|[AMRadio] Low modulation |
hbco2 at sbcglobal.net
Mon Feb 19 20:14:40 EST 2007
I notice from the schematic, that there is also a tertiary winding which is
fed to the the driver stage. Seems a long shot, but could it be out of
Also, what are you using to measure the capacitor. A digital capacitance
meter will mask a poor power factor. In other words, the cap could still be
open. Can you substitute another?
----- Original Message -----
From: SBJohnston at aol.com
To: amradio at mailman.qth.net
Sent: Monday, February 19, 2007 3:38 PM
Subject: Re: [AMRadio] Low modulation
DOXEMF at aol.com writes:
> Mod Reactor shorted?
Ohms-out OK on a Simpson 260, but perhaps a problem under higher voltage?
> The cap to ground off the bottom of the Mod secondary good?
It measures the expected 4 uF value.
>Does that thing use feedback?
Yes, and I've tried it with the feedback ladder disconnected - no
>How about running solid tone for maybe five minutes.
>And then look for something that's overly warm.
Good thought - thanks.
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