[Boatanchors] 6x5 Rectifiers Used In TCS Shore P/S

[WA5CAB at cs.com]

OK.  Before I put one of the two that I have into service 35 odd years ago, 
I made three mods.  

First I replaced the selenium bridge rectifier with a silicon brick, as 
we.ve discussed for the earlier types.

Second, I bridged the 10 ufd and 8 ufd HV filter capacitors on the 
transmitter supply with a 20 ufd 600 WV electrolytic capacitor.  This raised the 
high B+ to about 450 VDC, with less ripple.

Third, I removed the front of chassis mounted spare fuse holder and 
installed a GK-9-32S chassis connector.  And wired it the same as the ones on the 
standard AC shipboard supplies.  This allows use of the Remote/Loudspeaker, 
which I have mounted on the bulkhead next to several other types of military 
loudspeakers of the era.

The supply is still working fine today.  

If I were going to bring up my spare, I would do the same things.  Plus I 
would inspect the four large oil-filled capacitors for oil leakage.  If there 
is any, replace them.  I would next connect my ZM-3A to pin 2 of the 12-pin 
connector when set to about 250 VDC and then to pin 2 of the 16-pin 
connector while set to about 500 VDC and check for electrical leakage.

I know what the excuse is that the manual gives for omitting the 9-pin 
Remote connector.  But I always thought the excuse was bogus.  The only external 
access to the 600 ohm audio line from the receiver is through a pin in the 
12-pin connector.  I guess that one could break two wires out of the 
receiver power cable but it made more sense to me to just do it the way it was 
designed to be done.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
.
In a message dated 08/25/2016 14:39:44 PM Central Daylight Time, 
mikebracey at att.net writes: 
> Hi Robert,
> 
> 
> I have a PP-380/URR that I'm am beginning to restore. I would appreciate 
> any comments you might have on this unit.
> 
> 
> Mike Bracey 
> KE5YTV
>