[Milsurplus] [ARC5] Plug in crystal for ARC TX

[Mike Morrow]

FWIW, the Y-50 transmitter cal check crystal frequencies are standard on each band ONLY for ATA and SCR-274-N transmitters.  AN/ARC-5 transmitter Y-50 frequencies varied on the same band for individual transmitters, except apparreny for T-15, T-16, and T-17/ARC-5 units.  I suspect allowing variance of cal crystal frequencies was purely a cost-reduction measure.

The A.R.C. part number for Y-50 is the same for the ATA and the SCR-274-N (7716), but it is 7785 for AN/ARC-5.

All those details are shown on this pdf file:

  http://mailman.qth.net/pipermail/arc5/attachments/20160425/24b17647/attachment-0001.pdf

(That file has an error for the frequency range of the 1958 A.R.C. Type 12 R-22 receiver, which should be shown as 0.54 to 1.60 kHz.)

Mike / KK5F
  
-----Original Message-----
>From: JAMES FALLS <radio-tuber at att.net>
>Sent: Aug 1, 2020 6:32 PM
>
>If I recall correctly, someone need one recently. What value was it, Please.  I came across a stash and have one but not sure if it was the one that was needed. 
>
>Jim Falls K6FWT 
>______________________________________________________________