Narrow 70cm 50W BandPass Filter 430-450MHz

Low insertion loss narrow 70cm 50W BandPass Filter 430-450MHz. Put this filter after up to 50W transmitter or before wideband preamplifier to prevent overloading from other bands. This filter is equally good as transmitting or receiving with a super low loss of just 0.15dB. Its compact size and easy installation make the filter a convenient and practical addition to your radio setup.

70cm 50W BandPass Filter 430-450MHz appearance:

70cm 50W BandPass Filter 430-450MHz

Measured results of 70cm 50W BandPass Filter 430-450MHz with calibrated HP8753ES network analyzer

1.8 MHz -105 dB
3.8 MHz -105 dB
7.1 MHz -104 dB
14.15 MHz -104 dB
21.2 MHz -103 dB
28.4 MHz -98 dB
50.1 MHz -83 dB
70.2 MHz -73 dB
88 MHz -67 dB
108 MHz -61 dB
70.2 MHz -73 dB
144 MHz -52 dB
148 MHz -52 dB
222 MHz -37 dB
430 MHz -0.145 dB, Input RL better than -35dB
432 MHz -0.14 dB, Input RL better than -35 dB
440 MHz -0.142 dB, Input RL better than -35 dB
450 MHz -0.14 dB, Input RL better than -35 dB
Harmonics and interfering signals:
864 MHz -39 dB
930 MHz -42 dB
1296.1 MHz -41 dB