TPRD-2254 - Pass-Reject Base Station Duplexer - 200-300 MHz
The Telewave TPRD-2254 allows simultaneous operation of a transmitter and receiver into a common antenna. This pass-reject duplexer has low insertion loss, and is ideal for systems with close frequency separation. The TPRD-2254 has two pass-reject cavities in the transmitter and receiver sections.
This duplexer is designed for transmitters and receivers with frequency spacing of 1 MHz or more. Selectivity and insertion loss may be adjusted by rotating the calibrated connector loops. Telewave duplexers have ¼”aluminum top plates which are fully welded to the aluminum outer conductor. Silver-plated tuners, beryllium copper finger stock contactors and threaded Invarrods assure maximum temperature stability, higher “Q”, and many years of trouble free operation.
All duplexers are tuned and tested with customer-specified frequencies prior to shipping. If frequency changes are required, the positive locking mechanism allows for easy field tuning by rotating the threaded Invar rod. The optional TBC-40 indoor cabinet completely encloses the duplexer, and protects it from dust, dirt and tampering. All connections are accessible from the top of the cabinet.