[VHFcontesting] TS2000 QRPP

[paul rollinson]

Thanks to all for the comments off these two yahoo group pages.

I have located the original DEMI controller that takes care of the job nicely. Should be here tomorrow.

Out of all the suggestions that I received, the prize has to go to Malcolm G0MIC.

His solution was clean and innovation. I tip my hat to you.

"The easy way to do this is to apply some negative bias to the ALC line. I built 
up a little circuit using a 555 to generate a square wave that is then rectified 
by a couple of diodes to give a negative voltage that is then regulated by a 
zener diode and tapped down using a multi-turn potentiometer. The circuit runs 
continuously to avoid spikes in the power output. Works beutifully and you can 
still use the power control to fine tune the result if required."

I thought I'd share this with the group in the event they ran into the same issue.

73 to all and thanks again for the help,

Paul, KE1LI FN41



________________________________
From: paul rollinson <ke1li at sbcglobal.net>
To: vhfcontesting at contesting.com
Sent: Mon, January 18, 2010 1:34:18 PM
Subject: TS2000 QRPP


Hi Guys,

I'm trying to drive a 1296 Xvertr with my TS2000 but the lowest I can power the rig is 5W. Does anyone have any insight?

BTW..... I'll be on the bottom 4 (maybe 1296 if I can get up on the band) from FN41AU.

73 and lets's hope for some propagation.

Paul KE1LI