144 - 146 MHz 50 W Receive-Transmit Bandpass Filter

  • 144 - 146 MHz 50 W Receive-Transmit Bandpass Filter

144MHz - 146MHz 50 W Low Loss Receiving and Transmitting Band Pass Filter

Intended for use with transceivers and transverters up to 50 W output, or before any wide band low noise amplifier (LNA) to protect from out of band signals.

This filter is equally good as transmitting and as receiving filter with super low loss (0.19 dB). 

Super low insertion loss. Excellent to put before any LNA or protect receiver from HF, 6m, 4m or 70cm transmitters. This band-pass filter will suppress any signals from HF 1.8 - 28MHz stations 50-54MHz, 70MHz, 432MHz (430 - 440MHz).

Filter will reduce TVI problem too.

144mhz-146mhz-50w/2m-50W-Band-Pass-filter-Antennas-Amplifiers.com

Achieved results on a built Bandpass filter:

Insertion loss: 
1.8 MHz - 110 dB
3.8 MHz - 113 dB
7.1 MHz - 108 dB
14.15 MHz - 97 dB
21.2 MHz - 88 dB
28.4 MHz - 82 dB
50 MHz - 63 dB 
54 MHz - 61 dB 
70 MHz - 51 dB
70.5 MHz - 51 dB
88 MHz - 40 dB
98 MHz - 34 dB
108 MHz - 26 dB
144 - 146 MHz - 0.19 dB
288 MHz - 49 dB
430 MHz - 60 dB
432.1 MHz - 60 dB
440 MHz - 59 dB
Maximum power input at SWR: 
1:1 = 50 W; 1:1.5 = 40 W; 1:2 = 30 W; 1:3 = 25 W
These excellent results were achieved by careful selection of components and design of the filter.

Measured Return Loss (S11) and Insertion Loss (S21).
144mhz-50w-bandpass-Filter-6m-2m-70cm-288mhz-S11-S21-Antennas-Amplifiers.com

More measured results with HP8753ES network analyzer full two port calibrated.
1. Measured HF Attenuation:
2m-50W-Bandpass-Filter-HF-Suppression-Antennas-Amplifiers.com

2. HF and 50 MHz band attenuation:
144mhz-50w-bandpass-Filter-HF-6m-4m-Suppression-Antennas-Amplifiers.com

3. FM attenuation:
2m-bandpass-Filter-50w-FM-Suppression-Antennas-Amplifiers.com

4. 144 - 146 MHz band attenuation. Excellent flatness on 2 meters band. Attenuation on 144 MHz: -0.19 dB, 145 MHz: -0.19 dB, 146 MHz: -0.19 dB, 148 MHz: -0.19 dB.
50w-bandpass-Filter-measured-data-zoomed-Antennas-Amplifiers.com

5. Harmonic and UHF attenuation.
50w-bandpass-Filter-HF-harmonics-Suppression-Antennas-Amplifiers.com

2 meter: 144, 145, 146 MHz 50 W Band-Pass filter with high suppression for out of band signals.
144MHz-145MHz-146MHz-50W-Band-Pass-filter-Antennas-Amplifiers.com

50W transmitting and receiving band-pass filter could be used for outdoor mounting. Price difference: +7 EUR (plastic box "DB" and two brackets).

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

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

2 meter band, 144 MHz Bandpass with SPF preamplifier144 - 146 MHz High Selectivity, High Q, Low Loss Band pass Filter with SPF-5122Z Preamplifeir

2 meter band, 144 MHz Bandpass with PGA preamplifier144 - 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 Bandpass144 - 148 MHz Low Loss (<0.1 dB) High Power Band pass Filter 1.5 kW

2 meter band, 144 MHz 4000 W Bandpass144 - 148 MHz Low Loss (<0.1 dB) High Power Band pass Filter 4 kW

2 meter band, 144 MHz EME 3 Bandpass PGA preamplifier144 - 148 MHz EME 3 Filter Relay With Preamplifier


  • Product Code: 0652
  • Availability: In Stock
  • 129.00€


Tags: 144MHz, 145MHz, 146MHz, 2Meters, 50W, Receiving, Transmitting, RFI, Band-Pass, Filter, BPF, VHF, BandPass, LowLoss