"Steve Litwins" <litwins@badsector.com> asks--
>Has anybody ever tried to tune an al-1200 or an lk-500z on 30 meters, 10
>Mhz? Easy guys...this is a legit question. I know abt the 200 w pwr limit
>etc. I use an MP. 100 watts on 30m leaves me in the pile sometimes for
>hours. It occurred to me that if I cld drive one of my amps on 30 meters, I
>cld maybe get 200 watts and that 3db might shorten the length of time spent
>in 30 meter piles. I have a very good antenna for 30 meters, several in
>fact, so other than investing in a routable array for 30m, I probably will
>not get too mny dbs extra from the antenna farm.
>There may be other suggestions here as well...so fire away guys, pse let me
>know what u think on this...73/dx
What's your input power?
QST had a couple of articles about a Class E amp using switching FETs that
was a perfect match for 30 m. The cool thing is -- it could be built outta
PC power supply junk with a little ingenuity. No need to hork around with
a potentially explosive tube amp.
Reference on request, extreme begging gets copies -- or gets me to scan 'em
and post. I have more than just the QST article.
Jim N6OTQ
And -- I will add that the articles indicated this might work for FM, and
the transistors might go to 30 MHz. You know how crappy a Class C amp
ounds on SSB or AM -- a Class E is even worse. Couple that with the
unfortunate fact that you can build these amps and connect them directly to
line voltage with just a single rectifier and a 40 uF cap for a power
supply -- the proper name should be something like "Darwin's Class E
Evolution in Action Amp."
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