Hi Paul,
> Has anyone come up with a solution to the problem of the large pulse
> produced from an ICOM 706 when initially keyed and even with the power
> output turned down?
First, run only 12 volts if you can. The more voltage the bigger the
pulse.
Second, apply a fixed external negative bias on the ALC input line
on the radio. Set it to limit power to a safe value with ICOM power
all the way up.
Third, use a pad if you can or plan the amp input for a full 100
watts.
That spike is nasty on several ICOM radios, particularly the
775DSP. It can be the start of a bandswitch or tuning cap arc,
especially if the amp isn't loaded heavy enough.
73, Tom W8JI
w8ji@contesting.com
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