Icom IC-91A Service Manual

6-2 TRANSMITTER ADJUSTMENT (continued)
• Set the specified value using [DIAL], and push [BAND] to store the set value. Then push [2] to move to the next adjustment item.
ADJUSTMENT ITEM ADJUSTMENT CONDITION VALUE
FM DEVIATION
[FMV] (/8
(VHF)
1• Connect an audio generator to the [MIC] jack through the JIG cable
(see the page 6-1) and set as;
Frequency : 1.0 kHz
Level : 90 mVrms
• Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• Transmitting
±4.4 kHz
(UHF) 2 • Transmitting
[FMR] (/4
(VHF)
3• Set the audio generator to the [MIC] jack through the JIG cable (see
the page 5-1) and as;
Frequency : 300 Hz
Level : 90 mVrms
• Transmitting
(UHF) 4 • Transmitting
DIGITAL DEVIATION
‡
[DVV] &88
(VHF)
1• Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• Transmitting
±1.2 kHz
(UHF) 2 • Transmitting
[DVR] &84
(VHF)
3 • Transmitting
minimum deviation
(UHF) 4 • Transmitting
DTMF, CTCSS/DTCS
DEVIATION
[DTMF] &6/(
(DTMF, VHF)
1• Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• No audio signals are applied to [MIC] jack.
• Transmitting
±3.5 kHz
(DTMF, UHF) 2 • Transmitting
[CT] %6
(CTCSS, VHF)
3 • Transmitting
±0.75 kHz
(CTCSS, UHF) 4 • Transmitting
[DT] &6
(DTCS, VHF)
5 • Transmitting
(DTCS, UHF) 6 • Transmitting
6 - 4
†The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
‡Necessary for the IC-91AD or when UT-121 is installed into the
IC-91A.
*Displayed on the function display.

Icom IC-91A Specifications

General

Brand	Icom
Model	IC-91A
Category	Transceiver
Language	English