[MRCA] MRC-55/GRC-14 Radio Set-Up: Anyone have any history on this unit ?

[Scott Johnson]

I think they are about a half generation newer than the GRC-19, which was in
development in the 1951 timeframe.  Given that it has transistors (a few),
It seems to be a rather poor response to the GRC-19.  It will make a few
more watts, and has dual receivers, but it weighs more than two complete
GRC-19s.  It is clear the GRC-19 was a winner, given its length of service,
and the fact that it eventually got solid state power supplies, servos, and
blower inverters to extend its useful life.

 

Scott V. Johnson W7SVJ

5111 E. Sharon Dr.

Scottsdale, AZ 85254-3636

H (602) 953-5779

C (480) 550-2358

scottjohnson1 at cox.net <mailto:scottjohnson1 at cox.net> 

scott.johnson at ieee.org <mailto:scott.johnson at ieee.org> 

 

From: mrca-bounces at mailman.qth.net [mailto:mrca-bounces at mailman.qth.net] On
Behalf Of DSP3
Sent: Friday, June 23, 2017 4:14 PM
To: mrca at mailman.qth.net
Subject: Re: [MRCA] MRC-55/GRC-14 Radio Set-Up: Anyone have any history on
this unit ?

 

I don't have an official history but the GRC-14 was the Marine Corps answer
to the Signal Corps GRC-19, both RATT rigs.  The receiver with the GRC-14
had the RTTY converter built in and supplied the loop current to the
terminal unit.  What looks like an S-meter is the tuning indicator for RTTY
signals.  The receiver is "fair" and pretty broad.  The whole mess is much
heavier than the GRC-19, I think and a bit more complicated.  I've had some
of the equipment, to include a couple of receivers.  They are all gone, now.
They are post Korea and appear to be about the same vintage as the GRC-19.
I never did see any real quantity of GRC-14 gear on the market or for sale
by DMRO or GSA, etc., just a few receivers.

Jeep - K3HVG

 

On 6/23/2017 1:20 PM, Doug Hensley wrote:

Anyone have any history on the MRC-55/GRC-14 heavy duty but mobile RATT
setup?  I have seen one standard military catalog picture showing the whole
thing rigged & fitted onto a Jeep vehicle.  Also have heard they were
installed in shelters.  But I know very little about quantity made, when
made, whether they are Korean Era only or were also used in Vite-Nahm ?  If
you know alot about these or have any stories, I for one would enjoy reading
about them.


Thank you,

 

Doug W5JV

 

 

 

 

 

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