[Boatanchors] Boatanchors Digest, Vol 85, Issue 32 / GF 11

[Henry Mei'l's]

I used an original, unmodified GF 11 receiver and transmitter combination in 
the 50's.
Nice gear -- looked a little like old time railway cars because
of the raised coil assembly protrusion. The transmitter earned my first and 
FCC citation because
I wasn't cautious enough about frequency placement!

Henry, OZ3O  N2NR

----- Original Message ----- 
From: <boatanchors-request at mailman.qth.net>
To: <boatanchors at mailman.qth.net>
Sent: Saturday, February 19, 2011 4:14 AM
Subject: Boatanchors Digest, Vol 85, Issue 32


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> Today's Topics:
>
>   1. Military transmitter GF 12 (Greg Mijal)
>   2. Re: [Milsurplus] Military transmitter GF 12 (David Stinson)
>   3. Re: [Milsurplus] Military transmitter GF 12 (WA5CAB at cs.com)
>   4. Re: Military transmitter GF 12 (Carl)
>   5. Parts (LARRY D GODEK)
>   6. Re: Parts (Richard Knoppow)
>   7. Re: Parts (Bruce)
>   8. Re: Military transmitter GF 12 (David Stinson)
>   9. Remember Saturday Halli 40 Meter Net! (Duane Fischer, W8DBF)
>  10. Re: Parts (Richard Knoppow)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 18 Feb 2011 15:30:44 -0500
> From: "Greg Mijal" <bluebirdtele at embarqmail.com>
> Subject: [Boatanchors] Military transmitter GF 12
> To: <milsurplus at mailman.qth.net>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <E246326AE49147878F083B10ECF1D58B at GregMijalPC>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi:
> Picked up a GF 12 transmitter from a friend of mine.  Has a 40m coil set 
> plugged into the side.
> Can anyone fill me in on what this was used for and does anyone have a 
> schematic or website to take a tour of the rig?
> Tnx
> Greg
> WA7LYO
> Kinston NC
>
> ------------------------------
>
> Message: 2
> Date: Fri, 18 Feb 2011 14:55:54 -0600
> From: "David Stinson" <arc5 at ix.netcom.com>
> Subject: Re: [Boatanchors] [Milsurplus] Military transmitter GF 12
> To: "ARC-5 List" <arc5 at mailman.qth.net>, <milsurplus at mailman.qth.net>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <1C5788390D2C44B7B0A6A89A1075C467 at DaddyPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>
> ----- Original Message ----- 
> From: "Greg Mijal" <bluebirdtele at embarqmail.com>
> Subject: [Milsurplus] Military transmitter GF 12
>
>
>> Hi:
>> Picked up a GF 12 transmitter from a friend of mine.  Has a 40m coil set
>> plugged into the side.
>> Can anyone fill me in on what this was used for and does anyone have a
>> schematic
>> or website to take a tour of the rig?
>
> The GF series of transmitters, the TX component of what is
> commonly called "GF/RU," have a long and excellent service history
> with the Navy and Marine Corps.  They do not get the respect
> they richly deserve.   Originally designed by Aircraft Radio Corp.
> and produced from 1932 until 1941, they saw service in many of
> the early WWII naval battles, including Midway (yes I have a photo),
> and were installed  in just about anything you can imagine.
> Besides aircraft they are documented in landing craft,
> trucks and even half-tracks.
> Give me until this evening to break-out the books and I'll post
> a diagram and some hook-up info tonight or tomorrow.
>
> 73 DE Dave AB5S
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 18 Feb 2011 16:50:43 EST
> From: WA5CAB at cs.com
> Subject: Re: [Boatanchors] [Milsurplus] Military transmitter GF 12
> To: bluebirdtele at embarqmail.com, milsurplus at mailman.qth.net
> Cc: boatanchors at mailman.qth.net
> Message-ID: <ee76f.6bbef765.3a9043b3 at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Further to what Dave wrote, the GF-12 was a 24 volt set, normally paired 
> up
> with the RU-17.  The sets that the Marines installed in the M3/M5 Stuart
> and the 75mm GMC (Halftrack) were actually GF-11/RU-16.  However, the only
> significant differences between the 11/16 and the 12/17 are the junction 
> boxes,
> dynamotors, antenna relays and the nameplates.  So if you were say to 
> build
> an AC operated supply to operate just the transmitter the filament voltage
> required is 12-14 volts, not 24-28.  Unless you include the big voltage
> dropping resistor that's in the 24 volt Junction Box.
>
> Also, if you want the complete manual, I sell a reprint.
>
> In a message dated 2/18/2011 2:30:28 PM Central Standard Time,
> bluebirdtele at embarqmail.com writes:
>> Hi:
>> Picked up a GF 12 transmitter from a friend of mine.  Has a 40m coil set
>> plugged into the side.
>> Can anyone fill me in on what this was used for and does anyone have a
>> schematic or website to take a tour of the rig?
>> Tnx
>> Greg
>> WA7LYO
>> Kinston NC
>>
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 18 Feb 2011 18:49:50 -0500
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [Boatanchors] Military transmitter GF 12
> To: "Greg Mijal" <bluebirdtele at embarqmail.com>,
> <milsurplus at mailman.qth.net>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <019401cbcfc6$8a4541e0$6601a8c0 at DAVES>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Heavy Navy aircraft, replaced by the ATC which then was renamed the 
> ART-13.
>
> Carl
> KM1H
>
>
> ----- Original Message ----- 
> From: "Greg Mijal" <bluebirdtele at embarqmail.com>
> To: <milsurplus at mailman.qth.net>
> Cc: <boatanchors at mailman.qth.net>
> Sent: Friday, February 18, 2011 3:30 PM
> Subject: [Boatanchors] Military transmitter GF 12
>
>
>> Hi:
>> Picked up a GF 12 transmitter from a friend of mine.  Has a 40m coil set
>> plugged into the side.
>> Can anyone fill me in on what this was used for and does anyone have a
>> schematic or website to take a tour of the rig?
>> Tnx
>> Greg
>> WA7LYO
>> Kinston NC
>> ______________________________________________________________
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>> ** For Assistance: dfischer at usol.com **
>>
>>
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>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 19 Feb 2011 00:27:57 +0000
> From: LARRY D GODEK <telegrapher at q.com>
> Subject: [Boatanchors] Parts
> To: <boatanchors at mailman.qth.net>
> Message-ID: <blu139-w748BB5642748A5F2A3A99A7D70 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> Digging around in one of my boxes of "junque" i found a couple of parts 
> that sound interesting.  One is a Fixed Condenser Type 260 by the C.D. 
> Tuska Co. Hartford, Conn..  Another is a "Formo-Densor Type J, MAX .0003 
> and Min .000025
>
> A third one is a Harvey-Wells Electronics crystal for 3105 kc that has 
> only one tab for connecting a wire or screw to.  Hmmmm.  Wonder which 
> piece of avionics that came from.
>
> Larry
> W0OGH
>
>
>
> ------------------------------
>
> Message: 6
> Date: Fri, 18 Feb 2011 17:53:23 -0800
> From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
> Subject: Re: [Boatanchors] Parts
> To: "LARRY D GODEK" <telegrapher at q.com>, <boatanchors at mailman.qth.net>
> Message-ID: <059EFBB505EF4AF89856B4CB14300720 at VALUED20606295>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>
> ----- Original Message ----- 
> From: "LARRY D GODEK" <telegrapher at q.com>
> To: <boatanchors at mailman.qth.net>
> Sent: Friday, February 18, 2011 4:27 PM
> Subject: [Boatanchors] Parts
>
>
>>
>> Digging around in one of my boxes of "junque" i found a
>> couple of parts that sound interesting.  One is a Fixed
>> Condenser Type 260 by the C.D. Tuska Co. Hartford, Conn..
>> Another is a "Formo-Densor Type J, MAX .0003 and Min
>> .000025
>>
>> A third one is a Harvey-Wells Electronics crystal for 3105
>> kc that has only one tab for connecting a wire or screw
>> to.  Hmmmm.  Wonder which piece of avionics that came
>> from.
>>
>> Larry
>> W0OGH
>
>     I've seen capacitors made by Tuska before but can't
> remember what it was in, probably an old Hallicrafters
> receiver but I am not sure. I have some old catalogues I can
> look in.
>     No idea about the other stuff.
>
>
> --
> Richard Knoppow
> Los Angeles
>WB6KBL
> dickburk at ix.netcom.com
>
>
>
> ------------------------------
>
> Message: 7
> Date: Fri, 18 Feb 2011 21:10:47 -0500
> From: Bruce <bsugarberg at core.com>
> Subject: Re: [Boatanchors] Parts
> To: boatanchors at mailman.qth.net
> Message-ID: <4D5F26A7.4080703 at core.com>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> Hello,
>
> Clarance Tuska was a cofounder of the American Radio Relay League.
> The CD Tuska Company built a number of radio receivers, and Tuska has
> quite a few patents.
>
> From a 1923 advertisement: "Tuska sets are built under the personal
> direction of C. D. Tuska, a nationally known radio pioneer and builder
> of fine apparatus. For a dozen years Mr. Tuska has been keenly critical
> of all radio parts and sets bearing his name. As a result, the Tuska
> seal is recognized as a guarantee of the most thorough New England
> craftsmanship - and there is no better." (Popular Science Monthly Sept.
> 1923 pp 99).
>
> Here is a 1923 Tuska Superdyne Type 228 receiver:
>
> <http://www.worthpoint.com/worthopedia/antique-1923-tuska-superdyne-type-228-tube-radio>
>
> Here is a Formo-Densor Type J:
>
> <http://cgi.ebay.co.uk/FORMO-DENSOR-TYPE-J-/170598884714>
>
> 73, Bruce WA8TNC
> ===================
> ----- Original Message -----
>> From: "LARRY D GODEK"<telegrapher at q.com>
>> To:<boatanchors at mailman.qth.net>
>> Sent: Friday, February 18, 2011 4:27 PM
>> Subject: [Boatanchors] Parts
>>
>>
>>> Digging around in one of my boxes of "junque" i found a
>>> couple of parts that sound interesting.  One is a Fixed
>>> Condenser Type 260 by the C.D. Tuska Co. Hartford, Conn..
>>> Another is a "Formo-Densor Type J", MAX .0003 and Min
>>> .000025
>>>
>>> A third one is a Harvey-Wells Electronics crystal for 3105
>>> kc that has only one tab for connecting a wire or screw
>>> to.  Hmmmm.  Wonder which piece of avionics that came
>>> from.
>>>
>>> Larry
>>> W0OGH
>>
>>
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 18 Feb 2011 20:56:48 -0600
> From: "David Stinson" <arc5 at ix.netcom.com>
> Subject: Re: [Boatanchors] Military transmitter GF 12
> To: <milsurplus at mailman.qth.net>
> Cc: boatanchors at mailman.qth.net
> Message-ID: <EEDF600ADED942EBBF6B312D9E6883ED at DaddyPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>
> ----- Original Message ----- 
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [Boatanchors] Military transmitter GF 12
>
>
>> Heavy Navy aircraft, replaced by the ATC which then was renamed the
>> ART-13.
>
> You're thinking of the GO or GP, Carl.
> GF is a Command Set.
>
>
>
> ------------------------------
>
> Message: 9
> Date: Fri, 18 Feb 2011 22:06:48 -0500
> From: "Duane Fischer, W8DBF" <dfischer at usol.com>
> Subject: [Boatanchors] Remember Saturday Halli 40 Meter Net!
> To: <boatanchors at mailman.qth.net>
> Message-ID: <011c01cbcfe2$3b904420$d154e8cc at hpdc5100mt>
> Content-Type: text/plain; format=flowed; charset="Windows-1252";
> reply-type=original
>
>
>
> Hi All,
>
> Please join us on Saturday February 19th for the Hallicrafters 40 meter 
> Net.
> Contrary to a rumor floating around the Ionosphere, the 40 meter Net is 
> NOT
> dead! The pathetic propagation the past years may have not allowed many
> former participants to hear the NCS and/or the ongoing traffic. Just the
> same, our backup NCS N8AZC, Mike Lopez, in central Ohio and I, W8DBF, 
> Duane
> Fischer, in Flint, Michigan, are still out there listening! So hang tough,
> keep calling and sooner or later one of us has got to hear you!
>
> Last Saturday Mike and I had the band to ourselves! The propagation was
> great and we chatted for over one hour! Too bad more of you were not 
> present
> to enjoy the propagation with us! So beat feet for the old Ham Shack
> tomorrow, fire up those vintage vacuum tube wonders (or the solid state
> technological marvel) and join us for some fun, facts, and probably a few
> fibs too!
>
> Somewhere I think that I heard there was supposed to be a world wide DX
> contest this weekend, but do not let that keep you away!
>
> Here is hoping to hear more of you on 7.280 MHZ LSB at 12:30 PM EST/1730
> UTC, for the pre-Net and at 1:00 PM EST, 1800 UTC, for the HHI 40 meter 
> Net
> proper. Be there or be a square wave dude!
>
> Duane, W8DBF
>
> Duane Fischer, W8DBF - WPE8CXO
> E-Mail: dfischer at usol.com
> Hallicrafters web site: www.w9wze.net
> HHRP web site: hhrp.w9wze.net
>
>
>
> ------------------------------
>
> Message: 10
> Date: Fri, 18 Feb 2011 19:14:05 -0800
> From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
> Subject: Re: [Boatanchors] Parts
> To: "Bruce" <bsugarberg at core.com>, <boatanchors at mailman.qth.net>
> Message-ID: <D1AB54B349F54DD5A65B6E9D3E97A94B at VALUED20606295>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>
> ----- Original Message ----- 
> From: "Bruce" <bsugarberg at core.com>
> To: <boatanchors at mailman.qth.net>
> Sent: Friday, February 18, 2011 6:10 PM
> Subject: Re: [Boatanchors] Parts
>
>
>> Hello,
>>
>> Clarance Tuska was a cofounder of the American Radio Relay
>> League.
>> The CD Tuska Company built a number of radio receivers,
>> and Tuska has
>> quite a few patents.
>>
>> From a 1923 advertisement: "Tuska sets are built under the
>> personal
>> direction of C. D. Tuska, a nationally known radio pioneer
>> and builder
>> of fine apparatus. For a dozen years Mr. Tuska has been
>> keenly critical
>> of all radio parts and sets bearing his name. As a result,
>> the Tuska
>> seal is recognized as a guarantee of the most thorough New
>> England
>> craftsmanship - and there is no better." (Popular Science
>> Monthly Sept.
>> 1923 pp 99).
>>
>> Here is a 1923 Tuska Superdyne Type 228 receiver:
>>
>> <http://www.worthpoint.com/worthopedia/antique-1923-tuska-superdyne-type-228-tube-radio>
>>
>> Here is a Formo-Densor Type J:
>>
>> <http://cgi.ebay.co.uk/FORMO-DENSOR-TYPE-J-/170598884714>
>>
>> 73, Bruce WA8TNC
>>
>    Extremely interesting stuff. My mind played a trick,
> I've seen ads for Tuska stuff in very old QST's but the
> penny didn't drop until you posted this. For some reason I
> had not connected Clarence Tuska of ARRL fame to Tuska the
> manufacturer although it should have been obvious.
> Definitely red-face department.
>    A search at Google Patents turned up 18 patents between
> 1919 and 1971 issued to Clarence D. Tuska, presumably all
> the same person. The latter ones were assigned to RCA. The
> earlier ones have him living in Hartford CT, the later ones
> at Philadelphia but there are some assigned to RCA while he
> was in Hartford so I think all were the same fellow.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com
>