[TMC] TMC FRR-502 (R5007) Story and Manual Info

[telegrapher at att.net]

This is from one of the copies i received a year or so ago when i bought 3 of the receivers and some of the tuning drawers.  On page 1-2 it lists all the tuning drawers from the FFRD-1, 2, 3, 3M (500 kc), 5, 6, 7, and 8.  It does, contrary to what i said earlier have the parts list for each drawer.  Only the schematics for the 8-16 and 16-32 drawers are missing so i'm looking for nice clean copies of them.

Andy:
Without going to your web page and drawing the whole manual down, here's what i have. 

Change NO. 1:  Model FFR-3:  6/13/63

Adding a 100K (R151) to the bottom of R-100 and a .01 bypass cap to ground between them and changing the wording from "Cathode Bypass to Grid Decoupling".

Change NO. 2: Model FFR: Oct 4, 1963

Page 4-55:  Change Y500 part no. from "CR-16/U" to "CR-18/U"

Change NO. 3:  Model FFR:  12/11/63

Correct Schematic Diagram for Model FFR-3 as shown below.
Schematic and wiring changes to V-103, 6AL5 plate circuits.

Change NO. 4:  Model FFR: 4/21/64

Variety of changes relating to Page 4-1, 4-13and 4-22.  3 pages total for this change.

Addendum #1:

Modification of Receiver Sub-Assembly R-5007/FFR-502 for Squelch Operation, 2 pages

Temporary correction to NAVSHIPS 92786A, 1 July 1960, TC-2 to technical Manual for Radio Receiving Set AN/FRR-49(V).

The purpose of this change is to bring the manual up to date and is Necessitated by the installation of the field change kit which this correction accompanies.  1 page designating component changes for C-119, C-134 and R-114 along with the insertion of CK-378, Schematic diagram (furnished) at rear of book.

T-3 to Navships 92786(A): 24 April 1961

Temporary correction T-3 to Technical Manual for Radio Receivers AN/FRR-49(V), AN/FRR-502

The purpose of this change is to provide a resistive load on the Audio Output transformer to prevent generation of Peak-voltage transients which could cause failure of capacitor C-127.  1 page

T-4 to Navships 92786A, March 1962:

Temporary correction T-4 to Technical Manual for Radio Receiving Set AN/FRR-49(V) Navships 92786A

Th purpose of this change is to incorporate a crystal oven on the 2-4, 4-8, 8-16 and 16-32 mc RF Tuners.  6 pages

T-5 to Navships 92786A, 17 July 1964:

The purpose of this change is to improve the dynamic range of the receiver, provide a low inpedance IF output, and provide a constant input impedance for the HFO injection Frequency.  Changes tubes and adds a resistor of 50 ohms to the HFO injection line termination.  3 pages.

I be interested if anyone has any other information.  Would be nice for everyone to have as much info as possible for their manuals.

Larry
W0OGH
-------------- Original message from "James A. (Andy) Moorer" : -------------- 
> The manual on my website is the same as NAVSHIPS 92786, but I'm not sure 
> about the 'A' suffix. My copy is just the last bunch of pages for the manual 
> for the entire RCR system, which includes several additional units 
> (remote-control send and console, remote-control receive, and so on). I 
> didn't try to scan the entire RCR manual. I probably should put up a couple 
> of pictures of the entire thing, since it was quite remarkable in 
> appearance. It has standard tube types only. 
> 
> It doesn't list an LF tuning drawer, except for the 500 kHz emergency band. 
> 
> James A. (Andy) Moorer 
> www.jamminpower.com 
> 
> 
> ----- Original Message ----- 
> 
> > Thats really great info. My TMC manual is NAVSHIPS 92786A, Technical 
> Manual for Radio Receiving set AN/FRR-49(V) 1 july 1960 on one cover sheet 
> and 15 Oct. 1956 on another. This is a pretty good sized reproduction of 
> the manual. A name stamp on the front pages is from a fellow in Levitown, 
> Pa. All tubes in it are the standard 6AG5, 6BA6, 6T8 etc. 
> > 
> > I contacted a fellow back east someplace a year or so ago and he sent me 
> copies of a bunch of the changes including an addendum or two and a couple 
> of the NAVSHIPS T series mods. 
> > 
> > Only thing i don't have are the schematics and parts lists for the 8-16 
> and 16-32 mc units. Info is there for all the LF tuning drawers tho. 
> > 
> > I wonder if this is the same manual that Andy Moorer has on his web site? 
> > 
>