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Rx preselector filters
A family of passive high-selectivity RF filters installed in the antennas path of RF communication receivers to prevent de-sensitization and non-linear operation caused by strong,
out-of-band interfering RF signals. Allow undegraded receiver performance in
installations where RF receivers and high-power RF transmitters are co-located. Filter types
fixed-frequency filters , bandwidth = 1% of tuned frequency,
attenuation ≥ 60dB
at 10% off frequencies tunable filters
, bandwidth = 3% of tuned frequency, attenuation ≥ 40dB
at 10% off frequencies
Frequency bands
100 kHz to 400MHz for fixed-frequency filters 1,5 MHz to 32 MHz for tunable filters 30 MHz to 78 MHz for tunable filters 70 MHz to 120 MHz for tunable filters 110 MHz to 170 MHz for tunable filters
Common
to all filters
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