[Milsurplus] Re: PP327B/GRC-9Y Power supply question

[Tom Norris]

The GRC-9 set only has an output of 15 watts or so and its
power supply only needs . It's pretty wimpy for a GRC-19.
It also would not supply the voltages the larger set needs.
Probaly plenty of GRC-9 owners that would be willing to
take it off your hands if you're not using it.

The GRC-19, most specifically the T-195, needs around 40 amps
at 28v to operate and a bit more than that to handle dynamotor
surge on keyup. I couldn't even use my PP-4763 with it because
the surge would trip the breakers every time. I could use it if
I paralleled 2 12 volt batteries across the output of the supply.
The PP-4763 works well with a GRC-106 or GRC-193 and other
400 watt radios. The R-392 needs to have about 8 amps
to handle the filament "on" surge, but only around 3 amps
or so the run. The T-195 has two dynamoters in it. The "small"
is on whenever the function switch is not is standby - it supplies
the 400 Hz for the autotune, the voltages for the bias and
and  the 250V "low B+" for the rest of the transmitter and
for the pa/mod screens. This smaller dynamotor needs
about 15 amps at least to keep going. The "hoss" is the
high voltage dynamotor - or in the B version a solid state
invertor - that supplies 1000 Vdc for the PA and modulator
plates - it is only power up in the TX modes.

Tom


>Hello all,
>I have had a PP327B/GRC-9Y power supply laying around
>for a while.  I haven't been able to find out the
>voltage or current output on it.  I would guess that
>it's made for the GRC-9, but i'm sure it can be used
>for something else.  I recently ran across a GRC-19
>and I need something that can handle it.  Maybe the
>PP327 can?  I've also got a AN/VRQ-3 with the 12V
>supplies.  I'd like to get that up and running too.
>If the PP327 is usable, i'd probably be looking for
>the connector too.
>Thanks,
>Scott
>