[Milsurplus] MF on Navy ships 1960-1980

[W7QHO at aol.com]

Rob,

The SRT-14/15/16 transmitters were designed to operate into a 50 ohm load.   
Antenna tuning was accomplished by means of a pair of remotely controlled 
units (R-F TUNER TN-229/SRT and ANTENNA COUPLER CU-372/SRT) mounted topside at the 
base of a 35 ft whip antenna, .   These were sealed units pressurized with 
dry nitrogen.   There was also a LOAD ADJUSTING UNIT (LAU) CU-402/SRT mounted 
next to the transmitter.

Information from NAVSHIPS92121A, "Instruction Book for RADIO TRANSMITTING 
SETS AN/SRT-14, AN/SRT-14A, AN/SRT-15, AN/SRT-15A, AN/SRT-16 AND AN/SRT-16A" (26 
October1955).   For more see ER #96, APR. 1997.

The destroyer Casson Young up in Boston has a working SRT-15 installation 
(see the DVD I sent you) along with a TBL.   You might contact them for more 
information on how the newer equipment was integrated into the original WW2 hull. 

Dennis D. W7QHO
Glendale, CA

**************

Original message dated 3/9/08 7:43:23 AM, robandpj at earthlink.net writes:


> I am trying figure out what if any antenna was used at 500kc on the NEW 
> JERSEY in its later configuration.  There is a fan dipole that tunes down to 2Mc 
> but which I think would be inefficient at 500kc. 
> 
> Do later transmitters like SRT-15 use a matched output to a 50-ohm line, or 
> do they tune a reactive load like the older TAJ/TBL etc.?  If a 50-ohm 
> coaxial, maybe I would be looking for a coaxial feedline to a tuner abovedecks. 
> 
> I have a feeling that older antenna trunks of WWII vintage may have been 
> used to run the coaxial feedlines installed later.
> 
> The project at hand is a preliminary investigation into the feasibility of 
> setting up a TAJ on board.
> 
> 









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