>
>Come on Rich, use your head.
>
? "I'm trying to think but nuthin' happens". . .Curly
>The low pass system on the input of the amp virtually guaranties
>the rise time of any pulse is about the same as the rise time of the
>desired signal. That's very well known!
>
>As for the relay cathode return closure causing a transient, that
>assumption is silly beyond belief!
? Sparking contacts don't create transients?
>When the relay closes in the
>cathode, the bypass capacitors--filament transformer---filament
>choke---etc etc all slow the transition down.
? we are not talking about the bias contacts. We are talking
hotswitching the RF input contacts when a factory-stock 922 is used with
a high speed T/R transceiver. .
>The slope of the
>transient must be less than high audio frequencies after passing
>through all that stuff.
>
>I'm amazed you try to propagate such BS in order to explain
>something so easily understood.
>
>> >>This (VHF) ringing occurs whenever there
>> >>is a transient in anode-current. I contend that RF input contact arcing
>> >> (hotswitching) during relay closure will produce transients in
>> >>anode-current -- and that the resultant ringing in the anode circuit
>> >>will be fed back by the feedback C of the amplifier tube. .
>> >
>> >HOW?
>
>Good question, now look at Rich's reply......
>
>> ? A spark is reliable producer of wide-band feculence.
>
>As Rich is also!
>
? __________
>........
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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