----- Original Message ----- From: "Bruce Robertson" <[email protected]> To: "Jeff Yanko" <[email protected]> Cc: "AMSAT-BB" <[email protected]> Sent: Friday, September 25, 2009 3:53 PM Subject: [amsat-bb] Re: Arrow antenna reconfiguration results - UPDATE
Jeff -- <snip> 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 _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
