[Milsurplus] PP-1104C - Frost Fest

[Meir WF2U]

Ray, 

 

I own a PP-1104C supply. I use it to run the ART-13, the ATD (with their
dynamotor), the GRC-19, the assorted 28 V receivers which go with these (of
course, not running multiple transmitter dynamotors at the same time). It
starts the DY-17 with only a little bit of groaning of the dynamotor, but it
spins up in a second.  The only problem I had with it, was 3 blown diodes
while operating (the unit has 10x   1N3660 diodes). I made a mistake and
only replaced the 3 original blown diodes. I should have replaced all of
them at the same time, because eventually several of the original diodes
blew a few months ago. I stocked up on more modern diodes, (there are
several DO5 case options for these, with 10 A more current capability and
higher PIV), to replace all of them at the same time. It's not an easy chore
to replace the diodes, the sheet metal they're mounted on which act as heat
sinks, are so tight in the enclosure that it's a very fussy job to fit them
back in their place. It also involves a lot of screws. I'll have a few hours
free time in the next couple of weeks, to do the repair.

 

73, Meir WF2U

Landrum, SC

 

  _____  

From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
Ray Fantini
Sent: Monday, February 08, 2016 10:29 AM
To: mrca at mailman.qth.net; milsurplus at mailman.qth.net
Cc: Aerospace_Hardware_Collectors_Group at yahoogroups.com
Subject: [Milsurplus] PP-1104C - Frost Fest

 

Picked up a PP-1104 Battery Charger/ Power Supply at Frost fest for $20 on
Saturday.  That comes out to about 13 cents per pound at what the TM
11-6130-246-35 says is 152 pounds! Anyone have experience with them? Going
to figure that if nothing else I can use it to power all the stuff on the
M151 without having to run the engine? Will now have to install the slave
connector and find the huge slave cable. The power supply is rated at 50
amps @ 28 volts or you can configure it for 100 amps @ 12 volts. Also
wondering why they did not put handles or any other way to lift this heavy
monster or was that intentional to keep you from trying to lift it?

Not much military there other than an R-390 with the attached MARS sticker
on the front, couple AN/PRC-74 transceivers, couple of those old National
Navy  receivers and an antenna mounting assembly from a Humvee, did not see
any ARC-5 or command set junk. I thought it was a good show with high
attendance and all the tables sold out in advance. I sold almost everything
that was on my table. With the death of Timonium Frost Fest may be the only
noteworthy event around here until the Military show at Aberdeen and then
Dayton. There will be a Ham fest in Manassas in June and one in Baltimore in
July with an small event up at the National Electronics Museum at the end of
this month but that's mostly computers and technology and not radio stuff.

 

 

Ray F/KA3EKH

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