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UHF TRANSCEIVER S-14116IZ-C1-w Mar. 2008...
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8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
: –30˚C to +60˚C (–22˚F to +140˚F) Other than [F25/S –25˚C to +55˚C [F25/S] • Power supply requirement : Specified Icom's battery pack only (7.2 V DC nominal; negative ground) • Current drain (at 7.2 V DC ; approx.) RECEIVING TRANSMITTING Stand-by Max.
SECTION 3. DISASSEMBLY INSTRUCTION 1. REMOVING THE CHASSIS UNIT 2. REMOVING THE MAIN UNIT q Unscrew 1 nut A, and remove 2 knobs B, C. q Unscrew 2 nuts F, and remove the top plate G. w Unscrew 2 screws D. w Unsolder 5 points H, and remove the shield cover.
SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS The RF signals from the bandpass filter are mixed with the 1st LO signals, where come from the RX VCO circuit via 4-1-1 ANTENNA SWITCHING CIRCUIT the BPF (L12, L38, C49, C304, C305), at the 1st mixer cir- The antenna switching circuit functions as a low-pass filter cuit (Q3) to produce a 46.35 MHz 1st IF signal.
4-1-5 AF AMPLIFIER CIRCUIT • CTCSS AND DTCS The tone squelch circuit detects tone signals and opens the The AF amplifier circuit amplifies the demodulated AF sig- squelch only when the receiving signal contains matched nals to drive a speaker. subaudible tone (CTCSS or DTCS).
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4-2-4 APC CIRCUITS 4-2-2 MODULATION CIRCUITS The modulation circuit modulates the VCO oscillating signal The bias current of the drive (Q8) and power (Q7) amplifiers are controlled by the APC circuit. (RF signal) using the audio signals from the microphone. The AF signals from the D/A converter (IC8, pin 3) change The APC circuit (IC2, D1, D30) protects drive and power the reactance of varactor diode (D18) to modulate the oscil-...
4-3-2 VCO CIRCUITS 4-3 PLL CIRCUITS The VCO circuit contains a separate RX VCO (Q14, D16, 4-3-1 PLL CIRCUIT D22) and TX VCO (Q13, D17, D21). The oscillated signal A PLL circuit provides stable oscillation for the transmit fre- is amplified at the buffer amplifiers (Q10, Q12) and is then quency and the receive 1st LO frequency.
4-4 OTHER CIRCUITS 4-6 PORT ALLOCATION LED CONTROL CIRCUITS 4-6-1 D/A CONVERTER IC (IC8) The LED control circuit is composed of the CPU (IC13), Port LED driver (Q32) and LED (DS1). Description number name The CPU outputs “RLED” and “TLED” signals from the pins Outputs the modulation balance level 42 and 43.
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4-6-2 CPU (IC13) Port Port Description Description number name number name Input port for the transceiver’s RLED Outputs receiving LED control signal. TEMP internal temperature detecting Outputs transmitting LED control signal. TLED signal. Input port for the detect signal BATV for connecting battery pack’s OPT3 voltage.
SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION ¤ REQUIRED EQUIPMENTS EQUIPMENT EQUIPMENT SPECIFICATION SPECIFICATION Adjustment JIG cable Modifi ed OPC-478U/UC (USB type) or "CS-F14 ADJ" (Revision 1.0 or later) Software (see the page 5-3) OPC-478 (RS-232 type) Frequency range : 300–3000 Hz Power attenuation : 30 dB Audio Generator Attenuator...
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¤ ADJUSTMENT CHANNELS Create "icf" file/files for adjustment as below, then clone it into the transceiver before starting adjustment. <IC-F24/F25/F26/F4018> <IC-F26-L> (16CH version) q Create the icf file "F26-L ADJ CH.icf." (For [Low band]) “F26-L ADJ CH.icf” q Create the icf file "F24 ADJ CH.icf." “F24Lowband ADJ CH.icf”...
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¤ ADJUSTMENT CHANNELS (continued) Create "icf" file/files for adjustment as below, then clone it into the transceiver before starting adjustment. <IC-F24S/F25S/F26S> (2CH version) (For [Low band]) (For [High band]) q Assigne MR-CH3/MR-CH4 to the [Upper]/[Lower] keys. q Assigne MR-CH3/MR-CH4 to the [Upper]/[Lower] keys. w Create four icf files as below.
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CONNECTION AC millivoltmeter To [MIC] Audio generator OPC-478 (RS-232C type) to RS-232C port Standard signal generator to the antenna connector 0.1 µV to 32 mV (–127 dBm to –17 dBm) to USB port OPC-478U DO NOT transmit while (USB type) an SSG is connected to to USB port the antenna connector.
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STARTING SOFTWARE ADJUSTMENT (1) Connect the transceiver and PC with OPC-478/U/UC and JIG CABLE (see the previous page). (2) Turn the transceiver power ON. (3) Boot up Windows, and click the program group 'CS-F14 ADJ’ in the ‘Programs’ folder of the [Start] menu, then CS-F14 ADJ’s window appears.
5-2 FREQUENCY ADJUSTMENT 5-2-1 FREQUENCY ADJUSTMENT FOR OTHER THAN IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
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5-2-2 FREQUENCY ADJUSTMENT FOR IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
5-3 TRANSMIT ADJUSTMENT 5-3-1 TRANSMIT ADJUSTMENT FOR OTHER THAN IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
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5-3-2 TRANSMIT ADJUSTMENT FOR IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
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5-4 RECEIVE ADJUSTMENT 5-4-1 RECEIVE ADJUSTMENT FOR OTHER THAN IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
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5-4-2 RECEIVE ADJUSTMENT FOR IC-F26-L 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION...
SECTION 7. MECHANICAL PARTS [CHASSIS PARTS] [ANT UNIT] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. MP601 8510016350 2721 ANT PLATE 6910015910 ANT CONNECTOR 104 6910015860 IMSA-6277S-O2A-G 2260002870 AS-243-A13 [2CH] only [CONNECT UNIT] 2510001061 K036NA500-67 ORDER DESCRIPTION QTY. 8900009640 OPC-963 8900009640 OPC-963 [2CH] only J501 6910016390 IMSA-9230B-1-02Z145-PT1...
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IC-F24S/F25S/F26S MP37(C) MP13(C) MP17(C) J1(C) MP36(C) MP35(C) MP8(C) MP31(C) MP1(C) MP17(C) IC-F24S/F25S/F26S ANT Unit S1(C ) MP29( C ) W2 ( C ) CONNECT Unit MP30( C ) S4 ( M ) MP32(C) R226 ( M ) MAIN Unit MP14(C) MP28 ( C ) MP25 ( C ) MP11 ( C )
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Phone : +81 (06) 6793 5302 F ax : +81 (06) 6793 0013 : http://ww w .icom.c o .jp/ w o r ld/ind e x.html <Co r po r ate Headqua r ters> Com m unication Equipment 2380 116th A v e n ue N.E., Bell e vu e , W A 98004, U . S .A.
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