The Telewave TTPD-7644 BaseStation Duplexer is designedspecifically for the 763-869 MHzPublic Safety frequency band. FourBandpass / Band-Reject cavitiesutilize an exclusive Telewavecoupling technique to provide a truebandpass response, while rejectinga specified frequency band.

Maximum transmitter-to-receiverprotection is achieved across thefull transmitter and receiver bands,with very low insertion loss.

The TTPD-7644 is a compact, rackmounted duplexer on a 5.25" x19" panel, with a power rating of650 watts. Heavy duty materialsincluding 1/4" inch top and bottomplates add to the rugged design ofthis duplexer.

All connectors and tuners aresilver-plated, and beryllium copperfinger stock contactors assure longlife, high "Q" performance, andmechanical stability.

Solid copper semi-rigid cableand non-ferromagnetic materialsvirtually eliminate internal intermodgeneration.

A threaded Invar tuning rod andtemperature compensator providefrequency stability across the fulltemperature range. All cavity inputsare heavily grounded for greateststatic and lightning protection.

All duplexers are tuned andtested with customer-specifiedfrequencies prior to shipping.No further adjustments shouldbe required. The positive lockingmechanism makes field-tuningsimple if frequency changes arenecessary.