[AMRadio] DX-100B, output falls off gradually

[Warren Elly]

replace the caps...
I have a dx-100 that the previous owner put a buffer stage in... boosted grid current
and eliminated decay
73, Warren 
W1GUD
On Nov 19, 2011, at 7:44 PM, L L bahr wrote:

> Would you think maybe the energy stored in the filter caps and choke might have something to do with this?
> 
> Lee, w0vt
> 
> ----- Original Message -----
> From: "Rick Poole" <wa1rkt at arrl.net>
> To: amradio at mailman.qth.net
> Sent: Saturday, November 19, 2011 2:15:01 PM
> Subject: [AMRadio] DX-100B, output falls off gradually
> 
> 
> Well, this is interesting...  Running some tests on my DX-100B into a 
> monitor scope and dummy load, I find that in AM mode, when I turn off 
> the Plate switch, the RF output as shown on the scope falls off 
> gradually over a period of about 1 second rather than dropping immediately.
> 
> Obviously, after I get my TR relay built and in line and hook up the 
> receiver, it's not going to be good if the TR relay drops out while 
> output power is still falling.
> 
> Any idea what causes this?  Is this a known problem with a known fix?
> 
> Rick WA1RKT
> 
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