[Milsurplus] 375 Questions

David Stinson arc5 at ix.netcom.com
Mon Jan 26 05:16:23 EST 2009


----- Original Message ----- 
From: "Hue Miller" <kargo_cult at msn.com>
Subject: [Milsurplus] 375 Questions


> Let me ask this about the BC-375:
> Dave, when you throttled back the 375
> for 40w out, what was the input plate 
> current?

I'm embarrassed to say I didn't look that close, Hue.
>From memory, I'd guess it was between 
150 and 200 mils.  Now you've got me 
curious; I'll fire it back up and look.
Lotsa inna for a little outta,
but I care about the history, not the efficiency.
We have plastic radios for that ;-).

> Also- a more generic transmitter question.
> I assume the transmit dyno only spins up
> when manually switching to transmit ...

The dyno for the 375 does not switch with T/R,
as do the ones for at ART-13 and ARC-5;
it runs continuously.  I have a tech advisory here
that instructs the Radio ops to either remove
one of the end bells for better cooling or 
to limit operating time to 30-minute stretches.
This problem is likely the reason there are some 
later, improved variations of the PE-73 dyno.
Mine runs without the low-voltage end bell,
even though it's a later model.
I put a cloth over it when not in use.

It is a lumbering, cave-man of a radio,
and I think it grand.

73 Dave S.




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