TPCD-1553 - Band-Pass Base Station Duplexer - 148-174 MHz
The Telewave TPCD-1553 allows simultaneous operation of a transmitter and receiver into a common antenna. This bandpass duplexer is ideal in frequency congested areas where protection is needed from surrounding transmitters, and where maximum transmitter sideband filtering is necessary. Because of its superior construction, this Telewave 5” cavity duplexer achieves greater rejection of transmitter noise and spurious radiation, providing excellent receiver protection.
The TPCD-1553 includes two bandpass cavities in the transmitter section. It is recommended when frequency spacing between the transmitter and receiver is 5 MHz or more.
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. Selectivity and insertion loss may be adjusted by rotating the calibrated connector loops. 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.