To: | Tom W8JI <w8ji@w8ji.com>, g3rzp@g3rzp.wanadoo.co.uk,amps@contesting.com |
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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 _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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