To: rsgb_lf_group@blacksheep.org Date: Tue, 20 Jul 2004 02:19:03 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 X-Spam-Score: 1.0 (+) X-Spam-Report: autolearn=no,DATE_IN_PAST_12_24=0.385,HTML_20_30=0.474,HTML_MESSAGE=0.001,RCVD_IN_SORBS=0.1 Subject: LF: CLICK Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.9 required=5.0 tests=DATE_IN_PAST_12_24,HTML_20_30, HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit

I have been using a YXM modified design PA for years and todate no FETs zapped. I use 4 fets and run up to 800W out and have been higher but my PSU is the limiting factor. I use around 18 volts key down, solid PSU transformer. The current is heavy but not a problem, no ringing, buzzing etc.

I also have 2 Decca Jeeps (5501) they also run cool but I prefer to use my home built system. I have used old TV line cores to see what difference it makes and they work just as well as the 3c80 cores.

I prefer normal CW but have used QRS 60 by request for transatlantic, the FET'S and the LPF components run cool, barely warm. I do use a fan on the PA and another on the LPF.

Cannot understand why so many are having problems.

I do make a point of having the antenna properly resonant and matched on the required frequency. My antenna base loading inductor is around 0.3 mH for the Vertical.

There is a trick about how to wind the PA transformer, it seems I am the only one that knows about it, although having tried the conventional way it worked fine.

73 de G3KEV