Flamingo FM - Broadcast FM Bandstop Filter (FM Notch Filter) for Software Defined Radio (SDR) Applications
A high-quality, high-performance bandstop filter designed for software defined radio (SDR) applications. Designed and manufactured by Nooelec in North America, with a full 2-year product warranty. Broadcast FM can be particularly problematic due to the high-powered transmitters used for broadcasting in some areas. These signals can overload the front end of an SDR, causing imaging and a number of other issues. We designed Flamingo FM to provide sufficient attenuation for broadcast FM frequencies (>40dB typical) while ensuring adjacent bands, such as the important VHF airband (108-137MHz) are minimally affected. The -3dB rolloff of the filter is 80MHz and 115MHz. Minimal out-of- band insertion loss means the filter can stay in place for most any application. As a true bandstop filter, you are able to pass-through DC (bias power) when it is required. DC current handling is 250mA (min), and the maximum recommended signal level is 18dBm (5Vp-p), so there is no issue using the filter for higher-power applications. Typical performance characteristics can be found on the downloads tab of the product page on our website. Flamingo FM has its filter circuitry fully shielded with an EMI frame, and has its front end protected by an ESD diode meant for RF applications. 2 mounting holes are available on the PCB for various mounting options, and the SMA hardware (washer and nut) is included.
Product Features
- A high-quality, high-performance bandstop filter designed for software defined radio (SDR) applications. Includes free male SMA-male SMA barrel connector!
- Flamingo FM was designed to provide approximately 40dB attenuation for broadcast FM frequencies, while ensuring that adjacent bands are minimally affected. The -3dB rolloff of the filter is 80MHz and 115MHz, which means the VHF airband (108-137MHz) is minimally affected. The minuscule out-of-band insertion losses means the filter can stay in place for most any application
- The filter is fully EMI shielded, and installed in a custom black anodized aluminum enclosure for further protection and isolation. The front end is protected by an RF-rated ESD diode, which provides protection not just for your filter, but also the radio or SDR behind it
- Flamingo FM is a proper bandstop filter, so you are able to pass-through DC (bias-tee) power when required. DC current handling is 250mA (min), and the maximum recommended signal level is 18dBm (5Vp-p), so there is no issue using the filter for higher-power applications
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