[MRCA] AN/GRR-5 receiver usage (was on restoration)

[Tim]

I've wondered about the employment of this radio as well.  Seems it was
designed to be a stand-alone radio with its versatile AC/DC power supply to
permit wide application.  So it was maybe intended to be used for any
general purpose, to include monitoring an alert / warning net of some sort
- response not required.
I've always wondered if the specific "Gas Attack" warning description was
one of those "Internet Facts" that can't go away.  Seems to be a
way-to-narrow application.  Anyway,
FWIW, the 1952 Manual, TM11-295 for the AN/GRR-5, states the following
although it seems this is just a suggested usage (anti aircraft warning
net) and otherwise was non-committal on its intended applications.  Digging
through the various Army TO&E documents would reveal which types of units
should have had them - and therefore their intended use in those units.
Dunno

Here integrated with the VHF-FM set in a vehicle per the drawing.

[image: image.png]
Fun musings...
Tim
N6CC

On Tue, Jul 30, 2024 at 2:46 PM <rl.boltz at mhsdesign.com> wrote:

> We had them mounted in M-38’s and M38A1’s in the late 1960’s.  Only in the
> officers jeeps so not sure what they used them for.  I was in an M-38 with
> the AN/GRC-19 at the time so maybe they monitored us forward observers?
>
>
>
> Ron Boltz
>
>
>
> *From:* mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> *On
> Behalf Of *Ray Fantini via MRCA
> *Sent:* Tuesday, July 30, 2024 1:53 PM
> *To:* scottjohnson1 at cox.net; 'MilComm Guy' <m38inmaine at gmail.com>;
> MRCA at mailman.qth.net
> *Subject:* Re: [MRCA] Angry 5 Revival (change of subject, sort of)
>
>
>
> I have always referred to them as “Angry Five” don’t know if that’s
> correct or not. Much controversy around that radio, have been told they
> were used as “Gas Net warning “ receivers, as “Operational Net warning “ to
> broadcast they daily bombing targets and as entertainment receivers? Years
> ago I had one that I built a battery pack for and ran it for a long time
> just on D cells and a B battery.  Its fun also to have a radio who’s multi
> voltage power supply is just as big as the radio itself! Think that radio
> would be a good candidate for solid stating the vibrators and trying it
> that way.
>
> Think that it goes back to all those radios of the late forties and early
> fifties and would look good paired with a GRC-19 (T-195/R-392) set up but
> unlike all that other way obsolete by the seventies RT-67,68 or RT-70 stuff
> that receiver was still in service and somehow appears in MSC-31/32
> communications centers as a axillary receiver along with the VRC-12 stuff.
>
> It would look real good on the back of a M-38
>
>
>
> Ray F/KA3EKH
>
>
>
>
>
> *From:* mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> *On
> Behalf Of *scottjohnson1 at cox.net
> *Sent:* Tuesday, July 30, 2024 1:00 PM
> *To:* 'MilComm Guy' <m38inmaine at gmail.com>; MRCA at mailman.qth.net
> *Subject:* Re: [MRCA] Angry 5 Revival (change of subject, sort of)
>
>
>
>
>
> Not to pick nits but “angry” applied to AN/GRY- accessories, “Jerk”
> applied to AN/GRC-, and “prick” applied to AN/PRC-.
>
> Of course this was the Army, and I was AF, so I am prepared to take any
> and all heat for these statements.
>
> -pedantic Scott W7SVJ
>
>
>
>
>
> *From:* mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> *On
> Behalf Of *MilComm Guy
> *Sent:* Tuesday, July 30, 2024 9:38 AM
> *To:* MRCA at mailman.qth.net
> *Subject:* [MRCA] Angry 5 Revival
>
>
>
> I picked up this receiver at the spring Nearfest meet in NH, I thought it
> looked nifty and rolled the dice it might actually work.  I powered it up
> with 24v and after a brief pause it came to life, I tuned around and was
> listening to several stations, my joy was short lived, after 20 minutes of
> bliss a fuse popped.
>
>
>
> I asked a friend if he was willing to see what happened and the initial
> failure was a buffer capacitor on the main winding had shorted to ground,
> he said I was lucky it didn't take out the winding.  He ended up changing
> out multiple if not all capacitors that tested bad, how this even worked at
> all is amazing, the selenium components were also replaced.  After an
> alignment it now outperforms the stated rx sensitivity and it is working
> great.  The angry 5 now has a permanent home in the shack with the other
> green monsters, a great big thanks to my friend for all his hard work
> bringing this back to life.
>
> Naughty components.
>
>
>
> 73
>
> Mark
>
> K1HF
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