A lot of discussion about "other lists" recently, but on an "other list"
recently I was apparently the only answer to this gentleman's question about
how the Q multiplier works. Question is was I even close to being correct?
TNX es 73,
Ron WD8SBB
<snip>
Hi Ron,
THANKS for the reply to my question. You were the lone response and so very
much appreciated. Your answer makes very good sense and I am glad
to know why and what I am tweeking on the 2-BQ !
Also have several B lines here and a Sherwood R4C which is absolutely awesome.
cu on the bands OM Jim
N5KY
<snip>
Jim,
On a very high level, a q multiplier is an amplifier that has positive
feedback. That feedback causes the signal to get "re-amplified". The positive
feedback is why if you "push" it, it howls, squeals, or in technical term goes
into oscillation. When the amp comes close to oscillation is also tends to
become very narrow in its amplification (aka looking for a single frequency to
"almost" oscillate on) and so also acts as a narrow band filter.
Hope that all makes a little sense.
Regards,
Ron WD8SBB
<snip>
Greetings to the group,
As I stare at the schematic for the Drake 2-B Q multiplier (the 2-BQ) I must
admit to not really understanding how and why it works. Work it sure does
.......but I could use a bit of education from anyone who is less clueless than
I seem to be !
in need of education Jim N5KY
<snip>
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