Frequency Calibration - Icom IC-706MkIIG Quick Start Manual

KV5R: Icom IC-706MkIIG Mods and Tips
3. Setting the mike gain at 4-5 and talking across it is sufficient for all bands and modes.
4. Do not use the processor (CMP) except in extremely marginal conditions! The supplied hand mike
is so clear that the added "punch" of the processor is rarely needed. Also, the processor will add
substantial bandwidth and splatter on SSB, drawing complaints form nearby QSOs.
5. The output power level is NOT stored in memories. There is one setting for HF and one for V/UHF.
Output power will need to be adjusted manually as you move from nearby to distant repeaters, or
from strong to weak SSB stations.
6. Icon radios seem to use the ALC circuit to control power output. When you are at high power,
you'll see little or no ALC meter indication; when at low power you will see full ALC indication. This
is normal operation! Do NOT adjust the mike gain to set ALC levels, as with most other radios.
Leave the mike gain at 4-5, set the power as needed, and don't worry about the ALC meter.
7. If you do install a different mike, you'll need to determine a new "best" mike gain setting.
Setting up your memory channels
It is important to set up your memory channels in a table before committing to fully programming the
706. I recommend you:
1. Group all your FM channels together, from 50-99 (or so);
2. Group all your other non-FM channels together, from 1-49 (or so);
3. Use a Word table to develop your channel list; sort it by frequency, then install it.
4. Take your time! The better your list, the less fragmentation will develop over time.
5. If you perform the Frequency Expansion modification (below), it will erase ALL settings and
memories and return the radio to factory settings. If you REALLY want to use 60 meters and/or
MARS, do it NOW and save the long process of programming everything twice.

Frequency Calibration

Unlike older radios, the 706 uses only one crystal oscillator (called the Master Oscillator). All other
frequencies in the radio (L.O., 3-4 I.F. stages, VFO, and CW-offset) are computer-derived from the
Master Oscillator. This makes it relatively simple to frequency-align the radio, so that it agrees with the
Frequency Display in all modes.
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