Selective band-pass filter for FM broadcasting applications in the 87.5–108 MHz frequency band. The filter is designed for transmitters with output power up to 500 W and provides suppression of unwanted signals outside the operating channel.
The cavity design with a high quality factor enables low insertion loss while maintaining high selectivity. The filter is designed especially for professional FM transmitters, broadcasting sites, and multi-transmitter systems where minimization of interference and intermodulation products is required.
RAFF130-D33-500W – 2 × DIN 7-16 connector, dual cavity filter
RAFF130-D22-500W – 2 × N connector, dual cavity filter
RAFF130-T33-500W – 2 × DIN 7-16 connector, triple cavity filter
RAFF130-T22-500W – 2 × N connector, triple cavity filter
frequency range: 87.5–108 MHz
maximum input power: 500 W
impedance: 50 Ω
return loss S11 < -25 dB
high selectivity
low insertion loss ~0.5dB/doublecavity , 0.8dB tripple cavity
robust mechanical construction
individual tuning according to the required operating frequency
FM broadcast transmitters
small and medium-sized broadcasting systems
FM channel combining systems
transmitter output stage filtering
protection of broadcasting systems against unwanted signals and products
Each filter is individually measured and tuned according to customer requirements.
Developed and manufactured in the Czech Republic
RAYTRA Microwave Devices