[Milsurplus] Connector: ATB or TCS? + 183 Update

robinson at tuberadio.com robinson at tuberadio.com
Thu Oct 28 20:02:00 EDT 2010 

Hi Dave,

Good stuff.
Do you have the correct dyno for the ATB?

Regards
Ray

> Date: Thu, 28 Oct 2010 07:37:04 -0500 (GMT-05:00)
> From: David Stinson <arc5 at ix.netcom.com>
> Subject: [Milsurplus] Connector: ATB or TCS? + 183 Update
> To: Milsurplus at mailman.qth.net, arc5 at mailman.qth.net
> Message-ID:
> 	<27650701.1288269424243.JavaMail.root at wamui-cynical.atl.sa.earthlink.net>
>
> Content-Type: text/plain; charset=UTF-8
>
> The transmitter connector for the TCS transmitter and
> the ATB/ARB set have near-identical inserts.
> I recently discovered that, over a decade ago, I had connected
> my TCS transmitter to its power supply with an original
> ATB cable.  Here's a photo so you can spot the differences:
>
> http://home.netcom.com/~arc5/ATBconnectors.jpg
>
> The TCS connnector's ring is fluted, with the fluting along
> the long axis of the connector.  The ATB connector has a
> double ring of knurling, with writing between the knurls.
> Some of the ATB/ARB connectors are actually marked "RCA"
> with an "SK-xxxx" stock number.  The ARB connector
> is keyed differently, but otherwise looks the same
> with the double-knurl.
>
> Here's the latest on the ATB/ARB set, including a short
> spline and RS-38 holder Mike Hanz kindly sent me.
> The angled riser for the control boxes was Mike's
> idea and I like it allot:
>
> http://home.netcom.com/~arc5/ATBARB1.jpg
>
> I have an extra ARB canvas cover, which I would trade to
> anyone who has an extra ATB or dynamotor cover.
>
> I'm remounting the SCR-183 to match the compact ATB/ARB set,
> and will be doing the same for the GF/RU later this winter.
> The base and angled riser are wood.  Mike Hanz reminded me
> that we need a good ground plane under our sets.
> For a ground plane, I laid down a matrix of aluminum ducting tape,
> connecting the strips electrically by folding-over the ends
> where they touch and sticking it down with a small piece of the tape.
> At the tape cross-over points, I folded a 1-inch piece
> of tape over and stuck it down to make the connection with
> another, overlaying piece of the tape.
> This might sound "cheesy," but remember that, in an aircraft,
> the connection between one piece of skin and another is pretty
> much the same.  It works very well.  Here's an "in process"
> photo.  I added two more "middle" strips after this:
>
> http://home.netcom.com/~arc5/183base.jpg
>
> Then painted it "Army Green."  To make connection,
> I just scrape away the paint and use a star washer.
> This is a "preliminary" fitting:
>
> http://home.netcom.com/~arc5/new-183.jpg
>
> Dyno and junction box go go on the back.
> The "coffee-grinder"  will mount on a panel
> at the top of the riser, next to the TX control box.
> This set is going to be a lot lighter than the ATB ;-).
> Haven't gotten much more done,
> but hope to get back to it this weekend.
>
> 73 Dave AB5S
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 28 Oct 2010 07:18:20 -0700 (PDT)
> From: "J. Forster" <jfor at quik.com>
> Subject: Re: [Milsurplus] UPX-7 airborna IFF interrogator
> To: "FERMI Ugo (FGA)" <ugo.fermi at fiat.com>
> Cc: "milsurplus at mailman.qth.net" <milsurplus at mailman.qth.net>
> Message-ID: <60739.12.6.201.2.1288275500.squirrel at popaccts.quikus.com>
> Content-Type: text/plain;charset=iso-8859-1
>
> For RADAR stuff, there is a Yahoo Group that's worth a try:
>
> Vintage-Military-RADAR
>
> Best,
>
> -John
>
> ==========
>
>
>> Hi radar buffs,
>>
>> I'm looking for info concerning a rather odd IFF apparatus: the AN/
>> UPX-7
>> airborne IFF interrogator.
>> According to the www.tpub.com<http://www.tpub.com> website, it was an
>> interrogator set used to provide checking facilities for the ubiquitous
>> Radar Identification Set AN/APX-6.
>> The main part of it was the RT-198/UPX-7 interrogator, which looks
>> nearly
>> identical to the RT-82/APX-6 transpondor.
>> I suspect that the RT-198 was actually an RT-82 modified in such a way
>> to
>> use its circuitry for generating standard double-pulse interrogations,
>> rather than generating replies.
>> Who knows about it?  Any schematic dwg on hand?
>> I would buy a copy of technical manual, if any available.
>>
>> Best 73's from Torino, Italy
>> Ugo, IW1FQG
>>
>> ______________________________________________________________
>> Milsurplus mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Milsurplus at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 28 Oct 2010 11:11:31 EDT
> From: WA5CAB at cs.com
> Subject: Re: [Milsurplus] [ARC5] Connector: ATB or TCS? + 183 Update
> To: Milsurplus at mailman.qth.net, arc5 at mailman.qth.net
> Message-ID: <a75d9.6114fa4e.39faeca3 at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> The TCS transmitter (which wasn't the only set besides ATB/ARB to use
> SK-C16) connector actually has a different backshell.  Collins used the
> AC&AN
> threaded backshells on both cable types (conduit and jacketed cable).
> Maybe
> because the early cables were flexible conduit type and when they started
> building cables with jacketed cable it was easier to add an AN3057-8 clamp
> than
> to mix in the saddle-bar backshells.  As to the knuling on the coupling
> nuts, I never have figured out why Cannon (who actually built the
> connectors)
> mixed four slightly different types into their production.  Except that
> postwar through about the 80's they only made the full-face straight
> knurl.
> Besides the two shown in the photo, I have also seen two-row type in
> straight
> knurl and "X" knurl.
>
> I'm not sure what the "SK" number means, but the RCA number referenced in
> the manuals is the "P-" one.  The first six digits ID the shell type and
> the
> dash-number the orientation.  The ATB/ARB used only two inserts between
> all
> of the connectors used with the set.  But with those two inserts they used
> different key orientations to make non-intermatable connectors.  The only
> other set I for sure recall seeing that done with is the AN/APN-1.  One of
> the
> ATB cables used the standard keying and would plug into the TCS
> transmitter.
>
> In a message dated 10/28/2010 7:37:07 AM Central Daylight Time,
> arc5 at ix.netcom.com writes:
>> The transmitter connector for the TCS transmitter and
>> the ATB/ARB set have near-identical inserts.
>> I recently discovered that, over a decade ago, I had connected
>> my TCS transmitter to its power supply with an original
>> ATB cable.  Here's a photo so you can spot the differences:
>>
>> http://home.netcom.com/~arc5/ATBconnectors.jpg
>>
>> The TCS connnector's ring is fluted, with the fluting along
>> the long axis of the connector.  The ATB connector has a
>> double ring of knurling, with writing between the knurls.
>> Some of the ATB/ARB connectors are actually marked "RCA"
>> with an "SK-xxxx" stock number.  The ARB connector
>> is keyed differently, but otherwise looks the same
>> with the double-knurl.
>>
>
> Robert & Susan Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
>
> ------------------------------
>
> ______________________________________________________________
> Milsurplus mailing list
> Home: http://mailman.qth.net/mailman/listinfo/milsurplus
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Milsurplus at mailman.qth.net
>
>
> End of Milsurplus Digest, Vol 78, Issue 40
> ******************************************
>

More information about the Milsurplus mailing list