144 - 146 MHz 200 W Transmit - Receive Narrow Bandpass Filter

  • 144 - 146 MHz 200 W Transmit - Receive Narrow Bandpass Filter

144 MHz - 146 MHz 200 W Transmit - Receive Low Loss Narrow Bandpass Filter

Intended for use with transceivers and transverters up to 200 W output, or before any wide band low noise amplifier (LNA) to protect from any out of band signals. Bandpass filter BPF uses high Q coils as well as high Q capacitors. Low loss of filter is achieved with careful design and adjustment.

This filter is equally good as transmitting and as receiving low loss filter (0.25 dB). 

The filter will reduce TVI problem or your problem with neighbors with strong HF, 6 m or 70 cm transmitters.

2m-144MHz-146MHz-200W-Transmit-Receive-Bandpass-Filter-Made-By-antennas-amplifiers.com

Achieved results on a built Band-pass filter:

Suppression - Insertion loss (S21): 
1.8 MHz = -106 dB
3.8 MHz = -110 dB
7.1 MHz = -110 dB
14.1MHz = -105 dB
21.2MHz = -101 dB
28.4MHz = -94 dB
50 MHz = -76 dB 
52 MHz = -75 dB 
54 MHz = -73 dB 
70 MHz = -64 dB
70.5 MHz= -64 dB
88 MHz = -53 dB
98 MHz = -46 dB
108 MHz = -39 dB
144 - 146 MHz = -0.25 dB
288 MHz = - 60 dB
432.1 MHz = - 36 dB
440 MHz = - 44 dB
Maximum power input at SWR:
1:1 = 200 W; 1:1.5 = 140 W; 1:2 = 90 W; 1:3 = 70 W (Intermittence 50%)

Measured Return Loss (S11) and Insertion Loss (S21). Characteristics of 144 - 146 MHz 200 W Band pass filter:
144-146-MHz-2-meter-Band-pass-Filter-200-W-FM-2-m-S11-S21-Made-By-antennas-amplifiers.com
2m 200W Transmit - Receive Low Loss Narrow Bandpass Filter
2m-144MHz-146MHz-200W-Transmit-Receive-Narrow-Bandpass-Filter
1. HF Suppression for 144 - 146 MHz 200 W Band-pass filter:

2meters-144-146-MHz-200-W-Band-pass-Filter-200W-HF-Suppression

2. Suppression on 50 MHz (6 Meter band) for 144 - 146 MHz 200 W Band-pass filter:

144-MHz-Bandpass-Filter-200-W-10m-6m-Suppression-Made-By-antennas-amplifiers.com

3. Suppression on 70 MHz (4 Meter band) as well as FM frequencies for 144 - 146 MHz 200 W Band-pass filter:

2m-Filter-200W-6m-FM-88MHz-108MHz-Suppression-Made-By-Antennas-Amplifiers.com

4. Zoomed characteristics:

144MHz-146MHz-Bandpass-Filter-200W-S11-S21-Measured-Data-Zoomed-Made-By-antennas-amplifiers.com

5. Suppression on Harmonic and 70 cm band. Attenuation on 288 MHz harmonic is more than 60 dB and 432 - 440 MHz attenuation is from 36 to 44 dB.

2m-Bandpass-Filter-200W-144-146-MHz-Harmonics-Suppression-Made-By-Antennas-Amplifiers.com

200 W transmitting and receiving band-pass filter could be used for outdoor mounting. Price difference 8 EUR (plastic box "DB" and two brackets).

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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 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: 0656
  • Availability: In Stock
  • 149.00€


Tags: 144MHz, 145MHz, 146MHz, 2m, 2meters, 200W, Receive, Receiving, Transmitting, RFI, Band-Pass, Filter, BPF, VHF, BandPass, High, Q, Low, Loss, Field, Day, Ham, Radio