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Re: [Amps] *** SPAM *** Re: ÂPi-L Network

To: Tom W8JI <w8ji@w8ji.com>, g3rzp@g3rzp.wanadoo.co.uk,amps@contesting.com
Subject: Re: [Amps] *** SPAM *** Re: ÂPi-L Network
From: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
Reply-to: g3rzp@g3rzp.wanadoo.co.uk
Date: Fri, 30 Mar 2007 06:01:55 +0200 (CEST)
List-post: <mailto:amps@contesting.com>
Tom asked:
>How do you know they did it for harmonic suppression and not 
some other reason?<
It's known they were pi-L networks because in 2 cases the designer told me, in 
three other cases, they said so in the published conference papers, and in yet 
another two cases, the data sheet says they are pi-L networks.

In transmitters specified for load SWR of 2:1 max, what other reason would they 
have?
Two of the transmitters I'm thinking of had a number  of resistively loaded low 
VHF tuned circuits too, for parasitic suppression. They didn't have nichrome in 
them though....
73
Peter W6/G3RZP
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