Mike, The Vertex DXU-B duplexer is a notch-only mobile duplexer that is designed to cover the 430-455 MHz band. Its insertion loss is 1.5 dB, and the notch depth is 85 dB at a 5 MHz split. It is rated to handle 40 watts.
If you have a network analyzer or a good spectrum analyzer, simply adjust the tuning screws on the low-pass side for maximum attenuation of the high frequency, and adjust the tuning screws on the high-pass side for maximum attenuation of the low frequency. Don't try to tune for minimum attenuation of the pass frequencies; the notches will be way off. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Antoine Sent: Friday, March 24, 2006 11:30 AM To: [email protected] Subject: [Repeater-Builder] VXR-5000 Anyone can tell me a simple way to tune a small 6 cavity duplexer on 448 - 443 for a VXR-5000 Vertex repeater, never done one before. It's a Vertex Model DXU "B" series duplexer that I purchase with the VXR-5000, this is the same repeater that I'm looking CSC CWID 51B information about, still can't find my manual to do the pinout, Thanks for all your help, Mike A N1KTD 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/
