MFC 21000-3900/4200

21000-3900/4200 C-Band Bandpass Filter | 3900–4200 MHz | 5G & Out-of-Band Interference Rejection

The 21000-3900/4200 bandpass filter is designed to protect satellite downlink systems from adjacent-band and out-of-band interference, including 5G and terrestrial signals. With a passband of 3900–4200 MHz, it delivers up to 60 dB rejection below 3880 MHz and 45 dB from 4300–4700 MHz, while maintaining low insertion loss of just 1.0 dB max across most of the passband. Housed in a weatherproof IP67-rated enclosure with CPR-229G/F flanges, this filter is ideal for harsh outdoor SATCOM environments.

Key Features:

Passband: 3900–4200 MHz

Stopband Rejection:
   ≥60 dB from 3200–3880 MHz
   45 dB typical @ 4230 MHz
   ≥45 dB from 4300–4700 MHz

Insertion Loss:
   ≤1.5 dB @ 3900 MHz
   ≤1.2 dB @ 4200 MHz
   ≤1.0 dB from 3915–4195 MHz

Return Loss: ≥15 dB (VSWR ≤1.43:1)

Group Delay: ≤3.0 ns within ±0.5 MHz

Flanges: CPR-229G (input), CPR-229F (output)

Construction: IP67-rated for outdoor use