[Central-Electronics] 100V AM troubles

[Dennis Petrich]

Also,

Each band has plug-in bandpass coils and the banana jacks on each can can
get dirty over time.  Reseating these cans is a good idea.  They are under
the scope tube.

Dennis, k0eoo

-----Original Message-----
From: central-electronics-bounces at mailman.qth.net
[mailto:central-electronics-bounces at mailman.qth.net]On Behalf Of Todd,
KA1KAQ
Sent: Tuesday, April 18, 2006 2:46 PM
To: Bob Sullivan
Cc: central-electronics at mailman.qth.net
Subject: Re: [Central-Electronics] 100V AM troubles


On 4/18/06, Bob Sullivan <robert at isquare.com> wrote:
> I have a 100V that is working perfectly except for AM where there is only
> very little modulation. I know AM is generated by 'unbalancing' the
> balanced modulator but I'll be darned if I can find the problem. Has
anyone
> had this AM problem? Any troubleshooting suggestions?

Bob -

Not specifically 'just' AM, but on the 200V I had a lot of trouble
with low and no output on several bands, perfect output on others. It
was that pesky bandswitch, and a quick cleaning helped, but didn't
completely cure it. I wonder if your mode switch might be suffering
the same condition? No AM on all bands?

~ Todd  KA1KAQ
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