[R-390] Re: R-390 digest, Vol 1 #920 - 6 msgs

Mon, 8 Dec 2003 17:45:22 -0600

Just a thought....unless one looks closely it's hard to tell you are looking
at an R-725.  It would be easy at quick glance to mistake one for an R-390A.
It's possible most ops didn't know there was a difference...they just saw
racks of what appeared to be R-390A's. (not to take anything away from the
ops)

My Dad mentioned the ability the guys had to do DF with the large Elephants
cage antennas...Flair 9's is what I am told they are designated.  Probably
had dozens of receivers tied to that thing to resolve an accurate fix.  The
antenna was a fixed array so DF had to be by measuring levels and/or phase
angles.  Not sure what was used back when Dad was there...could have been
anything from SP-600JX-17's to R-725's I would guess.  He did mention that
the ops had a rotary switch of sorts mounted below the desk top that would
allow them to select which receiver they were listening to.  Wish I knew
more!

Cecil...
----- Original Message ----- 
From: <[email protected]>
To: <[email protected]>
Sent: Monday, December 08, 2003 3:40 PM
Subject: [R-390] Re: R-390 digest, Vol 1 #920 - 6 msgs

> I don't know if this info helps your arguement, but I sat DF (when my
> automated position was up and running on its own) at one of the biggest
overseas
> sites (now de-activated) and I don't recall anything called an R-725.
R-390A's
> were everywhere, morse intercept operators and voice guys used the model
with the
> familiar turn knob on the BFO. Positions working with radio-teletype (my
> specialty) used the model with the mechanical BFO that was much more
precise with
> a readout in the center.
>
> RS
>
>
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