On Sep 11, 8:06 pm, "Philo" wrote:


I sincerely think you would have a lot more fun trying to clone a HW8.

There is no need to pursue much linearity in a cw transmitter ... unless you
try to build an almost unpractical one.

Granted, Philo...

Here's how the argument goes:
- goal: minimal part count + ability to put clean QRP signal anywhere
- DC drain no problem - class C not indispensable
- linear broadband keeps part count down and adds little spurs
- do all filtering after PA, if possible with multi-tuned tanks or
plug-in LPFs

However, my request is now moot.... I don know what possessed me when
I did my previous searches, but the aforesaid info CAN be found on the
web.

Here is one example:

http://www.qsl.net/ik4auy/article_4_english.htm

Plenty of usable ideas.

I am now experimenting with a simple 2-stage drive (2nd stage push-
pull) with plenty of negative feedback. May be enough to go on air.