[ARC5] BC-230 first run

[AKLDGUY .]

On 3/30/16, J Mcvey <ac2eu at yahoo.com> wrote:
> When I mentioned a Tx cap, I meant the High voltage ( usually around 1KV)
> NPO ceramic or mica types. The vacuum cap on an ARC-5 or BC441 antenna
> switch would be perfect. The ARC-5 tank variable fully meshed may be greater
> capacitance ( less reactance) than what you need to get into the tuning
> range. I tried looking those tank caps up but neither the ARC5 nor SCR274
> manuals list the actual range of the var caps! You will have to check it
> with a cap checker to get an idea of the range.If that is all you have, then
> I'd try half mesh next.
> But hey, you're making progress...

Somewhere in the past 50 years I read that the three ARC-5 / SCR-274 tuning
capacitors are either 100 or 150 pF (can't remember which). It would be an
interesting exercise to use one in an oscillator, then substitute known fixed
caps until the same frequency is achieved. Someone with time on their hands?

73 de Neil ZL1ANM