NooElec Distill:FM Barebones - Broadcast FM Bandstop Filter for Software Defined Radio Applications

very good product

Substantialy reduced mirror signals from strong broadcast fm when using sdr on hf bands

Only FM broadcast I found to be a surprise that didn't filter altogether was Classic FM. Luckily I love classical music!. all the other broadcast filtered out I thought Radio 1 would have been the strongest but Classic FM wins ha! you can see my images on NooElec Sawbird +NOAA review.

Does what it says very good...

This actually works. I’ve had so many problems with interference from broadcast band and have tried all sorts. I purchased this on a whim not really expecting it to work all that well, however it works very well and only a tiny bit of interference still gets through. I mainly listen to airband and it works very well for that.

Worked as advertised, reducing broadcast FM interference into other bands of SDR receiver set up.

When this was placed in line I noticed NO. Difference!

I've just got into SDR radio with a Funcube dongle & was getting a lot of interference when trying to listen and record the downlink from weather satellites. There's a lot of transmissions of the same waveband in my area so I thought this may help. Tried it out last night & I have to say I didn't really see that much difference in the waveband of the FM frequencies being broadcasted near to me, so it didn't really reduce them by that much. Maybe it'll work better if I had a dedicated antenna for the 137mhz frequency for the satellites. But for now, it's not an amazing item.

Salve ho letto tante recensioni su questo filtro molte positive altre un po meno. Quindi ho deciso di fare una prova strumentale con analizzatore di spettro con TG. La curva non è lineare attenua poco agli estremi ma a 94 mhz oltre 50 db . Considerando il costo d' acquisto non male. Chiaramente ci sono filtri che hanno altre caratteristche ma hanno costi molto elevati

Remplis très très bien son objectif, indispensable avec un ampli .

work very well it block a lot of undesirable signals in a noisy place like in big city i love it!

If you have an SDR and you live next to an FM radio transmitter than this is your device. It will filter those signals so that you can listen to stuff just outside the FM broadcast band. It works fine.

This filter are for people who wants to preserve full signal at 118MHz and above and at 82MHz and below. It attenuates 20dB at 90Mhz and 103MHz. A 94MHz it has it deepest null at 40dB. It still has 30dB at 92MHz and 101MHz. There are other filters for people who needs much more attenuation at the FM broadcast band edges and doesn't care so much for VHF air band and the upper end of VHF-LOW. For most people if will do its job and are an excellent filter at this low cost. My scanner with CloseCall immediately detected a 390MHz transmitter in a tower 3km away and a mobile guy transmitting at 69Mhz 1km away when the filter was installed.