[Milsurplus] Interesting TMC Receiver you know where

[WA5CAB@cs.com]

Dennis, Tom &Group,

AN/FRR-49 and the variant AN/FRR-502 are TMC Model FFR. The letters are so 
close that they are easy to confuse and often are. The "FRR" in the AN system 
means Fixed Radio Receiver, where "Fixed" means fixed location, as opposed to 
portable, vehicular, aircraft, etc. In the case of the TMC nomenclature, it 
simply stands for Fixed Frequency Receiver, and means what it sounds like in 
English, fixed frequency, not fixed location. It was intended to operate for long 
periods of time on a single channel.

Plug-in tuning units that were available cover 50-400 KC, 500 KC and 2-32 MC. 
There was also a remote tuning unit called the AMD. 

In a message dated 10/7/2003 7:34:39 PM Central Daylight Time, W7QHO@aol.com 
writes: 
> >Anyone care to take a look at item 2195322848? The seller has it listed as 
> 
> >an
> >FRR-502 and mentions it comes with an FRR-49 manual, he also says it works.
> >
> >Looks interesting, uses plug in modules to cover 100KC to 18MC.
> >
> >Anyone on here seen one of these before?
> >
> 
> I had one of these which simply carried the nomenclature FFR.   Still have 
> the manual which shows tuning drawers covering 2-4, 4-8, 8-16 and 16-32 Mcs. 
>   
> No mention of the 100-200 Kc unit in the listing.   The receiver works OK 
> but 
> nothing special. Two each RF and IF stages.   Provision for xtal control 
> included in the RF drawers.   No bandspread, no xtal filter, no product det. 
>   
> Selectivity listed as 5Kc @ 6db down (didn't seem that sharp to me).   
> Traded it 
> for a TA-12 with the modulator and dynamotor PS.

Robert Downs - Houston
<http://www.wa5cab.com>
<wa5cab@cs.com>


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