2 meter 144 – 146 MHz High Selectivity Low Loss Band Pass Filter

2 meter 144 – 146 MHz High Selectivity Low Loss Band Pass Filter

109,00 

2 meter 144 – 146 MHz Receiving Low Loss Receiving Band Pass Filter

Band pass Filter BPF uses high Q coils with unloaded Q of more than 1000, and capacitors with Q more than 1200. Low loss of filter achieved with careful design and adjustment. Best receiving RFI band-pass filter for Ham Radio designed for 2 meter band.

Positions of connectors are selected so that the filter can be directly connected to the coaxial relay. Band pass filter enclosed in strong 0.8 mm sheet brass box. Strong mechanics will ensure stability and longevity.

This type of filter will almost nothing disturb noise performance of preamplifiers which is especially important in terrestrial and EME (Earth – Moon – Earth) communications. It will further ensure smooth operation in the presence of strong signals.

 

 

2m-144MHz-low-loss-bandpass-filter-Made-By-Antennas-Amplifiers.com

 

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

 

2m-144MHz-RFI-bandpass-filter-2-meters-antennas-amplifiers.com

 

Achieved results on a built Band pass filter:

50 MHz = -68.4 dB
88 MHz = -45.6 dB
108 MHz = -31.5 dB
144 MHz = -0.21 dB
146 MHz = -0.21 dB
432 MHz = -75 dB

 

These excellent results were achieved by careful selection of components and design of the filter.

 

1. Filter characteristics ”zoomed”

 

2-meter-144MHz-bandpass-filter-on-network-analyzer-antennas-amplifiers.com

 

2. Measured data of 144 – 146 MHz RFI band-pass filter. Insertion loss – S21 (Attenuation) is set to 0.3 dB per division!

 

2m-144MHz-low-loss-bandpass-filter-Measured-Data-0.3dB-Zoomed-In-Made-By-antennas-amplifiers.com

 

Feel free to send e-mail if you need something more specific.

All band-pass filters are here: HF, VHF and UHF Band-Pass Filters

Direct link to all 2 meter filters. We have 50 W, 100 W, 200 W, 300 W, 1500 W and 4000 W versions: 2 Meter Band-Pass Filters

 

Additional information

Weight 1 kg

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