Base Station

The Telewave TPRD-4544/4744 Base Station Duplexers provide highperformance with an innovative design. By using two TPRC-4504 or 4704Pass / Reject cavities in the transmitter and re ceiv er path, theseduplexers provide maximum TX to RX protection in the most severe RFenvironments.

Telewave TPRD-4554 duplexers allow simultaneous operation of atransmitter and receiver into a common antenna. These pass-rejectduplexers are ideal for systems with very close frequency spacing of1 MHz or more.
The Telewave TPRD-4554 has two 3/4 -wave pass-reject cavities in the transmitter and receiver sections. Because of their superior construction, these Telewave 5" cavity duplexers achieve greater rejection of transmitter noise and spurious radiation, providing excellent receiver protection.Telewave duplexers have 1/4" aluminum top plates which are fully welded to the aluminum outer conductor. Silver-plated tuners, beryllium copper finger stock contactors and threaded Invar rods assure maximum temperature stability, higher "Q", and many years of trouble freeoperation.Selectivity and insertion loss may be adjusted by rotatingthe calibrated connector loops. All duplexers are tuned and testedwith customer-specified frequencies prior to shipping. If frequencychanges are required, the positive locking mechanism allows for easyfield 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.

Designed for operation in the 406-512 MHz band, this compact 4-cavityduplexer provides excellent performance while conserving valuablerack space. At 5 MHz separation, this unit provides isolation inexcess of 75 dB with less than 0.8 dB insertion loss.

When rack space is the prime consideration, this 4 cavity verycompact duplexer is ideal. It is designed to provide optimumperformance for systems with 5 MHz frequency separation operating inthe 450-512 MHz frequency band. Typically low insertion loss and highisolation, characteristic of all Sinclair Q-circuit Res-Lokduplexers, is achieved with this unit.

440-512MHz 300W 1.2dB IL 300W 5Mhz Offset Duplexer

Vari-Notch® duplexers are used to provide simultaneousoperation of a transmitter and receiver (ortwo transmitters) which are at different frequencieswhile connected to a common antenna. Theseduplexers are frequently used in radio repeatersystems.

The Telewave TPCD-4546 duplexers allow simultaneous operation of atransmitter and receiver into a common antenna. These bandpassduplexers have low insertion loss, and are ideal in frequencycongested areas where protection is needed from surroundingtransmitters, and where maximum transmitter sideband filtering isnecessary. Because of their superior construction, these Telewave 4"cavity duplexers achieve greater rejection of transmitter noise andspurious radiation, providing excellent receiver protection. TheTPCD-4546 has three, 3/4 - wave bandpass cavities in the transmitterand receiver sections.These duplexers are designed for transmittersand receivers with frequency spacing of 5 MHz or more. Selectivityand insertion loss may be adjusted by rotating the calibratedconnector loops. Telewave duplexers have 1/4 -inch aluminum top plates which arefully welded to the aluminum outer conductor. Silver-plated tuners, beryllium copper finger stock contactors and threaded Invar rods assure maximum temperature stability, higher "Q", and many years of trouble free operation."

Vari-Notch® duplexers are used to provide simultaneousoperation of a transmitter and receiver (ortwo transmitters) which are at different frequencieswhile connected to a common antenna. Theseduplexers are frequently used in radio repeatersystems.