On 5 Oct 2004 21:13:04 -0700, (I Am Not
George) wrote in :


www.telstar-electronics.com


......oh brother. Since when did 10 meters cover 26-29MHz?

Your amp is rated 180 watts RMS and 350 watts PEP? Why is this issue
so confusing, Brian? If the amp is rated for 350 watts PEP it's rating
for AM will be 87.5 watts RMS dead-key. So where do you get your
figure of 180 watts RMS?

Your confusion seems even worse when comparing AM, FM and "PEP". If
the input can take 20 watts PEP it can take 20 watts FM. Even if your
power dissipation can't handle a steady 20 watt carrier, it should at
least be able to handle more than an unmodulated AM carrier or you
couldn't use AM. Haven't you learned the basics YET?

And what's "compression"? If you overdrive an amp you get CLIPPING,
not compression. It may be hard-clipping (typical of solid-state amps
such as your's) or soft-clipping (more characteristic of tube amps),
but it's still clipping and it still causes harmonic distortion.

On that note, let's look at those distortion figures: -33 dB with 100
watts CW..... aw, Brian, haven't you learned yet that you are supposed
to do those tests under modulation? Otherwise they don't mean squat
(and those are pretty crappy numbers for an unmodulated carrier!). If
you modulate the carrier you can test it at your rated 350 watts. But
I don't think you want to do that. In fact.....

Did you ever look closely at your input/output graph? Do you know what
the word "linear" means? And didn't you notice how the graph starts
curving more sharply at about 10 watts input? That's an indication
that your amp is clipping; i.e, causing distortion. Now we know why
you didn't measure distortion above 100 watts..... because it's a
noisy critter!!!


Brian, your amp is a cheap hack, it sucks, and you are so ignorant
that you even provided the proof. Your amps will always suck until you
finally decide to sit down and educate yourself about RF electronics
from the beginning; i.e, starting with the basics. Maybe then you can
build a decent amp and capitalize on the -legal- amp market instead of
trying to prey on hapless CBers that have been misinformed by
voodoo-techs like yourself.






-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----