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

[Gary Schafer]

A better question might be "were any of the power supply filter capacitors
changed to greater values than the originals"?

73
Gary  K4FMX

> -----Original Message-----
> From: amradio-bounces at mailman.qth.net [mailto:amradio-
> bounces at mailman.qth.net] On Behalf Of L L bahr
> Sent: Saturday, November 19, 2011 7:45 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] DX-100B, output falls off gradually
> 
> 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
> 
> ______________________________________________________________
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives: http://www.mail-
> archive.com/amradio at mailman.qth.net/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio at mailman.qth.net
> To unsubscribe, send an email to amradio-request at mailman.qth.net with
> the word unsubscribe in the message body.
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives: http://www.mail-
> archive.com/amradio at mailman.qth.net/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio at mailman.qth.net
> To unsubscribe, send an email to amradio-request at mailman.qth.net with
> the word unsubscribe in the message body.
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html