My CommShop for Windows program- which seems to produce pretty consistent and realistic results- suggests 80 dB of isolation for a 220 MHz repeater of 25 watts TX, 0.25 uV RX, and the normal 1.6 MHz split.
The 220 repeater my radio club owns uses a Telewave TPRD-2254 duplexer which works perfectly. I know that Telewave offers a good discount for Amateur Radio operators, and I'm happy to recommend their products. Here's the datasheet: http://www.telewave.com/pdf/TWDS-6026.pdf 73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of na6df Sent: Monday, April 03, 2006 6:16 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] 220 duplexer needed & other info.. OK, who makes a reasonably priced 220 duplexer? Or maybe you have one for sale? Also, just how much isolation is needed, as a minimum? I found a nice sinclair unit that is kinda pricey (used) but it only shows 70 dB of isolation. Say for grins I have a .25uV receiver, decent front end and 25 watts on a clean transmitter.. What do I need? Appreciate the help! (SKIP!! you got what I need?) thanks & 73, NA6DF Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
