Well Bob, all I can say is that Im flexible in the final design. I mentioned
those tubes and voltages since that was what I have on and and I'm trying to
stuff it all in one rack. However if I go with two supplies I suppose I can
use stacks of electrolytics to save space as well as get the C up and save
on choke size. Dunno, I havent run the math yet but I have a bunch of
handbooks and engineering manuals from the 30's and 40's to keep me company.
Its a relearning process as well as incorporate some newer ideas Ive picked
up over the past few months by doing a lot of Internet reading.
At least I have a full array of test equipment this time around to minimize
the guesswork.
Carl
KM1H
.
----- Original Message -----
From: "rbethman" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio in the Amateur Service"
<[email protected]>
Sent: Tuesday, November 13, 2007 2:58 PM
Subject: Re: [AMRadio] Re:Modulator Plate Voltage
Carl,
You are "attempting" a battle of wits against the UNARMED.
Geoff and a couple of others have "their OWN idea" as to what constitutes
a GOOD radio!
You and I seem to be in the minority.
I just use "old tanks" such as the BC-610s. At least they were built with
the necessary iron to get the job done.
Granted, they MUST be run correctly, BUT any radio must be run properly or
issues develop. The pair of 100THs drive the audio through the 250TH very
well.
Keep up the GOOD fight!
Bob - N0DGN
jeremy-ca wrote:
What do you mean by well above? If the RF deck is at 2250 where would you
want the modulator to be?
Im in the process of building a pair of 813's with 810's audio and have
one big single PS that can get up to 3KVC@ 1A. How much can 810's be
pushed in voltage or should I go to 572B's or even 250T's?
Since Ive been unable to find a big mod xfmr so far the audio section is
still up in the air and flexible.
Carl
KM1H
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