FM broadcast filter.

[jazzboypro]

Hello all,

you guys have any suggestions for a good FM broadcast filter ?

Many thanks.

73 de va2fcs

 

[bearcatrp]

This is what I am using. Works as advertised.

Connectorized Band Stop Filter, 88-105 MHz | ZBSF-95-N+ | Mini-Circuits

Mini-Circuits is a global leader in the design and manufacturing of RF, IF, and microwave components from DC to 86GHz.

www.minicircuits.com

 

[Saint]

Hello all,

you guys have any suggestions for a good FM broadcast filter ?

Many thanks.

73 de va2fcs

I have been using this for years and it works.​

Saint

Amazon.com​

Flamingo+ FM - Broadcast FM Bandstop Filter v2 (FM Notch Filter) for Software Defined Radio (RTL-SDR) Applications. Blocks Problematic 88-108MHz Frequencies from your SMA-Connected Radio​

 

[prcguy]

This is what I am using. Works as advertised.

Connectorized Band Stop Filter, 88-105 MHz | ZBSF-95-N+ | Mini-Circuits

Mini-Circuits is a global leader in the design and manufacturing of RF, IF, and microwave components from DC to 86GHz.

www.minicircuits.com

This is also what I use. I’ve been disappointed with most others I’ve had. Compared to the MiniCircuits, all others seem like toys.

 

[jazzboypro]

Just a few minutes after starting this thread I found an old (2021) thread on RR and indeed the Minicircuit filter seems to be the winner compared to a few others.

 

[Ubbe]

Just a few minutes after starting this thread I found an old (2021) thread on RR

Yes, look at the diagrams in that thread how filters cuts the frequency below and above the broadcast band and choose the one that doesn't attenuate the frequencies you want to receive. If your closest FM broadcast transmitters are far away then you don't need a very deep filter, less costly, and usually it will then also attenuate less of you monitored frequencies.

I need both my local airport at 118MHz to be received as well as systems in the 86MHz range so I have to choose wisely.

/Ubbe