[Milsurplus] Mystery Circuit

[Gene Smar]

Based on the crystal frequency and lack of any other visible inputs for a mic, my guess is it's a HB oscillator for an AM transmitter. 
73 de Gene Smar AD3F 

Sent from my Radio Shack TRS-80 model 100 laptop 
 
  On Fri, Jun 21, 2024 at 11:31 PM, howard holden<holden7471 at msn.com> wrote:   Nope, the Command sets use 8 pin octal sockets for the oscillator, magic eye tube, and the calibration crystal. That's a 7 pin plug like a 42 tube, look at under magnification. Maybe a crystal oscillator for a seven pin tube transmitter. But for sure home made. 

73, Howie WB2AWQ

________________________________________
From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> on behalf of n2lxm at juno.com <n2lxm at juno.com>
Sent: Friday, June 21, 2024 8:21 PM
To: smithab11 at comcast.net
Cc: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Mystery Circuit

If I was to hazard a guess. Maybe a Crystal adapter for an ARC-5 transmitter. There was a circuit in on of the surplus conversion handbook to allow crystal control so a Novice could use a 80 or 40 Meter ARC-5.

On Fri, 21 Jun 2024 20:57:41 -0400 "B. Smith" <smithab11 at comcast.net<mailto:smithab11 at comcast.net>> writes:
Mystery circuit.  See attached.
Not my construction but obviously home brew.
K4CHE
[cid:part1.KRK31WyG.dBVJBmAD at comcast.net]

  
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