[ARC5] ARC-5 on 20 meters

[Dennis Monticelli]

It was obviously modified.  It could have been minimal such as removing osc
and PA turns to push a T-22 from 9 to 14.  Or it could have been an
intermediate doubler stage as you suggested.

One thing I have been dying to try is to double in the PA.  The driver
transformer in the osc is fortuitously configured to facilitate that.  Of
course the PA tank would still need to be modified for 14 but the osc could
be left at 7.

Dennis AE6C

On Thu, Dec 29, 2016 at 8:35 AM, MICHAEL ST ANGELO <mstangelo at comcast.net>
wrote:

> Good Morning,
>
>
> I get vintage QSL cards as a Christmas present from my daughter's
> boyfriend. I like to track down the equipment used.
>
>
> This year' card as a 1958 QSL form LA7JF in Oslo to KODBK in Kansas. The
> LA station was using a BC-312G as a receiver and an ARC-5 as the
> transmitter.
>
>
> The CW QSL took place on 20 meters CW with a power of 50 watts. I assume
> this is input power.
>
>
> Does anyone know of any popular mods of the ARC-5 transmitters for 20
> meter operation?
>
>
> I guess you could put a tripler in a T-20 or a doubler stage in a T-21 or
> T-22. Did they replace the magic eye tube or crystal with the multiplier
> stage?
>
>
> How did they modify the output for 20 meters?
>
>
> HNY
>
>
> Mike N2MS
>
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