Ed,
Your model number crosses to the newer part number: R-106G, a six helical resonator version. Try this link for further identification and modifications: http://www.repeater-builder.com/sinclair/r101gc/r101_6m_mods.pdf Jim _____ From: [email protected] [mailto:[email protected]] On Behalf Of Com/Rad Inc Sent: Saturday, September 26, 2009 8:15 AM To: [email protected] Subject: [Repeater-Builder] 6M Sinclair Duplexer We have a Sinclair 2H-30-3R6C duplexer which tops out at approxiamtely 51.8 Mhz on the high notch... Anyone ever create a "fix" to get this up another 1 or 1.5 Mhz ? This looks like a cavity shrinking exercise Ed Folta K9QPJ

