[Amps] Designing the Cleanest Linear with RF Negative Feedback

Tom Cathey K1JJ at comcast.net
Sun Dec 18 15:31:49 EST 2005


Aw, you guys are brutal!

Here's what I REALLY look like:

http://home.comcast.net/~k1jj/wsb/media/254120/site1050.jpg


Marv, OK on the FT-1000D feed forward info. Interesting alternative. Though, 
changing around the PA in the 1000D would be a little beyond my confidence 
level unless I had a tested modification procedure. Besides, by making the 
big linear amp separate and low level in, I can then upgrade to a new 
transceiver someday and maintain the cleanliness, assuming its low level tap 
is clean... hopefully.

Let me know what you think of the GG linear chain I mentioned in the last 
post and I will procedure. I was thinking that link coupling between stages 
would give the required high impedance plate to 50 ohm cathode connections.

73,
Tom, K1JJ

----------------

> That's a cheap photoshop job. Here's what JJ really looks like.
>
> http://amfone.net/Amforum/index.php?action=dlattach;topic=6463.0;id=565



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