[MRCA] [SpyRadios] RS-1/GRC-109 operation with a VFO

[Tim]

"







*Somewhere in the garage I have a BC-221-AH frequency meter that I modified
to be a VFO driver for the RT-3.The BC-221 has that really nice tuning cap
and dial assembly.The VFO circuit is a 6AC7 oscillator driving a 6AG7.I
included a crystal calibrator using the original 1 MC xtal, with a 6BE6.
It's tied to a "gimmick" on the RF output lead, and uses the original audio
xformer and phones jack to hear the beat note.AC power supply is a 5Y3 and
0D3, for 150VDC.I've never used it on-air because I'm not licensed for
HF.Pete*"

Hi Pete - Yep - that would be a neat setup - and about the right vintage
too....Smooth tuning - those things are real jewels!
I had modified a hacked-up T-21/ARC-5 transmitter to use as a VFO driving a
retuned CB set (Lafayette HE-90) to work on 10 meters AM back in the
1960's.  That worked well too  Worked into Europe regularly from the East
Coast with plate modulated AM and a 4 element yagi..good fun, learned a
lot....
I still have that T-21.  Might try it on the RT-3, at least it's the right
color!
73, Tim
N6CC

On Fri, Nov 21, 2014 at 3:57 PM, Pete McCollum saipan59 at q.com [SpyRadios] <
SpyRadios at yahoogroups.com> wrote:

>
>
> Somewhere in the garage I have a BC-221-AH frequency meter that I modified
> to be a VFO driver for the RT-3.
> The BC-221 has that really nice tuning cap and dial assembly.
> The VFO circuit is a 6AC7 oscillator driving a 6AG7.
> I included a crystal calibrator using the original 1 MC xtal, with a 6BE6.
> It's tied to a "gimmick" on the RF output lead, and uses the original audio
> xformer and phones jack to hear the beat note.
> AC power supply is a 5Y3 and 0D3, for 150VDC.
>
> I've never used it on-air because I'm not licensed for HF.
>
> Pete
>
>
> ----- Original Message -----
> From: Tim timsamm at gmail.com [SpyRadios] <SpyRadios at yahoogroups.com>
> To: spyradios <spyradios at yahoogroups.com>, MRCA <mrca at mailman.qth.net>
> Sent: Fri, 21 Nov 2014 15:53:37 -0500 (EST)
> Subject: [SpyRadios] RS-1/GRC-109 operation with a VFO
>
>
>
> Hi Guys - I know many of us subscribe to multiple mail lists but it was
> suggested that I also forward this link to SpyRadios and MRCA.  Apologies
> if you've already seen the earlier version. Seems there are more
> RS-1/GRC-109's out there than crystals...  This simple VFO connection
> should also work fine with the RS-6 transmitters. (Flame Shields up...)
>
> FYI, Tim
> N6CC
>
> http://www.n6cc.com/angrc-109-rs-1-transmitter-with-vfo
>
>  __._,_.___
>   ------------------------------
> Posted by: Pete McCollum <saipan59 at q.com>
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