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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
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About Flamingo+ FM - Broadcast FM Bandstop Filter V2
For more information, please visit the product page at nooelec.com! Flamingo+ FM (Flamingo FM v2) is a high-quality, high-attenuation bandstop filter designed for software defined radio (SDR) applications where broadcast FM transmissions are especially strong and/or problematic. This generally means urban areas, but can include rural areas where there are nearby high wattage FM transmitters. For other locations, we strongly recommend considering the original Flamingo FM v1, which has lower attenuation of the stopband but also lower attenuation of the nearby VHF airband (108-137MHz) and otherwise similar characteristics and out-of-band performance. 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. We designed Flamingo+ FM to provide sufficient attenuation for broadcast FM frequencies (>60dB typical average & >70dB typical maximum stopband attenuation) while ensuring adjacent bands, such as the important VHF airband (108-137MHz) are minimally affected. The -3dB rolloff of the filter is 75MHz and 120MHz, and -10dB rolloff of the filter is 80MHz and 116MHz. The minimal (
