To: rsgb_lf_group@blacksheep.org Date: Fri, 7 Jan 2005 15:20:52 -0000 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-SPF-Result: relay.omnieng.net: 209.228.29.61 is neither permitted nor denied by domain of virgin.net X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=no,HTML_20_30=0.474,HTML_MESSAGE=0.001,RCVD_IN_SORBS=0.1 Subject: LF: VY1JA 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=0.5 required=5.0 tests=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

Hi J

The antenna that you describe is similar to mine and it should work well.

My system is suspended from a tower over 100 ft high and consists of 4 inv L antennas. Each L vertical section is 100 ft with the top section of each L 400 feet long. The 4 vertical drop wires are spaced out from the top of the tower about 4 feet and converge at the bottom about the same distance out from the tower. The 4 bottom ends connect to a 0,5 mH inductor wound with litz wire, and in series to ground with a small tapped inductor for 50 ohm matching to the coax from the RX/TX

This works well for me for both TX and RX.

I tap down the large inductor to resonate the antenna for 137 khz and tap the coax up from the cold ground end of the smaller inductor for a 50 ohm match.

As an alternative RX only antenna I have a 80 metre perimiter vertical loop parallel resonated for 137 and that also works well, optimum direction E/W.

Good luck with your system and I hope to have a QSO with you soon on normal CW is possible.

73 de Mal/G3KEV/IO94SH/SCARBOROUGH