[Milsurplus] ARC-1 to ARC-4 QSO

Marty Reynolds cosmoline at aa4rm.ba-watch.org
Wed Sep 24 08:02:58 EDT 2008


> After some crystal grinding to get the rigs on the same frequency, a QSO
> was made between K2WI/m using an ARC-4 in the car, and WW2Y using an ARC-1
> at the K2WI base, over a 2-mile terrestrial path.
>

Big 'Way To Go!!

> Further work needs to be done to boost the modulation of the ARC-1.  K2WI
> had to pull over and turn off the car to hear WW2Y from the speaker.  The
> next thing to be checked is the cathode bypass cap on the modulator tubes.
>

You're onto something  If cap open-circuit there's implicit negative feedback
w. attendant gain reduction



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