TX RX Systems Vari-notch UHF Duplexer Start Price USD 69.00 Current Price USD 180.49 Time Left - Bid Count 6 Buy It Now Price - Reserve Price - Start Time Sunday, November 16, 2008 End Time Sunday, November 23, 2008 Location Waterford, VA See more about 'TX RX Systems Vari-notch UHF Duplexer' Description Here is a TXRX Systems Inc, model 28-69-06A Vari-Notch UHF Rack mount station Duplexer.  From the catalogue, it says that the Vari-notch combines the low loss oand close frequency spacing of notch filters, with the broad isolation and selective pass characteristics of band pass filters. The spec's for this one are:  470-512 (though you can tune them a little lower), 3 mHz min. freq. separation, 250 watt max input, 1.25 db insertion loss, 86 db isolation per channel, 60 db isolation between channels.  Has both coarse and fine tuning controls on each can.  We've used a lot of these, and they work very well.  This one is just an extra we don't need. Winner to pay actual shipping costs (12 lbs from zip 20197).  All legal forms of payment accepted. Thank you very much for looking! Place a Bid!