[Milsurplus] Germanium semiconductors from PP-3929A/FLR-9(V) Power Supply

[Steve Byan]

On Jan 21, 2007, at 2:04 PM, gl4d21a at juno.com wrote:

> The PP-3928 power supply was the goniometer supply, mounted in the
> frame just below the gonio head.  So, I suspect the following number
> 3929 was one of the multicoupler power supplies.

Could be. Turns out I've got more TM's than I thought - I managed to  
download some from the LOGSA site. The only TM's I've been able to  
get are:

TM 32-5985-217-15
Operator's, Organizational, Direct Support, General Support, and  
Depot Maintenance Manual for
Antenna Group Countermeasures Receiving Set AN/FLR-9(V7)/(V8)

TM 32-5895-234-15
Operator's, Organizational, Direct Support, General Support, and  
Depot Maintenance Manual for
Intercept Group Countermeasures Receiving Set AN/FLR-9(V7)/(V8)
(paper version from NTIS)

TM 32-5895-235-15/2
Operator's, Organizational, Direct Support, General Support, and  
Depot Maintenance Manual for
Direction Finding Group Countermeasures Receiving Set AN/FLR-9(V7)/(V8)
(This is only a partial scan; it's missing the last hundred pages.)

and

TM 32-4940-201-15
Operator's, Organizational, Direct Support, General Support, and  
Depot Maintenance Manual for
Monitor and Test Group Countermeasures Receiving Set AN/FLR-9(V7)/(V8)
(paper version from NTIS)

> What was/were the
> output voltage(s)? +24V, or +5V and +36V, or what?

+10 and -10. This happens to be the supply voltages used by the  
AM-4303/FLR-9(V) Analog Distribution Amplifier in the DF group,  
according to TM 32-5895-235-15/2. But the PP-3929A isn't listed in  
that TM.

> I seem to recall
> VCATS used one of the +5V & +36V supplies also, but it was identical
> to and nomenclatured the same as one of the multicoupler supplies.
>
> I *think* all the Enlarger supplies were prefixed PP-nnnn/FSQ-25(V)
> (can't remember if those are the correct letters), so it is not
> likely one of them.  It also might have been from the original
> interferometer console, which was withdrawn almost as soon as the FLR-
> 9s were deployed, and all the manuals for which were removed from the
> current set.
>
> George
> W5VPQ

I guess the components must have changed over time, as the manuals  
that I have also don't include the CU-1388/FLR-9. I've been hunting  
for a schematic for that for quite a while.

Regards,
-Stev

-- 
Steve Byan <stevebyan at mac.com>
Littleton, MA 01460