[Milsurplus] More TCS questions

Mon, 08 Dec 2003 13:23:43 -0500

During WWII (the big one u know) I was on a LCT and our TCS (including loading 
coil) was on a wire antenna going to the masthead .. about 15 feet .. used it 
sailing from Guam to Iwo Jima .. later, on a LCI, and as I recall the TCS, 
with the loading coil fed a Signal Corps sectionalized antenna (MS-116,117,
118 ?) of about 15 feet.
Too many years to remember complete details.

On larger ships the shorter standard Navy whip was 25 feet (usually used as a 
receiving antenna)  ... standard was 35 feet (base insulator weighed 125 
pounds) .. aluminum and later (in the 60's) the 35 foot antennas were 
fiberglass ... later, only half (17.5 ft.) of antenna used when it was found 
superior for the 12-30 Mhz range.

Fred W4CHT

[email protected] wrote:
> Bob, Ray & Group,
> 
> 35' Whip vice 30'.
> 
> There was supposedly a shorter whip actually made for use with the TCS (can't 
> locate the nomenclature right now) but I don't know of anyone who ever 
> actually found one of them.  May have been made for use on landing craft, etc.  The 
> external loading coil would probably be required with it on both of the lower 
> bands.
> 
> The few ships that I was aboard in the 60's and 70's that still had a TCS 
> aboard mostly seemed to have it connected to an end fed wire.  I think that the 
> one on Valley Forge was about 60'-65' long and ran more vertical than 
> horizontal.  The only thing I ever recall the ships using the TCS for in those days was 
> Harbor Common (tug control) on some 2 MC freq that I can't remember.  But it 
> was on the tuning chart, complete with typical settings.
> 
> My TCS-14 loads a 45' horizontal wire on 75 with the external loading coil 
> switched out.  On 160, I have to switch it in.  I suspect that in the "old 
> days". the yard birds ran tuning tests and filled in the chart with settings for a 
> range of freqs.  Especially since what antenna (length) might be assigned 
> varied from ship to ship.  No two alike, even among the Essex Class.
> 
> In a message dated 12/8/2003 9:53:07 AM Central Standard Time, 
> [email protected] writes: 
> 
>>From what I have found the antenna tuner was designed with one purpose in 
>>mind and 
>>that was to use the transmitter with the standard 30 foot base fed vertical 
>>standard
>>aboard naval ships.  With all other antennas, it is anyones guess how the 
>>transmitter
>>will work with other type antennas.
>>
>>Bob, AF2HD/WW2LST op
>>
>>
>>At 10:39 AM 12/8/2003 -0500, Ray Fantini wrote:
>>
>>
>>>Have the TCS transmitter up and running with a new power supply, have
>>>used the radio on 160, 80 and 40 meters and have a couple questions.
>>>First, what's is the external antenna box used for? in operating the
>>>radio with a 40 meter inverted V the radio loads and operates fine 40
>>>and 80 meters, although I do not see much antenna current on 80 and only
>>>about a half amp on 40. The radio gets out well. If I use the external
>>
> 
> 73
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> <[email protected]> (Primary email)
> <[email protected]> (Backup email)
> 
> 
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