DUAL 70CM Band pass filter - 430-450MHz 1kW

DUAL BPF70

430 - 440 MHz 1000W -0.06 dB Transmitting and Receiving Band-pass Filter with N connectors

With its extreme low insertion loss this filter could be used as transmitting and / or receiving filter in line with antenna. As transmitting to suppress any harmonics from 70cm up to 1kW linear amplifiers.

On receive side before LNA to protect receive performance from any HF, FM 2m, 220 MHz or 23cm strong stations.

Filter is completely the same as 2.5 kW version except connectors (7/16DIN N).

Achieved results on a built Band pass filter

Insertion loss (S21)

• 1.8 MHz = < -110 dB
• 3.8 MHz = < -110 dB
• 7.1 MHz = < -108 dB
• 14.15 MHz = < -100 dB
• 21.4 MHz = -92 dB
• 28.4 MHz = -84 dB
• 50.1 MHz = -69 dB
• 70.2 MHz = -60 dB
• 88 MHz = -54 dB
• 144 MHz = -39 dB
• 146 MHz = -39 dB
• 148 MHz = -38 dB
• 220 MHz = -24 dB
• 225 MHz = -23 dB
• 430 MHz = -0.06 dB, Input RL batter than -34 dB
• 432.1 MHz = -0.06 dB, Input RL batter than -34 dB
• 440 MHz = -0.06 dB, Input RL batter than -34 dB
• 860 MHz = -26 dB
• 864.2 MHz = -26 dB
• 880 MH z= -27 dB
• 1240 Mhz = -64 dB
• 1296.1 MHz = -48 dB

Maximum Power Input at SWR

• 1 : 1 = 1000 W
• 1 : 1.1.5 = 800 W
• 1 : 2 = 650 W
• 1 : 3 = 450 W