144 - 148 MHz, 2 Meter band High Power Bandpass Filter 4000W

2 meter Bandpass Filter BPF uses high Q coils and capacitors with Q more than 4500. Low loss of filter achieved with careful design and adjustment.

Although intention of this filter is to be used as transmitting filter, design allows also to be used as receiving filter before wideband LNA to protect sensitive device from strong out of band signals. Like this.

Intended to be used with linear amplifiers. Some examples are 8877, GS35, GS31, OM1002+, OM2002+, as well as with other tubes or transistors up to 4 kW output.

Super low insertion loss. Excellent to put before any LNA or protect receiver from HF transmitters in DX expeditions or in multi-multi environment. This BPF will suppress any signals from HF 1.8 - 28 MHz stations, 50-54 MHz, 70 cm - 432 MHz (430 - 440 MHz).

This filter uses 7/16 DIN connector type. Similar Low Loss Band Pass Filter designed for 1500 W linear power output that uses "N" connectors.

Filter will reduce TVI problem or your problem with neighbors with strong RFI from HF, 6 meter or 70 cm transmitters.

Measured data on the assembled filter with HP8753ES network analyzer full 2-port calibrated.

Measured Return Loss - S11 (CH 1) and Insertion Loss - S21 (CH 2). Characteristics of 144 MHz Transmitting Bandpass filter.

Similar 144 MHz Band Pass filters:

2 meter band, 144 MHz Bandpass Receiver for Ham: 144 - 146 MHz High Selectivity, High Q, Low Loss Band pass Filter

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2 meter band, 144 MHz Bandpass with SPF preamplifier: 144 - 146 MHz High Selectivity, High Q, Low Loss Band pass Filter with SPF-5122Z Preamplifeir

2 meter band, 144 MHz Bandpass with PGA preamplifier: 144 - 146 MHz High Selectivity, High Q, Low Loss Band pass Filter with PGA-103+ Preamplifeir

2 meter band, 144 MHz 100 W Bandpass for Ham: 144 - 148 MHz 100 W Receiving and Transmitting Band pass Filter

2 meter band, 144 MHz 200 W Bandpass for Ham: 144 - 146 MHz 200 W Receiving and Transmitting Band pass Filter

2 meter band, 144 MHz 1500 W Bandpass: 144 - 148 MHz Low Loss (<0.1 dB) High Power Band pass Filter 1.5 kW

2 meter band, 144 MHz 4000 W Bandpass: 144 - 148 MHz Low Loss (<0.1 dB) High Power Band pass Filter 4 kW

2 meter band, 144 MHz EME 3 Bandpass PGA preamplifier: 144 - 148 MHz EME 3 Filter Relay With Preamplifier