[Milsurplus] TCS-9 Output matching?

[Thomas Adams]

At 03:29 06-05-11, Roger Basford wrote:
>Hi Robert and Group,
>
>Just to say thanks to all who came through with suggestions about the
>TCS-9 loading.
>
>This morning, using my 66ft inverted "L" I tried a 2 gang 365pf variable
>cap to ground from the antenna terminal and that brought up a good
>output on 3575 kc, the vintage equipment CW frequency here. There was
>no-one about so I QSYed to 5260 kc and carefully set the '9 up against
>the frequency counter in the shack. Loaded pretty well there too. Heard
>G4ALD calling CQ and after a quick call he gave me 579 with a  bit of
>chirp on his homebrew 10 watt rig, path about 120 miles, so well pleased
>with that.
>
>73 all,
>
>Roger/G3VKM - Norfolk, England.

CONGRATULATIONS!!!    :o)


Re. the chirp; that seems a perpetual problem with the TCS.

With mine, everything is good on 160 and 80. I get a slight chirp on 
40, but it's acceptable.

On only one occasion have I fired it up on 30 metres. I sounded sort 
of ranchy to me (I have
my rig set up for a sidetone), but when I heard a Cuban calling CQ a 
few KHz up from me, I
answered him anyway.

Even tho it's a case of The Pot commenting upon The Kettle's 
incipient Negritude, you REALLY
KNOW that you have a chirp problem when a CUBAN operator complains about it!

BTW, I meant to mention...   I'm cheating a little bit with my TCS.

The PAs are rewired so that BOTH 1625s are in use in AM mode 
(overruled the filament
switch).

Also, for a bit more power...   my homebrewed power supply provides a 
PA and modulator
plate voltage of 550 VDC under load.

Finally...  I have to keep my bug in 1st gear when it's on the TCS. 
I'd say that the keying relay
follows pretty well to maybe 15 - 18 WPM, but it gets shaky from there.


Mr. T.   W9LBB