[AMPS] Another angle on cathode-matching ckts

km1h@juno.com km1h@juno.com
Mon, 15 Feb 1999 10:25:19 -0500




On Mon, 15 Feb 1999 10:02:16 -0000 Peter Chadwick
<Peter_Chadwick@mitel.com> writes:
>
>Carl says:
>
>>A modern xcvr has >40 dB harmonic attenuation. A good LP filter has 
>70+
>>dB attenuation at the 3rd harmonic
>
>The xcvr may well have, but the GG tube conducting for 180 degrees or 
>so
>will produce harmonic currents in its input.


True, but that still does nothing to explain why some input network
layouts are inefficient on just 10M and 15M.

73  Carl  KM1H


 
>
>
>73
>
>Peter G3RZP
>
>--
>FAQ on WWW:               http://www.contesting.com/ampfaq.html
>Submissions:              amps@contesting.com
>Administrative requests:  amps-REQUEST@contesting.com
>Problems:                 owner-amps@contesting.com
>Search:                   http://www.contesting.com/km9p/search.htm
>
>

___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]

--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm