[MRCA] MRCA Digest, Vol 145, Issue 20

Sat May 28 14:29:29 EDT 2016

That particular sub had two RBS receivers for HF and a RED for comms with aircraft with a TED xmtr. TCS was mainly for harbor comms with auxiliary vessels (tugs) . Rick K8PJQ RM1SS

Sent from my iPad

> On May 28, 2016, at 11:11 AM, mrca-request at mailman.qth.net wrote:
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> Today's Topics:
> 
>   1. Re: TCZ (WA5CAB at cs.com)
>   2. Re: TCZ & TCS (WA5CAB at cs.com)
>   3. TCS-12 Receiver/Transmitter for sale (Robert Sullivan)
>   4. Re: TCZ & TCS (Mike Morrow)
>   5. VRC-12 RT-246 (Ray Fantini)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 25 May 2016 18:53:34 -0400
> From: WA5CAB at cs.com
> To: mrca at mailman.qth.net
> Subject: Re: [MRCA] TCZ
> Message-ID: <4bd7dd.2269049c.447786ee at cs.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> Interesting.  What receiver was it usually paired up with?
> 
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
> 
> In a message dated 05/25/2016 10:05:01 AM Central Daylight Time, 
> n5912j at comcast.net writes: 
>> Re: TCZ
>> We had a TCZ aboard the Diesel sub Tench (SS-417) out of New London 
>> Squadron 2 in 1963 along with a TCS set and main transmitter TBL for HF. Rick 
>> K8PJQ RM1 SS
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> ------------------------------
> 
> Message: 2
> Date: Wed, 25 May 2016 18:59:54 -0400
> From: WA5CAB at cs.com
> To: mrca at mailman.qth.net
> Subject: Re: [MRCA] TCZ & TCS
> Message-ID: <4be491.67a70231.44778869 at cs.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> That also describes my TCS-14 (vertical), although the top shock mounts 
> aren't connected to the bulkhead.
> 
> And naah, they're all targets.  :-)
> 
> Robert Downs - Houston
> MNCM/CWO4
> wa5cab dot com (Web Store)
> MVPA 9480
> 
> In a message dated 05/25/2016 10:12:00 AM Central Daylight Time, 
> k4ncgva at gmail.com writes: 
>> Rick,
>> Was the TCS in a vertical rack with quad shock mounts or side-by-side on 
>> that old diesel boat? I have a vertical rack with matching SN's for my 
>> TCS-14/King Air
>> RMC (SW) yeah yeah yeah, the only things are subs and targets...
>> Thanks
>> Tom K4NCG
>> 
>> Sent from my iPad
>> 
>>> On May 25, 2016, at 11:04 AM, N5912J <n5912j at comcast.net> wrote:
>>> 
>>> Re: TCZ
>>> We had a TCZ aboard the Diesel sub Tench (SS-417) out of New London
>> Squadron 2 in 1963 along with a TCS set and main transmitter TBL for HF. Rick 
>> K8PJQ RM1 SS
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> ------------------------------
> 
> Message: 3
> Date: Wed, 25 May 2016 19:15:37 -0400
> From: Robert Sullivan <bobw0yva at gmail.com>
> To: mrca at mailman.qth.net
> Subject: [MRCA] TCS-12 Receiver/Transmitter for sale
> Message-ID:
>    <CALS0FX_4vLVen1vZhEr0J8BJSxFad+cNDFF2Rm7pigGL5Aqztg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> I have a TCS-12 rx and xmtr 'left over' from a restoration project. I'm
> selling 'for parts' since they are not totally functional, However, they
> are quite complete and in fact the transmitter is operational but no audio;
> I'm pretty sure the receiver has a defective output transformer. I do have
> the protective handles for the receiver. Make an offer and remember if
> shipping is required these are heavy! If interested let me know and I can
> send photos.
> 
> 73, Bob
> W?YVA
> http://www.isquare.com/personal_pages/ras-hardware.htm
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> ------------------------------
> 
> Message: 4
> Date: Wed, 25 May 2016 18:36:18 -0500 (GMT-05:00)
> From: Mike Morrow <kk5f at earthlink.net>
> To: mrca at mailman.qth.net
> Subject: Re: [MRCA] TCZ & TCS
> Message-ID:
>    <2620486.1464219379422.JavaMail.wam at mswamui-valley.atl.sa.earthlink.net>
>    
> Content-Type: text/plain; charset=UTF-8
> 
> Robert wrote:
> 
>> And naah, they're all targets.  :-)
>> 
>> Robert Downs - Houston
>> MNCM/CWO4
> 
> I didn't know you were a Mineman, Robert.  That's one of the USN's more unusual ratings.
> 
> I was on the US-made auxiliary (later coastal) minesweeper AMS-105 in 1973, in the North Sea.  But, it had been in service since 1953 with the Royal Netherlands Navy as Hr.Ms. Beemster M845.
>  http://onzevloot.weebly.com/hrms-beemster.html
> 
> It carried old British MF radiotelegraph gear, a Netherlands Navy HZO HF USB set (modern, somewhat similar to the RT-618/URC), and the USN UHF-AM TDZ transmitter and AN/URR-13 receiver.
> 
> Mike / KK5F
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Sat, 28 May 2016 15:11:09 +0000
> From: Ray Fantini <RAFANTINI at salisbury.edu>
> To: Military Surplus Mail List <milsurplus at mailman.qth.net>,
>    "MRCA at mailman.qth.net" <MRCA at mailman.qth.net>
> Subject: [MRCA] VRC-12 RT-246
> Message-ID: <1464448268964.3865 at salisbury.edu>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> What is the issue with trying to locate the schematics for the RT-246 (The push button VRC-12) transceiver? I have downloaded several different TM that are all in the six hundred pages with procedures, part list and exploded views but not a signal schematic. The RT-246 that I picked up in Dayton is suffering low sensitivity on all bands requiring 10 to 15 micro volts for full quieting and looking at the manuals it rates the receiver of being 0.5 micro volts for 10 Db SINAD so somehow I am missing about 20 Db of gain in the receiver. Think there is a protection circuit in the receivers front end and being that low sensitivity is the same on all bands suspect that is where the issue is, also noticed that the tone squelch is not working so want to also resolve that but not having a schematic is an issue.
> 
> Ray F/KA3EKH
> 
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> End of MRCA Digest, Vol 145, Issue 20
> *************************************