 3 kHz 1 3 dB Demodulated Audio Signal to Noise 45 dB unweighted...

Страница 38: ...e warranty period we warrant our repairs to be free from defects in materials and workmanship for three months from the date of the original repair We agree to re repair or replace at our option any m...

Страница 39: ...nformation call or visit us A division of Standard Communications Pty Ltd Head Office PO Box 96 Winston Hills NSW 2153 Australia New Zealand PO Box 58 446 Botany Auckland 2163 NZ T 09 274 0955 All oth...

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