[MRCA] R-1451/WLR-6 Manual

[Al Klase]

Gang,

Terryo.org has a file with a component interconnect diagram, and 
schematics of the individual modules:
https://blackradios.terryo.org/documents/manufacturers/Sylvania/Sylvania-R-1451-schematics-block-diagram.pdf

Thanks to the group for helping me find this.  R-1451 is an interesting 
communications receiver from about 1965.



Part of AN/WLR-6 "Waterboy" intercept system for submarines.

It's a straight forward solid-state superhet, but double conversion on 
the upper bands.  They managed to enable the counter to monitor the 
local oscillator, and calculate the frequency.  Crystal filters in the 
I.F., and one can frequency-lock to the counter.

Enjoy,
AL

On 7/8/2025 4:28 PM, Anthony Clare wrote:
> Don't I wish. I have a 1451 too. I got a little info from Nick, K4NYW 
> a while back. Lemme see if I can find it. It's not much but I will 
> send it your way.
>
>
> ------ Original Message ------
> *Received: *Tue, 08 Jul 2025 12:06:50 PM EDT
> *From: *Al Klase <ark at ar88.net>
> *To: *Military Radio Collectors Association <mrca at mailman.qth.net>
> *Subject: *[MRCA] R-1451/WLR-6 Manual
>
>
> Anybody have one?
>
> -- 
> ARK Sig Block Al Klase - N3FRQ
> Jersey City, NJ
> http://www.skywaves.ar88.net/
>
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-- 
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/
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