[TMC] Wanted: Schematic on a modified FFR-2 (R-5007/FRR-502)

[WA5CAB at cs.com]

Hal,

Thanks.  I suspected that we might be talking about the R-5007A which is 
actually mentioned in Temporary Change T5.  But nowhere else in the changes or the 
basic manual is it mentioned and the early and late schematics only show the 
6AL5.  It's like the elusive R-388A/URR.  A lot of people say they existed and 
a few may say they have one but no one I know of ever came forward with any 
documentation.

Otherwise, see my earlier post on FRR versus FFR.  The TMC manuals in general 
are rife with the same type of error where the writer confused TMC 
nomenclature with AN nomenclature.

So to amend my original post, does anyone have a schematic or any other 
information on R-5007A/FRR-502?

In a message dated 7/9/2008 10:00:07 PM Central Daylight Time, hl at sfsu.edu 
writes: 
> Hi Robert:
> I have two FRRs. One has a name plate simply identified as "FRR- " (no 
> number) and the other "R-5007A/FRR-502." The former has the same tubes as listed 
> in the manual. The R-5007A has the 6BE6, 6FM8, and 7199 tubes that you cited 
> and the tube numbers are printed on the chassis. Unfortunately, I do not have 
> the manual for this variation. It also has a bandpass filter that replaces 
> one of the IF transformers. It is specified as "FL-820, Part # 30190:01:5:518, 
> Manufactured by Ferritronics Ltd., Richmond Hill, Ontario."
> Hope this helps.
> 73 Hal, KK6HY
> 

Robert Downs - Houston
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