Block broadcast interference with this FM notch filter for your SDR

[@oetken007]

Ordered 😊

[@aunumero73]

Hi Stan ! I tested one recently, and found that even if you switch input and output (antenna to output socket), the filter works just as well. I found this rather strange ...

[@k9swx]

That's interesting. I wonder why they labeled the connectors then. Thanks for the info!

[@aunumero73]

@@k9swx Give it a try and tell me if you notice the same

[@giovanniv7992]

The protection diode D1 must be connected to the antenna. From Flamingo+ FM page on Nooelec site: "Broadcast FM signals can be particularly problematic compared to other signal types due to their amplitude (transmit power) and proximity to residential areas. These signals can overload the front end of an SDR, causing imaging and a number of other issues. ... Flamingo+ FM has its front end protected by an ESD diode meant for RF applications."

[@astromanicdave]

I got one of these, but it must be faulty. I can still tune in FM bands

[@k9swx]

How close to the broadcast towers are you?

[@astromanicdave]

@@k9swx none that close to me. The filter or my sdr must be faulty.

[@MalcombMedia1]

Is it good for TV? Is it better than the Channel master CM3202? I live next to several FM stations & Airport.

[@k9swx]

I've never tried it on the TV nor have I tried the Channel Master. Worth a shot but the Channel Master might be better since it has the correct connectors and the other one has SMA connectors.

[@joe10117]

Jan 2024 bought this along with 2 SMA FEMALE TO utilize with my tv antenna hoping it works

[@MalcombMedia1]

@@joe10117 update if it works