[ARC5] ARC5 Digest, Vol 83, Issue 25, Spitfire Radios

Thu Dec 23 10:58:40 EST 2010

In the Battle of Britain period, Spitfires (and, I assume, Hurricanes) were 
fitted with the TR1133 radio. This used the same style of controller, but 
fitted with a 12-pin oblong Jones connector. The TR1133 was then replaced 
with the TR1143 whose controller was fited with a circular W-connector. Then 
the SCR-522 was developed in the US to be a 'plug and play' replacement for 
the TR1143, so also used the British W-connectors. In the RAF the SCR-522 
became the TR5043, when they were fitted with ID plates giving both the US 
and British Air Ministry type numbers.
Andy

----- Original Messge From: <arc5-request at mailman.qth.net>
To: <arc5 at mailman.qth.net>
Sent: Thursday, December 23, 2010 2:41 PM
Subject: ARC5 Digest, Vol 83, Issue 25

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> Today's Topics:
>
>   1. Fwd: From Brent Potter: Jeppesen made this Hudson River
>      Approach Plate for Sully (Dan Arney)
>   2. Re: ARC-5 Alignment Question (Dennis Monticelli)
>   3. Re: SCR-522 (gordon white)
>   4. Re: SCR-522 (Military1944 at aol.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 22 Dec 2010 11:42:41 -0600
> From: Dan Arney <hankarn at pacbell.net>
> Subject: [ARC5] Fwd: From Brent Potter: Jeppesen made this Hudson
> River Approach Plate for Sully
> To: PAUL ARNEY <pgarney at embarqmail.com>, Gary Pannell
> <garpannell at gmail.com>, P BARRY <pbarryca at msn.com>,
> bobloce at pacbell.net, dvstanton at aol.com, davelevine77 at gmail.com,
> anchor at ec.rr.com, arc5 at mailman.qth.net
> Message-ID: <4D123891.8000202 at pacbell.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>
>
> -------- Original Message --------
> Subject: From Brent Potter: Jeppesen made this Hudson River Approach
> Plate for Sully
> Date: Mon, 20 Dec 2010 10:44:24 -0800
> From: John Marshall <eContact at laxqb.org>
>
>
>
>
>
>
>
> This is an actual chart that the Jeppesen Company made and
>
> presented to Sully and the crew of US Airways Flt 1549 as a gift.
>
> http://www.jeppesen.com/documents/corporate/news/US_Airways_Flight_1549_Sully_Skiles_Hudson_River_Miracle_Apch_Chart.pdf
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 22 Dec 2010 20:27:18 -0800
> From: Dennis Monticelli <dennis.monticelli at gmail.com>
> Subject: Re: [ARC5] ARC-5 Alignment Question
> To: jfor at quik.com
> Cc: arc5 at mailman.qth.net, milsurplus at mailman.qth.net
> Message-ID:
> <AANLkTimcLD2bv13Hjyfim8cMvNj8ZBZ5ReLfsd8bF+SG at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> FYI.  Whether or not you should re-tweak alignment when dropping in 
> another
> tube (glass or metal) depends upon the frequency of operation.  In a 455 
> KHz
> stage, I doubt it.  But higher frequencies could be affected by a small
> amount.  I tried three different 12K8 mixers in a BC-453B and the freq
> spread among them was about 1 to 2 KHz at the high end of the set's range.
> A BC-459 would experience much more potential shift.
>
> Dennis AE6C
>
> On Mon, Dec 20, 2010 at 3:19 PM, J. Forster <jfor at quik.com> wrote:
>
>> Hi all,
>>
>> First off, in the Subject line, please construe ARC-5 to include the
>> SCR-274-N.
>>
>> In my previous post, I mentioned "tubeless" RA-a\10 receivers and got to
>> wondering about retubing such a set.
>>
>> The ARC-5s often use metal tubes. Are the inter-electrode capacitance
>> variations of such tubes significantly better than glass tubes?
>>
>> Are either metal or glass tube characteristics sufficiently well
>> controlled so that a receiver could be fitted with off-the-shelf tubes 
>> and
>> perform w/in specs without alignment, after initial alignment?
>>
>> Best,
>>
>> -John
>>
>> ==============
>>
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>
> ------------------------------
>
> Message: 3
> Date: Thu, 23 Dec 2010 09:26:14 -0500
> From: gordon white <gewhite at crosslink.net>
> Subject: Re: [ARC5] SCR-522
> To: Dennis Monticelli <dennis.monticelli at gmail.com>
> Cc: arc5 at mailman.qth.net, jfor at quik.com, milsurplus at mailman.qth.net
> Message-ID: <4D135C06.2040008 at crosslink.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>    I am reading a recent book on the British Spitfire, which has a lot
> of cockpit photos. The only radio equipment shown is an oblong 5-button
> box (on/off plus four channels) on the left side of the pilot's seat.
> While I recall the SCR-522 unit itself (whatever the Brit numbers were)
> I don't recall the control. Does that sound like the control for it?
>
>  - Gordon White
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 23 Dec 2010 09:35:50 EST
> From: Military1944 at aol.com
> Subject: Re: [ARC5] SCR-522
> To: gewhite at crosslink.net
> Cc: arc5 at mailman.qth.net, milsurplus at mailman.qth.net
> Message-ID: <8c3ec.33945aa7.3a44b846 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
>
> In a message dated 23/12/2010 14:26:25 GMT Standard Time,
> gewhite at crosslink.net writes:
>
> I am reading a recent book on the British Spitfire, which has a lot
> of cockpit photos. The only radio equipment shown is an oblong 5-button
> box (on/off plus four channels) on the left side of the pilot's seat.
> While I recall the SCR-522 unit itself (whatever the Brit numbers were)
> I don't recall the control. Does that sound like the control for  it?
>
> - Gordon White
>
>
>
> ------------------------
>
> Yes Gordon that's the BC-602 control box for the  522.
>
> SCR 522 is the American version of the British  TR-1143 transceiver while
> the  SCR522 has its own British type number as  well, TR-5043.
>
> Ben.
>
>
> ------------------------------
>
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> End of ARC5 Digest, Vol 83, Issue 25
> ************************************
> 