[GreenKeys] R-808 ///// AN/GRC-14

[Scott Johnson]

Paul-
The R-808 was part of the GRC-14 set procurred by the navy for USMC use.  It 
seems to be a case of interservice rivalry, because although the GRC-14 is a 
newer set, its performance fall short of the GRC-19 in several areas. It is 
almost twice the weight of the GRC-19, the power supply alone weighs 190 
LBS!  The GRC-14 consisted of two R-808's, the transmitter, power supply, 
TTY, and a big alternator with a selenium stack rectifier that mounted in 
front of the radiator on the M-38A1 that hauled the whole mess. It does have 
some interesting features, such as built in RTTY converters, etc. The 
transmitter frequency is selected by decadic knobs, in sort of a rudimentary 
tube-base synthesizer, which can also be operated as a MO if the synthesizer 
crumps. The power supply design is way beyond stupid.  If AC operation is 
contemplated, a tranformer-rectifier unit supplies 28VDC to the largest 
dynamotor I have seen.  (I am, however looking for a power supply to 
complete my GRC-14).  In my opinion, the USMC should have used the GRC-19 in 
the GRC-46 equipment configuration. I'm sure this is what ultimately brought 
about the TRC-75, a 1KW SSB set that weighs less than the GRC-14!   At any 
rate, the R-808 is a nice receiver, and it even has a few transistors! 
(Check out the doorknobs behind the little plate up in the LH corner of the 
front panel)
I have the manual and could copy the pertinent receiver material if you 
like.

Scott W7SVJ
----- Original Message ----- 
From: "Nell, Paul C." <pcnell at trane.com>
To: <greenkeys at mailman.qth.net>
Sent: Tuesday, May 09, 2006 5:33 AM
Subject: [GreenKeys] R-808 ///// AN/GRC-14


> Seeking any information on the above receiver. Apparently, this receiver
> followed the R-392 in the evolutionary process of portable receivers(26
> tubes with some solid state) The receiver has some onboard RTTY 
> capability.
> Looking for manuals / schematics / technical information, that would be
> helpful for trouble shooting purposes, or any leeds/contacts that could be
> of assistance.
>
>
>
> Thank you.
>
>
>
> Paul N3YHO
>
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