[MRCG] RU / GF Radios
willi6 at starpower.net
willi6 at starpower.net
Sun Jul 28 13:34:04 EDT 2013
I believe a few other posters and linked the RU-## to the GF-## receiver and transmitter combinations, but will add the following.
In another world, long ago and far away (read "a small town high school in Oregon, mid 50s") the Algebra Teacher was a Ham Radio Operator and thus became the faculty adviser for the Ham Club.
In the back of the algebra class was a work bench, above which hung one of the giant demonstration model superhets; e.g., it was a wall poster about 4 feet by 6 feet with the components surfaced mounted - pointed out from the wall. It actually worked. (But! I digress!)
More important were several double door cabinets that covered the remainer of the wall. Apparently, in those days (after the war), schools could get all sorts of goodies in the name of science. In this case, the cabinets were stuffed from top to bottom with "black, wrinkle finish" radios!
While there were a few other things present, the main thing I recall was a bu nch of RU rcvrs and GF xmtrs (GF-11, I think?) and a ton of plug in units and control heads. Memory fades, but I don't recall seeing any interconnect cables or conne ctors which may have slowed down any use of the radios.
There was a BC-34 8 receiver and a large green transmitter that were brought to life on 75-Mtr AM and became the voice of the high school on the ham bands. Some years later, while helping a different teacher (physics) clean a store room, I came across one of the GF-11 transmitters on a shelf. He verified that it was one of the remnants of the orginal collection and that we were welcome to it for the club. By this time, we were a little smarter and had thrown some things together and managed to make a power supply. The remaining plug-in was for 40-Meters and we managed a few contacts before one of the tubes (837?) gave up the ghost.
I always thought it was a pretty neat little rig and probably deserved more "ham" attention than it got. When I did some research later, I only found two or three articles in the Ham Mags about conversions. The schematics did show up in the popular "Command Set" conversion manual (three volumes) series of the 60s.
73, Dave
Dave Williams - K7HMP/4
Stafford, Virginia
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Today's Topics:
1. RU Receiver Series Info and Parts Wanted (Mark J. Blair)
2. Re: [armyradios] RU Receiver Series Info and Parts Wanted
(Meir WF2U)
3. Re: [BoatAnchors] [armyradios] RU Receiver Series Info and
PartsWanted (aafradio)
----------------------------------------------------------------------
Message: 1
Date: Sat, 20 Jul 2013 13:53:51 -0700
From: "Mark J. Blair" <nf6x at nf6x.net>
To: ArmyRadios Group Group <armyradios at yahoogroups.com>, BoatAnchors
<boatanchors at theporch.com>, MRCG Mailing List List
<mrcg at mailman.qth.net>
Subject: [MRCG] RU Receiver Series Info and Parts Wanted
Message-ID: <9A4D295B-CBE5-429A-80E8-874FD96D0719 at nf6x.net>
Content-Type: text/plain; charset=us-ascii
I just got the winning bids on an RU-19 receiver, its dynamotor, and a heap of plug-in coil modules for it. I plan to pair it up with my recently-acquired GP-7 transmitter, as I've been told that the RU would be a suitable contemporary receiver for it.
I know very little about the RU series so far. I've emailed Robert Downs about manuals for it. I wonder if any of y'all might fill me in a bit more about it? I understand that there are different versions, as I've seen references to "RU-19", "RU-2", etc. How do they differ? Is an RU-19 "right" for my GP-7, or does it really matter?
I expect that I'll need to obtain control box(es), mating connectors, etc. to go with my receiver. So please let me know if y'all have any for sale or trade. I'm also looking for the control box(es) for my GP-7. My RU-19 appears to be coming with the small crank for local tuning, but it'd still be neat to get the proper coffee grinder control box for it.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
------------------------------
Message: 2
Date: Sat, 20 Jul 2013 22:09:40 -0400
From: "Meir WF2U" <wf2u at ws19ops.com>
To: <armyradios at yahoogroups.com>, "'BoatAnchors'"
<boatanchors at theporch.com>, "'MRCG Mailing List List'"
<mrcg at mailman.qth.net>
Subject: Re: [MRCG] [armyradios] RU Receiver Series Info and Parts
Wanted
Message-ID: <2ECCA814ACC8442E880973A1E98132E3 at MBDCONSULTING.LOCAL>
Content-Type: text/plain; charset="US-ASCII"
Mark,
Your best bet to get more info on the RU series receivers and accessories is
the ARC-5 mailing list, the home page is
http://mailman.qth.net/mailman/listinfo/arc5 and you can subscribe from
there. The Milsurplus list is good also, at
http://mailman.qth.net/mailman/listinfo/milsurplus .
Briefly, some RU series receivers were used (and the junction box,
dynamotor, etc) with 12 VDC power, and were used with the GF-* series
transmitters, so TX/RX control was provided. The RU-19 is a 28 VDC system
with no T/R switching option in the interconnections of the system. When
used with the GO-9, no T/R antenna relay box is needed because the GO-9 has
a built-in antenna relay.
I have a complete RU-19 set, with all the control boxes, all the possible
coil sets, some cables and plugs for the cables that are missing, and also
the dynamotor, "coffee grinder" remote tuning unit and the flexible shaft
for it. The main junction box is actually for 2 receivers, that's the way
the original system is set up, but I only have one. Hopefully I'll find
another one eventually. I intend to pair mine up with my GO-9 transmitter,
as it was used on the PBY Catalina - there are photos of the PBY radio
compartment on the Internet.
Good luck,
73, Meir WF2U
Landrum, SC
-----Original Message-----
From: armyradios at yahoogroups.com [mailto:armyradios at yahoogroups.com] On
Behalf Of Mark J. Blair
Sent: Saturday, July 20, 2013 4:54 PM
To: ArmyRadios Group Group; BoatAnchors; MRCG Mailing List List
Subject: [armyradios] RU Receiver Series Info and Parts Wanted
I just got the winning bids on an RU-19 receiver, its dynamotor, and a heap
of plug-in coil modules for it. I plan to pair it up with my
recently-acquired GP-7 transmitter, as I've been told that the RU would be a
suitable contemporary receiver for it.
I know very little about the RU series so far. I've emailed Robert Downs
about manuals for it. I wonder if any of y'all might fill me in a bit more
about it? I understand that there are different versions, as I've seen
references to "RU-19", "RU-2", etc. How do they differ? Is an RU-19 "right"
for my GP-7, or does it really matter?
I expect that I'll need to obtain control box(es), mating connectors, etc.
to go with my receiver. So please let me know if y'all have any for sale or
trade. I'm also looking for the control box(es) for my GP-7. My RU-19
appears to be coming with the small crank for local tuning, but it'd still
be neat to get the proper coffee grinder control box for it.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
------------------------------------
------------------------------
Message: 3
Date: Sun, 21 Jul 2013 07:36:23 -0400
From: aafradio <mike_25-z at aafradio.org>
To: ARC-5 <arc5 at mailman.qth.net>
Cc: 'BoatAnchors' <boatanchors at theporch.com>, 'MRCG Mailing List List'
<mrcg at mailman.qth.net>, "Milsurplus at mailman.qth.net"
<Milsurplus at mailman.qth.net>
Subject: Re: [MRCG] [BoatAnchors] [armyradios] RU Receiver Series Info
and PartsWanted
Message-ID: <51EBC7B7.80605 at aafradio.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Mark, I posted a matrix of various combinations of Navy transmitters and
receivers at http://aafradio.org/docs/1943-Navy-radio-gear.html
You can see that at least one aircraft, the SBD-3, used the combination
you have, so you're safe from the purists...:-)
73,
- Mike KC4TOS
On 7/20/2013 10:09 PM, Meir WF2U wrote:
> Your best bet to get more info on the RU series receivers and accessories is
> the ARC-5 mailing list. The Milsurplus list is good also.
>
> Briefly, some RU series receivers were used (and the junction box,
> dynamotor, etc) with 12 VDC power, and were used with the GF-* series
> transmitters, so TX/RX control was provided. The RU-19 is a 28 VDC system
> with no T/R switching option in the interconnections of the system. When
> used with the GO-9, no T/R antenna relay box is needed because the GO-9 has
> a built-in antenna relay.
>
> -----Original Message-----
> From: armyradios at yahoogroups.com [mailto:armyradios at yahoogroups.com] On
> Behalf Of Mark J. Blair
> Sent: Saturday, July 20, 2013 4:54 PM
> To: ArmyRadios Group Group; BoatAnchors; MRCG Mailing List List
> Subject: [armyradios] RU Receiver Series Info and Parts Wanted
>
> I just got the winning bids on an RU-19 receiver, its dynamotor, and a heap
> of plug-in coil modules for it. I plan to pair it up with my
> recently-acquired GP-7 transmitter, as I've been told that the RU would be a
> suitable contemporary receiver for it.
>
> I know very little about the RU series so far. I've emailed Robert Downs
> about manuals for it. I wonder if any of y'all might fill me in a bit more
> about it? I understand that there are different versions, as I've seen
> references to "RU-19", "RU-2", etc. How do they differ? Is an RU-19 "right"
> for my GP-7, or does it really matter?
------------------------------
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