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Re: Topband: Anyone have a boat load of J-310s?

To: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Subject: Re: Topband: Anyone have a boat load of J-310s?
From: "Andy Ikin" <andrew.ikin@btopenworld.com>
Date: Mon, 26 Aug 2013 11:28:40 +0100
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Charlie wrote on Aug. 26.

"Your preamp sounds very interesting!  It must be fairly elaborate, if it
uses 8 of the J309 FETS! I'd be interested in the circuit!"


Charlie, I don't disclose circuit diagrams for commercial reasons. However the design is a push-pull using 4 fets in parallel to increase the gm and reduce the channel resistance, hence lower the noise.

73

Andrew G8LUG



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