[ARC5] Tuning up BC-230 and ARC-5

Michael Hanz aaf-radio-1 at aafradio.org
Wed Mar 30 22:10:13 EDT 2016


_Very_ nice adapter, Dave!  Clean, quick access for installation and 
antenna connection...looks like it was made for the set!  Are you sure 
you're not channeling Dr. Drake? :-)

On 3/30/2016 7:38 PM, David Stinson wrote:
>> The SCR274 and ARC5 types have a sweet spot antenna reactance range 
>> where the roller inductor is >effective. Too much or too little 
>> reactance and I have difficulty getting it to load.The ARCs will load 
>> into >a pure 5-10 ohm resistance if the inductor is at zero. Not sure 
>> if that would work on the BC230, >though.
>> Loading them into REAL antennas gets even more interesting!
>
> Folks, no offense, please.
> But I do not understand the resistance to the simple solution
> for this I've published many, many times.
> If you're on 40 meters, put a 50 pFd high-voltage cap in
> series with the antenna output to the 50-ohm antenna.
> If you're on 80 meters, use 100 pFd.
> If on a TCS, 100 pFd will work for both.
>
> Tunes up like a boss.  To full power.  Every time.
> Please trust me on this.  I don't know or much care
> about the theory.  It just works.

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