I'm no expert on anything, but I'm under the impression that the radio equipment I've seen installed in naval combatants has some pretty hefty shock mounts to improve survival through torpedo and enemy naval cannon hits on a ship, not to mention firing of the ship's own large weapons.  I seem to recall that even the 5" guns hit you like a plank on board.  The ringing pulse of a hit throughout the steel structure is apparently pretty big, and those ATC and ART-13 transmitters have some fairly sensitive inner parts. 

There are some folks on MRCA who can interject some better facts than my meager impressions.
KC4TOS

On 8/30/2022 3:23 PM, Jeep Platt wrote:
Mike is, of course correct.  The TCZ nomenclature is strictly Navy.  I can only imagine that they may have been shipboard, or maybe shore stations at NAS facilities.  Yet, the only place I've seen them were at 3 different MARS stations.  All gleaned from DOD R&M and such, I assume.  I tried to use a TCZ mount kit on a shoeless ART-13 but guess I was missing something....  Ted, W3PWW had all the poop on the TCZ... but....
K3HVG


From: Michael Hanz <[email protected]>
Sent: Tuesday, August 30, 2022 1:01:54 PM
To: Jeep Platt <[email protected]>; wildbillk0ikp (null) <[email protected]>; Doran Platt <[email protected]>
Cc: William W. Busch via MRCA <[email protected]>
Subject: Re: [MRCA] My COL-52286 (T-47/ART-13) For Sale.
 
In addition to Jeep's description, I don't know of anywhere in the Signal Corps inventory that the TCZ was used.  It had that salt water Navy aroma, don'cha know. (running and ducking...)

In order for it to be used in an aircraft or ground vehicle it would have needed another pair of support plates underneath with appropriate rubber shock absorbers.  You can see the two ART-13 transmitters in the Enola Gay (one connected to the "liaison" antenna, the other to the "command" antenna) at https://aafradio.org/NASM/Enola_Avionics_Descriptions_-_Radio_Op.htm (showing that both have the standard MT-284/ART-13 shock mount with rubber pads separating the three levels of the mount.)  A better closeup of the MT-284 mount construction is at the top of  https://aafradio.org/garajmahal/ART-13_mounts.html

- Mike  KC4TOS

On 8/30/2022 10:25 AM, Jeep Platt wrote:
The TCZ was simply a ground mounted T-47. It sat on a 44" (nom) cabinet with an a.c. power supply. The mount was designed to support the transmitter in a fixed environment.  I saw several in USAF MARS stations...back when....
K3HVG


From: [email protected] <[email protected]> on behalf of wildbillk0ikp (null) via MRCA <[email protected]>
Sent: Tuesday, August 30, 2022 9:48:01 AM
To: Doran Platt <[email protected]>

Hi Jeep,  educate me.  What was a TCZ mount for?  We know the army used it in the Enola Gay.  Did they use it in vehicles installations?
Thanks, 73 Wild Bill, K0IKP

On Aug 30, 2022, at 06:08, Doran Platt <[email protected]> wrote:

Looks like the TCZ mount vice the aircraft shockmount version. Very nice unit!!
K3HVG