TABLE OF CONTENTS Lo Specifications DESCRIPTION INSTALLATION S o i Screenwriting 3 IV CONTROL FUNCTIONS o 8 VOCIFERATION (oo ool Creramosiaininy 11 VEG INSIDE VIEWS oo 23 VIO TROUBLESHOOTING BLOCK DIAGRAM SCHEMATIC DIAGRAM oo iy .
SECTION i DESCRIPTION THE MOST COMPACT 144MH2 MOBILE The smallest 144MHz mobile available, the IC-27H measures ably: 38 millimeters high by 140 millimeters wide. 'As an added bonus, the 1C-27H. through ICON engineering, is able to contain an internal speaker to provide eased of mounting and carmaker the unit one small compact complete package. HIGH OUTPUT POWER Inasmuch incredibly small package; the 1C-27H lis able to: provide 45 watts of output power.
SECTION HI INSTALLATION UNPACKING Carefully remove your transceiver from the pecking carton gnd examine it for signs 'of shipping damage. Should any be apparent, notify the delivering carrier or dealer immediately, stating the full extent of the damage 1t is recommended you keep the shipping cartons: fn the event storage: moving,: of reshipment becomes necessary, ‘they come in handy. Accessory hardware, cables, etc, are packed with the transceiver. Make sure vou have not overlooked anything. 1.
POWER: REQUIREMENTS The transceiver is supplied ready 'to ‘operate: from:any regulated \13.8V: DG; 10 ampere negative ground source.. | An automobile 12 volt, negative ground; system: is usually: more than adequate.
ANTENNA The most:important single-item: that will influence the performance-of any communication:system is the antenna. For that reason; a good; high-duality; gain ‘antenna of B0 ohms impedance is recommended. fixed: or mobile: in VHF as wile as the low bands every watt of ERP makes some difference.
SECTION 1V CONTROL FUNCTIONS FRONT PANEL RECEIVE INDICATOR TRANSMITTING INDICATOR: ENVENOM INDICATOR DUPLEX INDICATOR MEMORY CHANNEL DISPLAY: PRIORITY INDICATOR @SCAN START/STOP BUTTON TONE INDICATOR (USA Version univ) SI TUNING: BATE Switch (FREQUENCY. DISPLAY i VOLUME CONTROL snd @yro sane POWER SWITCH ‘ IMMEMORIAL: (IRE POWER SWITCH SWITCH SRR s (TONE SELECT TUNING cont Roe Tt @MHz UP BUTTON MIC CONNECTOR (MEMORY. WRITE/OFFSET i CHECK BUTTON SQUELCH: CONTROL OFFSET.
4. SCAN START/STOP BUTTON Starts:and stops:any of the scan functions: ‘When depressing it to restart the scan, it will start from the memory channel or frequency displayed: TUNING RATE SWITCH Selects the tuning frequency steps:: When this switch:is pushed in;: the frequency changes in KHz steps (European version: 125K Hz steps) by turning the TUNING CONTROL: When the:switch: 15 in-the 'out: position, the frequency changes in 18K Hz steps (European version and Australian version: kHz steps).
When receiving on g frequency with: memory channel, by ‘pushing the priority button, the receiving frequency goodwill to: the :VEQ: frequency: previously set for:a moment -every five seconds: SQUELCH CONTROL Turning: this: control: clockwise ‘sets the squelch threshold higher:: To turn QFF the squelch function; turn this control completely counterclockwise. VOLUME CONTROL and POWER SWITCH When the control is warned completely counterclockwise; the power is OFF.
22. RECEIVE INDICATOR Illuminates when the squelch is opened in the deceive mode. 23. TRANSMIT INDICATOR Inseminates in'the transmit mode. 24, DUPLEX INDICATOR Humiliates when ‘the set is in the DUPLEX mode. “PUD-" shows the transmit frequency will-be below:the receive frequency; and “DUPE” shows the transmit frequency will above recessive frequency. 25. TONE INDICATOR version only) Incriminates when the sub audible tone encoder is activated.
UNDER THE ACCESS COVER ECRU RESET SWITCH TRANSISTOR TIMER SWITCH TOSCANINI MODE switch COB CAN-STOP FUNCTION SWITCH CUSTODIANSHIP INTERVAL SWITCH SCAN SPEED SWITCH 29, CPU RESET SWITCH Resets the CPU into the initial condition. if the CPU seers abnormal; push this switch while the power s ON; ‘and the CPU will be reset. SCAN SPEED SWITCH Switches the scanning speed in‘any scan mode.
3=t ON V OPERAS HOW TO TUNE The following instructions .are for the tuning. Please read carefully and understand fully before turning ON your unit: Proper tuning is necessary for optimum operation. PRESET FREQUENCY When the POWER switch is first turned on or the PRESET switch s pushed, the FREQUENCY EX SPLAY: will be 47.00' representing 147 000MBz: (European: version: and Australian: version: “45.00 representing 145,000MHz}; and the MEMORY CHANNEL DISPLAY will be 0" representing memory channel 0.
FOR: EXAMPLE: 1145 760MHzZ 18 set with: the ME QUA and the VEQ switch [is ‘pushed to select the MEQ B, the Frequency: readout will-show ‘the VFQ: B's frequency; but: 145.760MHz is still-stored in the VEQ Als memory.: Pushing the VEO switch again: to return 1o the VEO A 745757 will be displayed on the readout..
1t you change the receive frequency: from 145.725MHz 1o 145.6 MHz, the transmit frequency will: grange : from: 145 125MMz "o 145.075MHz “so now “you “tan “access & repeater Pushing the “+DUPLEX" button changes the transmit frequency: to: B00KHz above the receive frequency. set the receive frequency 1o 145.128MHz; the transmit frequency will be: 145.725MHz.
MEMORY CHANNEL: OPERATION MEMORY CHANNEL SELECTION When the power switch 1§ first turned ON or the CPU RESET button s pushed, ‘the set initially. operates ini the: VEO mode and: memory channel number “0" is displayed.: By pushing the VFO/ MEMORY: switch; the set s switched into: the: MEMORY: CHANNEL MODE and a:frequency.
MEMORY-WRITE (PROGRAMMING THE MEMORY: CHANNELS) Any operating frequency: duplex mode, ‘offset frequency and sub audible tone frequency (USA version: only} can be memorized into a memory. 1. et the operating frequency to desired one using & VEO. “For example, set it for '1145.725 MHZ by Using VERVE! 2. Push the MEMORY switch to set in the MEMORY. .CHANNEL mode, then select a memory: channel 1o be used: by muting the TUNING CONTROL: ‘For example, select it at memory channel 5. 3.
SCANNING OPERATION MEMORY SCAN This is used to'scan the nine memory channels continuously: 1 2: 5. Program tine desired frequencies into MEMORY CHANNELS 0~ 8] Phish the MEMORY switch to select the MEMORY CHANNEL mode.
4. “Whigs the SQUELCH: is engaged; the squelch opening as a signal is received Wil stop the scanning: automatically on ‘the: frequency. “ 1f the RECEIVE indicator is iit because the SQUELCH is not engaged, the scan does not start. 5.: To stop the scan operation; push the SCAN START/STOP button: Pushing the 5/8 Button again restarts the scan from the frequency at which stopped: 6.1 Sheri the scanning has automatically: stopped ona: frequency. ‘the frequency can not be ‘changed by turning the TUNING CONTROL.
SIGNAL RECEIVED NO SIGNAL 3 RACKETEER e SR CRR O S SRR SRR panned 801 clad o SCAN OFF 815 pushed: Auto:stop Scan restarts 1 §/S pushed. i85 ashed Scan starts {Manipulator {Manual restart) 2.
SIGNAL RECEIVED NO SIGNAL S0 L snapshot: :SQL closed OoN SCAN OFF pushed inspected S/ ousted | S/5 pushed Scan starts RSO Bean restarts {Manual stop)- (Manual restarts) Set the: SCAN-STOP TIMER Switch, SCAN.STOP INTERVAL Switch, and SCAN-STOP FUN: SON SWITCH as to your own choice. This function provides & way 1o check our favorite channel, such as 4 Local repeater ora calling channel; that is written into a memory channel while operating on a FREQ frequency.
L Second: 11 Second T Second Si Seconds i5 Seconds 5 Seconds 5 Seconds ! 1 1 Frequency. J i PRIORITY Underage Transmit PRIORITY SW. SORORITY SW (Marjory Changsha pushed pushed perturbed TOEFL © earned ONY TONE ENCODER OPERATION [U5.A. version only) The 1G-27H {LL.S.A; version} Is equipped with a sub audible tone calendar: By pushing the TONE SELECT button; the FREQUENCY: DISPLAY shows a tone number instead of:the aerating frequency.: While-holding the TONE SELECT button.
When selecting a number except “007 the tame circuit is rend ON and the fetters “TONE"are indicated on the frequency display. Her selecting the amber 007, the ‘tone rigidity is' turned OF Viand the letters “TONE are also turned OFF. This tone number s memorized into the VEQ or MEMORY: CHANNEL which is selected When the tone number-has-been set) ‘The sub audible tone s transmitted-when the setting in DUPLEX mode only even if the tone indicators illuminated.
signal is received which ‘opens the:squelch and lights the RECEIVE indicator. : I the squelch is unstable due to the reception of weak signals.or mobile stations, adjust the SQUELCH CONTROL further until the proper threshold is obtained.
ON ViI TROUBLESHOOTING Your 1G-27H has: been tested very carefully at the factory -before shipping::: The chart: below has ‘been designed: 10 help you correct any problems which are not equipment malfunctions. 1f carnivore not able 1o locate the problem and/or solve 1t through use of this chart; ‘pleads contact your dealer 'of the nearest ICON service center for assistance. turned. Po wet cord {connected with the polarity reversed. Blown:fuse. Problem Possible Cause Solution 1.
Problem Possible Cause solution 6. The receive made dune: sons properly and your signals “are transmitted: buyout are unable 1o make a contact with another station: The sites r Duplex mods {Wuhan' ' desiring SIMPLEX diadem) Thai sites in SIMPLEX mode. {When . deicing. . DUPLEX mode.] Improper frequency split.or outputting frequency of the repeater. Push “the “DUPE or Spur button: to g0 off both DUPLEX indicators. Push the 'DUH “or DUPED Button i according [ o repeater input/output frequency.
