[Milsurplus] Re: [ARC5] SCR-274N Makes It on ARRL.ORG

[Thomas Adams]

At 12:15 AM 6/21/2006 -0400, you wrote:
>I don't care what people do with chopped up junk. I do care about NOS
stuff. Any
>article on the stuff should make it absolutely clear non cut up sets
should not be
>turned into hamburger. If someone is going to show off the sets, the setup
ought to
>be as authentic as possible.
>-John
>
>

I hear ya.

I look at all of the old surplus radio manuals and think to myself that
some of the
postwar conversions were pretty neat. THAT'S where chopped up rigs come in
handy.

I just recently got hold of an MD-7 modulator for the SCR-274N rigs that's
way too
far gone for resonable restoration to stock... but the modulation
transformer is
still there. That hacked up, connector stripped chassis is a good basis to
start on
building a more reasonable modulator for ARC-5 rigs (one that includes a
shunt 
reactor and a speech amp stage that will work with dynamic mikes). There's
even a
space for a 12 VDC, non stock dynamotor to be mounted (600 VDC @ 225 MADC)
to power
the modulator and an RF deck attached to it.

Likewise... I've been sitting on a 2.1 - 3.0 MHz Command transmitter, also
somewhat
cut up. That's the RF stage for my 160 Command Set mobile rig. 

I normally grab hacked up surplus rigs for parts value in restoring other
radios...
but the orphans themselves often can and do become useful again, as a basis
for
new construction.


Mr. T., W9LBB