>
>> A word of caution on Harbach suppressors. If the suppressor for a 922 is
>> short on L - the VHF Q of the suppressor may not be low enough to prevent
>> intermittent oscillation at c. 120MHz. . A VHF suppressor that runs
>> cool at 28MHz is unlikely to be very lossy at VHF.
>
>I just installed Harbach suppressors in a 922. The original was 2 1/2 turns
>in parallel with 24 ohms. Al's suppressor consists of 5 turns of nichrome
>and two 100 ohm 3 watt Matsushita resistors. They do run a little warm at
>28 MHz.
>
Thanks for the into, Steve. At 28MHz with locked key, Matsushita mof
resistors should get approximately as hot as Hell. They should turn a
lighter shade of blue with brown blotches. To cause this, L-supp needs
to be c. 100nH.
- cheers
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