>
>
>----- Original Message -----
>From: Rich Measures <measures@vc.net>
>To: Doug Person <w4dxv@ibm.net>; amps <amps@contesting.com>
>Sent: Friday, June 11, 1999 9:41 AM
>Subject: Re: [AMPS] Finally - a real amp
>
>
>Rich,
>
>That seems quite a bit less than what the manual suggests. However, the
>reduced power would hardly be noticable to anyone.
? I have heard an AL80 driven by 100W. The splatter was noticeable to
everyone in the vicinity.
>. I wonder what the
>affects of SSB would be rather than full carrier. If I tune up the amp
>using no more than the 400ma plate current and 65 watts drive, would pushing
>the power to 100 watts PEP input during normal SSB operations result in
>additional stress on the 3-500z, or perhaps increase distortion?
? No additional stress on tube. Additional stress on stations trying to
communicate on adjacent frequencies. Mo' drive is not always mo' betta.
>It seems
>to me that SSB is vastly less stressful on components over continuous
>carrier because it is largely made up of fast transients.
>
? true
>Now that I've gotton your input, I'm sorry to report that while tuning the
>AL-80A on 17 meters with 500ma ip and 150 ma of ig, A somewhat loud and most
>unpleasant noise ocurred within the amp after which there was no current
>indicated for either ig or ip. Did I fry the tube?
>
? You need a high-pot. to find out if the filament helices were bent
during the loud event.
- later, Doug
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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