[Milsurplus] Official Mod Described

[WA5CAB at cs.com]

Well as I said earlier this week, one common ID for ham hacks is four holes 
drilled for mounting the SO-239 but only two line up with the holes in the 
connector.  And as I mentioned  earlier, neither article says anything about 
replacing the Antenna post.  I might also suspect that the UHF connectors 
were used because they're a lot easier to work with than N.  Or maybe the 
Tender just happened to have some.  Or...  Of course the problem could also 
have been solved by the RMC telling the RM's that the next one who got tangled 
up in the !@#$% receiver lead would be restricted to the ship at the next 
port.  :-)

The TCS tuned down to 1.5 MC, not just to 3.5.  From the boxes of TCS 
crystals I have I know there must have been a fair amount of usage of the 1.5-3.0 
MC band.  Harbor Common in Long Beach, Pearl and Subic Bay in the late 60's 
were all what the RM's called "2-meggers".  And the antennas were usually 
short, from a 20' whip up to maybe a 35' end fed wire.  Plus I suspect a lot o
f RM's when tuning the transmitter, instead of turning the external loading 
coil to 0 (minimum inductance) and running the internal loading coil to 
max, then click the external to coil and go back to min on the internal, and so 
forth, which is the proper way to do it if you haven't a clue where the two 
controls need to be, would first turn the external coil up until an ammeter 
reading showed up and then fine tune it with the variable.  The transmitter 
really doesn't care.  And it's quicker.  But the receiver suffers. 

My TCS-14 is on a 45' end-fed almost horizontal wire.  The only time that 
the 47205 gets off of zero is for 160.

In a message dated 4/30/2010 3:31:57 PM Central Daylight Time, 
RAFANTINI at salisbury.edu writes: 
> >Nick wrote:
> >NAVSHIPS 900,200 CEMB has info on TBX freq range extension...
> >http://www.navy-radio.com/manuals/cemb09-t.pdf
> 
> Wow, who would have thought! Recall seeing something about the military 
> designs were perfect and modifications and changes were all hack jobs- 
> especially those done by Hams. 
> Liked the section on the TCS, especially the part about high rate of 
> failure due to operators turning the AF and RF gain beyond their limits and the 
> paragraph about how the antenna loading coil is useless. I have used TCS 
> sets on 40 and 80 and always wondered what's the point of the external coil. 
> The radio always loaded up and every time I would use the external coil the 
> receiver suffered, now I know it's just not my own stupidity.
> Thanks for the link,

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480