Receiving 2m Super Low Loss BandPass Filter 144-146MHz

Just -0.19 dB receiving a 2m Super Low Loss BandPass Filter 144-146MHz for direct connection to SDR or any other receiver. The connectors are arranged so that this 2m band-pass filter, with the lowest possible losses, can be connected directly to an IQ+Pro or similar SDR. Use this filter if you do not want to spoil receiving performance in DXing, contesting, or EME. More importantly, with this receiving filter, you will suppress disturbing signals of any strong HF, 6m, 1.25m, or 70cm stations. The Bandpass filter is enclosed in a strong brass box.

 

2m Super Low Loss BandPass Filter 144-146MHz appearance:

Achieved results on a built 2m Super Low Loss BandPass Filter 144-146MHz:

Insertion loss:

1.8 – 30 MHz > 90 dB
50 MHz 68 dB
70 MHz 55 dB
88 MHz 45 dB
108 MHz 30 dB
144-146 MHz -0.19 dB
432 MHz 56 dB

 

2m Super Low Loss BandPass Filter 144-146MHz HF Suppression

 

2m BandPass Filter 144-146MHz 10m 6m 4m 3m Suppression

 

Super Low Loss BandPass Filter 144-146MHz Insertion Loss and VHF UHF Suppression

 

2m Super Low Loss BandPass Filter 144-146MHz Zoomed Insertion Loss and Return Loss

 

2m Super Low Loss BandPass Filter 144-146MHz 288MHz 430-450MHz Harmonics Suppression

 

Use the above filter with just 0.19dB insertion loss before any 2m receiver to improve RX performance and suppress any disturbing out-of-band signals.

Info from HB9DRI
I received the filter today, and I test together with my new preamp, ALL PERFECT. I test the insertion loss, and it is less than 0.2dB each, associated with the BPF IN FRONT of the preamp, my NF meter reads GAIN = 27.5dB and NF 0.54dB, Excellent!!!, the IRL is still in -28dB. All will be installed this spring in HB9Q.
Alex HB9DRI

Info from W9IP
He installed the filter with a new preamp, and after years of battling with interference, now all is fixed and quiet.

 

Similar filters could be found here