[Milsurplus] Milsurplus Digest, Vol 99, Issue 26

Thu Jul 19 00:49:40 EDT 2012

On 7/17/12, milsurplus-request at mailman.qth.net
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> Today's Topics:
>
>    1. WWII Fighters, Oct. 1944 (LONG) (David Stinson)
>    2. Re: WWII Fighters, Oct. 1944 (LONG) (J. Forster)
>    3. Modulator type 169 used with AGLT Mark I and AGLT Mark	III
>       (BenG4BXD)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 17 Jul 2012 01:49:47 -0500
> From: "David Stinson" <arc5 at ix.netcom.com>
> Subject: [Milsurplus] WWII Fighters, Oct. 1944 (LONG)
> To: <milsurplus at mailman.qth.net>,	"ARC-5 List" <arc5 at mailman.qth.net>
> Message-ID: <7F486D9E87AA463E92F9A8EE3501B146 at CompaqSR5710F>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
>
> Been trying to get this written for months so I can send this
> book off to a retired engineer friend.  He might enjoy reading
> about a bunch of fellow engineers noodling over the many
> problems concerning fighter aircraft in October of 1944:
>
> "Report of Joint Fighter Conference, NAS Patuxent River, MD
> 16-23 Oct. 1944,"  edited by Francis H. Dean and published
> by Schiffer Military History of Atglen, PA.  Copyright 1998.
> ISBN: 0-7643-0404-6
>
> Very interesting book if you want to see
> "how the sausage is made."
> A large group of aeronautical engineers with
> representatives from all branches of the U.S. military,
> Brits from the RAF, Royal Navy and
> Royal Naval Volunteer Reserve, from NACA
> and from every major aircraft manufacturer of the time.
> Charles Lindbergh was there,
> representing United Aircraft Corp.
>
> They had many fighters- both USAAC, USN and USMC, plus
> three Brit aircraft (Mosquito, Firefly and Seafire) and prototypes,
> including the first US jet, the P-59, available for evaluation flights.
> They also had a captured Japanese Zeke.
> For some reason, there were a lot of Corsair variants.
>
> There are some radio insights in the text, including this amusing
> passage on the trials and troubles of finding a good microphone:
>
> (USN Commander Ramsey:)
> ".... Are there any comments on throat mikes verses hand mikes
> or oxygen mikes?"
> (USMC Lieutenant Colonel Renner:)
> ".... Along the line of the throat mike verses the hand mike
> versus the mustache mike and of course the rest of them,
> our radio and electric people in the Bureau of Aeronautics
> spend about 10 billion dollars a year trying to figure up
> new gadgets and we are continually bombarded with
> a new type of mike that is absolutely the answer.
> We have at present on order 250,000 noise-canceling
> microphones that you wear under your nose like a mustache
> and, needless to say, when that order arrived and we sent
> them out for test, they found out that unless you wear
> a mustache, it irritated your upper lip.
> So it not only looks like one, but you need a mustache to wear it.
> This proved to be so uncomfortable and there was some kind
> of chemical in the mike that when you perspire a little,
> which is normal wearing this mike, it wasn't long before you
>  had a tremendous itching and you tried to push the mike away
> with your tongue, your teeth, etc. and strange noises
> were uttered during all speeches.
> Don't let that worry you, because the same brainstorms
> that figured this one up have a better one...."
>
> There is also a discussion of how to get more armor
> protection for the pilot.  Placing the radio directly behind
> him to take the bullets was suggested.
> There is a good discussion of the various Radar equipment
> then in use during the fourth meeting.
>
> The best "radio" data comes from cockpit detail photos
> and from flight data evaluation cards which listed
> the types of radios installed.  Ironically, the Brit aircraft
> are all using 3105 HF.   Tell you one about getting old:
> a few days ago, I came across another reference that
> explained why the Brit aircraft here were using HF,
> and I thought: "Oh, so that's why!"  I started to write
> it down, when Life interfered again (phone, etc.).
> Now I can't remember what it was or where I found it,
> blast it..... grumble.  I'm probably find it again in
> six or ten months.
>
> All the USAAC aircraft were outfited with SCR-522,
> save the P-59 which had SCR-274N installed.
> The USN aircraft had a mix of HF/VHF,
> some with HF frequencies selected for use.
> Below is a table of the data compiled from the book.
>
> I hope this will be of some interest to you.
> If you'd enjoy reading how all the little problems from
> the right colors to use on the panels (we were just
> discussing that) to how to keep the cockpit warm/cool etc.,
> I recommend the book.
>
> 73 DE Dave AB5S
>
> RAF "Firefly":
> ATA/ARA with British IFF
> RAF Seafire:
> GF/RU
>
> RAF Mosquito:
> Bendix? (No data card.
> Cockpit photo shows Bendix box).
>
> P-63A:
> SCR-522, IFF
>
> P-61B:
> SCR-522, Detrola Range, SCR-720& -729
>
> YP-59 Jet:
> 3RX / 2TX SCR-274N, IFF
>
> P-51D:
> SCR-522, Detrola Range, IFF, throat mic
>
> P-47M:
> SCR-522, Detrola Range, throat mic
>
> P-47D:
> SCR-522, Detrola Range, IFF, throat mic.
>
> P-38L:
> SCR-522, Detrola Range, throat mic.
>
> F2G Super Corsair:
> ARC-5 HF/VHF, ABA, ABX
>
> XF2G-1:
> All controls 6-inch console mount.
> AN/ARC-5 VHF, Two-RX Mixer panel for "HF" and "VHF,"
> VHF selected. AN/ARR-2 control, C-125/ARC-5 RX control
> with R-23 dial, RS-38 hand mic.
>
> FG-1 Corsair:
> ATA/ARA, ZB-1, ABK-1
>
> FG-1 Corsair:
> AN/ARC-5 HF/VHF C-30, HF TX-1 selected,
> C-38 RX control box for HF/VHF RX plus ARR-2,
> "HF Receiver" selected, C-26/ARC-5 single RX
> control box with R-23 dial, RS-38 mic.
>
> FG-1A Corsair:
>  AN/ARC-5 HF/VHF C-30, HF TX-1 selected,
> C-38 RX control box for HF/VHF RX plus ARR-2,
> C-26/ARC-5 single RX control box with R-23 dial.
>
> F4U: Vaught Corsair:
> ATA/ARA, ZB-1, ABK-1
>
> XF8F Bearcat:
> AN/ARC-1, AN/ARR-2,
> AN/APX-1, BC-1206
>
> F7F Tigercat:
> AN/ARC-5 HF/VHF, AN/ARR-2,
> AN/APS-6,  AN/APN-1, AN/APS-2
>
> F6F Hellcat:
> C-38/ARC-5 RX control box,
> C-30/ARC-5 TX control box with HF TX-1 selected,
> C-26/ARC-5 Rx control box with R-23 dial,
> AN/APX-1, AN/ARR-2, RS-38 hand mic.
>
> XF4U-4 Corsair (cockpit photo):
> All controls 6-inch console mount.
> AN/ARC-5 VHF, Two-RX Mixer panel for "HF" and "VHF,"
> VHF selected. AN/ARR-2 control, C-125/ARC-5 RX control
> with R-23 dial, RS-38 hand mic.
>
> FM-2 Wildcat:
>  AN/ARC-1, AN/ARR-2, BC-1206, RS-32 mic.
>
> Captured Japanese "Zeke":
> GF/RU
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 17 Jul 2012 01:02:41 -0700 (PDT)
> From: "J. Forster" <jfor at quikus.com>
> Subject: Re: [Milsurplus] WWII Fighters, Oct. 1944 (LONG)
> To: "David Stinson" <arc5 at ix.netcom.com>
> Cc: ARC-5 List <arc5 at mailman.qth.net>, milsurplus at mailman.qth.net
> Message-ID: <50252.12.6.201.2.1342512161.squirrel at popaccts.quikus.com>
> Content-Type: text/plain;charset=iso-8859-1
>
> This could be why the RAF/RCAF throat mikes I've seen were covered with
> chamois leather, the same as the WS 19 Canadian headgear. Chamois remains
> very comfortable, even after prolonged contact.
>
> Best,
>
> -John
>
> ===============
>
>
> [SNIP}
>
>> We have at present on order 250,000 noise-canceling
>> microphones that you wear under your nose like a mustache
>> and, needless to say, when that order arrived and we sent
>> them out for test, they found out that unless you wear
>> a mustache, it irritated your upper lip.
>> So it not only looks like one, but you need a mustache to wear it.
>> This proved to be so uncomfortable and there was some kind
>> of chemical in the mike that when you perspire a little,
>> which is normal wearing this mike, it wasn't long before you
>>  had a tremendous itching and you tried to push the mike away
>> with your tongue, your teeth, etc. and strange noises
>> were uttered during all speeches.
>
> [snip]
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 17 Jul 2012 09:00:08 -0400 (EDT)
> From: BenG4BXD <military1944 at aol.com>
> Subject: [Milsurplus] Modulator type 169 used with AGLT Mark I and
> 	AGLT Mark	III
> To: milsurplus at mailman.qth.net
> Message-ID: <8CF32333A26815D-29C8-150E3 at webmail-d140.sysops.aol.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> Modulator type 169
>
> used with AGLT Mark I and AGLT Mark III
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> RAF designation	ARI 5559
> Main items	Transmitter/Receiver TR 3548
> Receiver R3547 (or 3584)
> Indicator type 217  Switch unit type 221, 226
> Control unit 488
> Remarks	The scanner is fixed to turret and linked mechanically to the
> guns. Equipment uses a Gyro Gun Sight.
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> Would anyone have the circuit of this modulator unit?
> Just found one in fair shape, unlikely ever to fire it up but would be
> interesting to see a circuit diagram etc.
>
>
> cheers, Ben G4BXD
> Military Wireless Museum
>
>
> ------------------------------
>
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> End of Milsurplus Digest, Vol 99, Issue 26
> ******************************************
>