In a message dated 9/22/2008 10:41:01 AM Central Daylight Time, satkins@inetdesign.org writes:
Subj: [amsat-bb] Duplexer for Sats Date:9/22/2008 10:41:01 AM Central Daylight Time From:satkins@inetdesign.org To:amsat-bb@amsat.org Received from Internet:
Hello everyone. I've worked AO-51 a few times so I'm not a total newbie. Just joined the list here to ask about building my own duplexer for working the sats. Awhile ago I found a page that described how to build one using a pencil to wind the inductors. It was a really small duplexer using RG-174 and SMC connectors. Does anyone know where I might find this web page? Or have instructions for building a duplexer?
Thanks
Stephen Atkins VE6CPU _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
Stephen,
Check this out: http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf
A duplexer is built as part of the antenna combination, but could be done separately if necessary. Any 50 ohm coax and connectors could be used. This one does feature inductors wound on a pencil.
73 - Keith, W5IU