----- Original Message ----- From: "Bruce Robertson" ve9qrp@gmail.com To: "Jeff Yanko" wb3jfs@cox.net Cc: "AMSAT-BB" amsat-bb@amsat.org Sent: Friday, September 25, 2009 3:53 PM Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Jeff --
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2. If I'm correct, your replacement duplexer is rather larger than the one it is replacing. It would be a great topic for a Journal article if someone with the necessary equipment and expertise were to design a replacement with less loss.
73, Bruce VE9QRP
Hi Bruce, VE9QRP
See QEX March/April 2002 page 47 "A Low-Loss VHF/UHF Diplexer" by Pavel Zanek OK1DNZ Loss = 0.15 dB at VHF and 0.40 dB at UHF Insulation VHF/UHF = 70 dB Max RF power at VHF or UHF or VHF/UHF = 100 watt CW at 25°
73" de
i8CVS Domenico