User Manual

STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft Page 378 of 500
20.3.2.3. Dielectric Cavity Resonator (04-003402)
Cavity resonators are used in this system for their high Q factor response and power handling
characteristics. Being finely tuned items, they can be prone to being de-tuned by mechanical shock or
vibration therefore these units should be handled, stored and installed with care.
Note that the cavities are coupled together using critical length harnesses. If any cable is to be
changed the exact same length and type of cable should be used for replacement.
04-003402 Specification
Specification Parameter
Frequency Range 764 to 776 MHz *
Bandwidth 25 kHz
Insertion Loss < 1.0 dB
Return Loss > 15 dB (at both ports)
Attenuation > 10 dB at Fc ± 1 MHz
Power Handling (CW) 20W
Environmental IP54
Size 124mm x 158mm x 157mm**
Weight 1.5 kg
Connectors N female
operation
-20°C to +60°C
Temperature
range
storage
-40°C to +70°C
*Tuned to Customer’s specification
**Height is dependant upon position of tuning plunger