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FT-252 O

peraTing

anual

CTCSS/DCS Operation

CTCSS Operation

Many repeater systems require that a very-low-frequency audio tone be superimposed

on your FM carrier in order to activate the repeater. This helps prevent false activation

of the repeater by radar or spurious signals from other transmitters. This tone system,

called “CTCSS” (Continuous Tone Coded Squelch System), is included in your

FT-252

and is very easy to activate.

1. Press the

[

SET/ATS

]

key to enter the Set mode.

2. Rotate the

DIAL

knob or press the

[

]/[

]

key to select

Set Mode Item 40:

SQL

.TYP.

3. Press the

[

SET/ATS

]

key momentarily to enable adjust

ment of this Item.

Rotate the

DIAL

knob or press the

[

]/[

]

key

so that

“

TONE

” indication appears on the display; this activates

the CTCSS Encoder, for access to repeaters requiring a

CTCSS tone.

5. Rotation of the

DIAL

knob one more “click” or

pressing

the

[

]/[

]

key one more “press” in step “4” above will

cause the “

TSQL

” notation to appear. When “

TSQL

” is

displayed, this means that the Tone Squelch system is ac

tive and will mute the

FT-252

receiver until it receives a call from another radio that

is sending a matching CTCSS tone. This can help keep your radio quiet until a spe

cific call is received; this may be helpful while operating in congested areas of the

band.

1) You may notice a “REV TN” indication on the display while you rotate the

DIAL knob in this step; this means that the Reverse Tone Squelch system is

active, which mutes your FT-252’s receiver (instead of opening the squelch)

when it receives a call from any radio sending a matched CTCSS tone. The

“

” icon will blink on the display when the Reverse Tone Squelch system is

activated.

2) You may notice the “DCS” indications on the display while you rotate the

DIAL knob still more. We’ll discuss the Digital Code Squelch system (DCS)

later.

6. When you have made your selection of the CTCSS tone mode, press the

PTT

switch

to save the new setting.

7. Press the

[

SET/ATS

]

key to enter the Set mode.

8. Rotate the

DIAL

knob or press the

[

]/[

]

key to select

Set Mode Item 42:

TN FRQ

9. Press the

[

SET/ATS

]

key momentarily to enable adjust

ment of this Item.

honbun_130313.indd 17

2013/03/13 19:47:48

Содержание FT-252

Страница 1: ...hi Shinagawa Shinagawa ku Tokyo 140 0002 Japan YAESU USA 6125 Phyllis Drive Cypress CA 90630 U S A YAESU UK Unit 12 Sun Valley Business Park Winnall Close Winchester Hampshire SO23 0LB U K YAESU HK Un...

Страница 2: ...LCD 4 Installation of Accessories 5 Antenna Installation 5 Installation of FNB 124LI Battery Pack 5 Battery Charging 6 Low Battery Indication 6 Belt Clip Installation Removal 7 Operation 8 Switching P...

Страница 3: ...usive Auto Transponder System ATS which beeps the user when moving out of communications range with another ATS equipped station and an RF squelch circuit which allows adjusting the squelch to open at...

Страница 4: ...se with 100 120 VAC C is for use with 230 240 VAC and F is for use with 220 VAC Availability of accessories may vary Some accessories are supplied as standard per lo cal requirements while others may...

Страница 5: ...after your transmission is completed LCD Liquid Crystal Display The display shows the current operating conditions as described on the next page Keypad These 9 keys select many of most important oper...

Страница 6: ...emory Channel or Pref erential Memory Channel Repeater Shift Direction CTCSS DSC Operation Bell Alarm Active Battery Saver Active Dual Watch Active Priority Channel Battery Indicator Memory Bank Activ...

Страница 7: ...ted to the transceiver is 1 5 1 or lower to avoid excessive feedline loss Installation of FNB 124LI Battery Pack The FNB 124LI is a high performance Li ion battery providing high capacity in a compact...

Страница 8: ...harged completely in 5 hours Disconnect the SAD 11B or PA 48 from the EXT DC jack and the AC line outlet Installation of Accessories Important Note The SAD 11B and PA 48 is not designed to power the t...

Страница 9: ...lt Clip to the groove above the Battery compartment then press the Belt Clip downward until it locks in place with a Click To remove the Belt Clip Press the Belt Clip tab away from the transceiver to...

Страница 10: ...Press the VOL SQL key twice to enter the squelch level ad justment mode When SQL is displayed rotate the DIAL knob or press the p q key to set the Squelch so that the background noise is just silenced...

Страница 11: ...of the FT 252 2 Scanning Press and hold in either the or key for one second to initiate upward or down ward scanning Manual VFO Scan If you wish to reverse the direction of the scan i e toward a lowe...

Страница 12: ...n the immediate area you ll get much longer battery life by switching to Low Power operation described in the next chapter And don t forget always have an antenna connected when you transmit 2 Transmi...

Страница 13: ...mode 2 Rotate the DIAL knob or press the p q key to select Set Mode Item 22 LOCK 3 Press the SET ATS key momentarily to enable adjust ment of this Item 4 Rotate the DIAL knob or press the p q key to...

Страница 14: ...able adjust ment of this Item 4 Rotate the DIAL knob or press the p q key to select one of the three modes de scribed above 5 When you have made your choice press the PTT switch to save the new settin...

Страница 15: ...ment of this Item 4 Rotate the DIAL knob or press the p q key to select the desired signal strength level for the squelch threshold S 1 S 2 S 3 S 4 S 5 S 7 S FULL or OFF 5 Press the PTT switch to save...

Страница 16: ...ifts have been enabled Automatic Repeater Shift ARS The FT 252 provides a convenient Automatic Repeater Shift feature which causes the appropriate repeater shift to be applied automatically whenever y...

Страница 17: ...S off if you do not wish this to happen If you manually change the repeater shift on a memory channel that you have already stored the radio will consider this a temporary change unless you store the...

Страница 18: ...eration to revert to normal monitoring of the repeater downlink output frequency While you are listening on the input frequency to the repeater using the REV key the repeater offset icon will blink Th...

Страница 19: ...ans that the Tone Squelch system is ac tive and will mute the FT 252 receiver until it receives a call from another radio that is sending a matching CTCSS tone This can help keep your radio quiet unti...

Страница 20: ...op eration is very similar to that just described for CTCSS Your repeater system may be configured for DCS if not DCS is frequently quite useful in Simplex operation if your friend s use transceivers...

Страница 21: ...to enter the Set mode 4 Rotate the DIAL knob or press the p q key to select Set Mode Item 8 BELL 5 Press the SET ATS key momentarily to enable adjust ment of this Item 6 Rotate the DIAL knob or press...

Страница 22: ...T switch momentarily to save the new setting and exit to normal operation When the Split Tone feature is activated you can see the following additional param eters following the DCS parameter while se...

Страница 23: ...he SET ATS key momentarily to enable adjust ment of this Item 4 Rotate the DIAL knob or press the p q key to select T CALL on the display 5 Press the PTT switch to save the new setting and exit to nor...

Страница 24: ...ge if this is the case proceed to step 4 If you wish to se lect a different channel number into which to store the data rotate the DIAL knob or press the p q key to select the desired memory channel 4...

Страница 25: ...em 30 REV HM from REV to HOME if it is not already set to this option see page 59 2 Select the desired frequency while operating in the VFO mode Be sure to set up any desired CTCSS or DCS tones as wel...

Страница 26: ...to program the remaining letters numbers or symbols of the desired label A total of six characters may be used in the creation of a label 10 When you have programmed a label which is under 6 char acte...

Страница 27: ...the Memory Tuning fea ture The Memory Channel number will be replaced by tun And if you have an alpha numeric Tag displayed on the memory channel the display will automatically revert to display of th...

Страница 28: ...Assigning Memories to a Memory Bank 1 Recall the memory channel to be assigned to a Memory Bank 2 Press and hold in the V M key for one second then ro tate the DIAL knob or press the p q key to select...

Страница 29: ...oved to the VFO 2 Press and hold the V M key to activate the Memory Tune feature temporarily then press and hold in the V M key for one second The data will now have been copied to the VFO although th...

Страница 30: ...es on a station press the PTT switch once to halt the scan or press it twice to restart the scan 4 To exit to normal operation press the V M key Severe Weather Alert In the event of extreme weather di...

Страница 31: ...encounters and will hold there for five seconds If you do not take action to disable the scanner within that time period the scanner will resume even if the stations are still active To set the Scan...

Страница 32: ...5 MHz PMS x and ALL 1 MHz 2 MHz 5 MHz The scanner will sweep frequencies within the selected bandwidth PMS x The scanner will sweep frequencies within the currently selected PMS frequency pair See pag...

Страница 33: ...ume scanning Such channels may be Skipped during scanning if you like 1 Recall the Memory Channel to be skipped during scanning 2 Press the SET ATS key to enter the Set mode 3 Rotate the DIAL knob or...

Страница 34: ...y enter the Skip channel selection mode 5 Rotate the DIAL knob or press the p q key to select ONLY 6 When you have made your selection press the PTT switch to save the setting and exit to normal opera...

Страница 35: ...elect the first Memory Bank BANK 1 BANK10 you wish to sweep using Memory Bank Link Scan 3 Press the F MW key momentarily The current Memory Bank will now be swept during Memory Bank Scan A decimal poi...

Страница 36: ...nto Memory Channel L1 the L designates the Lower sub band limit 3 Likewise store 148 000 MHz into Memory Channel U1 the U designates the Upper sub band limit 4 Confirm the radio is in the VFO mode pre...

Страница 37: ...ority mode Memory Channel Priority 1 Store the frequency you wish to be the Priority Channel into memory channel 1 2 Now set the radio for operation on another memory channel 3 Press the F MW key then...

Страница 38: ...you to move to the Priority channel instantly without waiting for activity to appear on the Priority channel When this feature is enabled and Priority monitoring is engaged just press the PTT switch o...

Страница 39: ...ode Item to OFF 5 When you have made your selection press the PTT switch to save the setting and exit to normal operation Band Edge Beeper The FT 252 will automatically beep when a band edge is encoun...

Страница 40: ...ess the SET ATS key to enter the Set mode 2 Rotate the DIAL knob or press the p q key to select Set Mode Item 46 WX ALT 3 Press the SET ATS key momentarily to enable adjust ment of this Set Mode Item...

Страница 41: ...o seconds after the PTT switch release the Emergency feature will resume To disable the Emergency feature press the F MW key momentarily or turn the ra dio off by pressing the POWER key Use this featu...

Страница 42: ...will continue sweeping until they are all filled Setting the Smart Search Mode 1 Press the SET ATS key to enter the Set mode 2 Rotate the DIAL knob or press the p q key to select Set Mode Item 35 S S...

Страница 43: ...e display will revert to OUT RNG If you move back into range your radio will again beeps and the display will change back to the IN RNG indication During ATS operation your operating frequency will co...

Страница 44: ...e a polling transmission is received from the other station the alert beeps will be heard OFF No alert beeps will be heard you must look at the display to confirm cur rent ATS status To set the ATS Be...

Страница 45: ...selected register 6 Rotate the DIAL knob to select the first digit of the DTMF string Selectable entries are 0 9 and A F with E and F representing DTMF and tones respectively 7 Press the F MW key to...

Страница 46: ...is completed You can change the DTMF Autodialer sending speed using Set Mode Item 16 DT SPD See page 57 for details You can also set a longer delay between the time you press the numerical key corre...

Страница 47: ...etter number 7 When you have finished entering the ANI code and it contains less than 16 charac ters press and hold in the F MW key for one second to confirm the callsign if the ANI code has exactly 1...

Страница 48: ...ess the F MW key momentarily to save the first letter number and move on to the next char acter 6 Repeat the previous step as many times as necessary to complete your callsign If you make a mistake pr...

Страница 49: ...to move back to the previous digit then re select the correct number letter 8 When you have finished entering the password press the PTT switch to save the new setting and exit to normal operation We...

Страница 50: ...h to save the new setting and return to normal operation Receive Battery Saver Setup An important feature of the FT 252 is its Receive Battery Saver which puts the ra dio to sleep for a time interval...

Страница 51: ...switch which limits transmission time to a pre programmed value This will promote battery conservation by not allowing you to make excessively long transmissions and in the event of a stuck PTT switc...

Страница 52: ...obile Radio service where it is now in widespread use DCS is sometime referred to by its different proprietary names such as DPL Digital Private Line a registered trademark of Mo torola Inc DCS uses a...

Страница 53: ...Deviation Level In many areas of the world channel congestion has required that operating channels be closely spaced In such operating environments it often is required that operators use reduced dev...

Страница 54: ...to select one of the choices from the reset menu F1 SETRST Resets the Set Menu mode settings to their factory defaults F2 MEMRST Clears the Memory settings to factory defaults F3 MB RST Clears the Me...

Страница 55: ...es the beeper Selects the number of CTCSS DCS Bell ringer repetitions Shifting of the CPU clock frequency Programs and activates the CW Identifier Enables disables the CW identifier during ARTS operat...

Страница 56: ...e Tone Encoder and or Decoder mode Indicate the current temperature inside the transceiver s case Setting of the CTCSS Tone Frequency Setting of the TOT time Enables Disables the Transmitter Battery S...

Страница 57: ...ts that you are within range ALWAYS Beeps sound every time a polling transmission is received from the other sta tion every 15 or 25 seconds when in range OFF No alert beeps sound Set Mode Item 5 ARS...

Страница 58: ...e Item 12 DC VLT Function Indicates the DC Supply Voltage Set Mode Item 13 DCS COD Function Setting of the DCS code Available Values 104 standard DCS codes Default DCS 023 Set Mode Item 14 DCS N R Fun...

Страница 59: ...smits the Morse Code SOS message on the air be ginning one minute after activation of the Emergency function EMG C B Loud Alarm sounds and the Morse Code SOS mes sage is transmitted on the air beginni...

Страница 60: ...le Values MONI T CALL Default Depends on the transceiver version MONI Pressing the VOL SQL key causes the Noise Tone Squelch to be over ridden allowing you to listen for weak or non encoded signals T...

Страница 61: ...Default REV REV Pressing the REV HOME key reverses the transmit and receive frequencies during repeater operation HOME Pressing the REV HOME key instantly recalls a favorite Home channel Set Mode Ite...

Страница 62: ...st MEM The scanner will skip the flagged channels during scanning Set Mode Item 37 SCN LMP Function Enables Disables the Scan lamp while paused Available Values ON OFF Default ON Set Mode Item 38 SKIP...

Страница 63: ...able Values 1MIN 30MIN or OFF Default OFF The time out timer shuts off the transmitter after continuous transmission of the pro grammed time Set Mode Item 44 TXSAVE Function Enables Disables the Trans...

Страница 64: ...Operating Manual 62 Set Mode Item 46 WX ALT Function Enables Disables the Weather Alert Scan feature Available Values ALT OFF ALT ON Default ALT OFF Set Menu Mode honbun_130313 indd 62 2013 03 13 19...

Страница 65: ...knob antenna belt clip Weight 9 9 Oz 280 g with FNB 124LI antenna and belt clip Transmitter RF Power Output 5 0 W High 2 0 W Middle 0 5 W Low 7 4 V Modulation Type Variable Reactance F2 F3 Maximum Dev...

Страница 66: ...FT 252 Operating Manual 64 Note honbun_130313 indd 64 2013 03 13 19 48 12...

Страница 67: ...cause undesired operation 3 The scanning receiver in this equipment is incapable of tuning or readily being altered by the User to operate within the frequency bands allocated to the Domestic public C...

Страница 68: ...ight 2013 YAESU MUSEN CO LTD All rights reserved No portion of this manual may be reproduced without the permission of YAESU MUSEN CO LTD Printed in Japan EH053N100 cover_130313 indd 4 2013 03 13 17 3...

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