Top 10 Broadcast FM Block Filter – Electronics

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1. RTL-SDR Blog

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Broadcast FM Block Filter 88, 108 MHz Block by RTL-SDR Blog

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RTL-SDR Blog #ad - Designed for sdr and radio scanner users. Blocks the broadcast fm band between 88 – 108 MHz with over 50dB of attenuation. Tv installers please read the description carefully to avoid disappointment. Comes with a free SMA male to SMA male adapter. Tv installers this is probably not the right product for you. Uses sma female connectors. Insertion loss is less than 05 db between 0 – 1 GHz, and mostly less than 1. 5 db between 1 – 3 GHz.
BrandRTL-SDR Blog #ad
ManufacturerRTL-SDR Blog #ad
Part Number4330366327
Model4330366327

2. NooElec

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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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NooElec #ad - 70db typical max attenuation. For other locations, Flamingo FM v1 is a better option. Designed and manufactured by Nooelec in North America, with a full 2-year product warranty.

Flamingo+ fm flamingo fm v2 is a high attenuation bandstop filter designed to stop very strong broadcast FM transmissions from causing overload and other issues with your radio or SDR. And less of an effect on the adjacent VHF airband of 108MHz-137MHz 8dB avg. Attenuation vs 16dB avg. The attenuation level of this filter is much higher than flamingo fm v1 >60dB typical avg. We recommend this filter for urban environments and other locations with high-wattage FM transmitters nearby. Flamingo+ fm has a higher attenuation than other similar commercial filters, while also have a lower insertion losses outside of the stop band
BrandNooElec #ad
ManufacturerNooelec Inc. #ad
Height0.39 Inches
Length3.15 Inches
Width1.18 Inches
Part Number100813
ModelFlamingo+ FM

3. NooElec

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Broadcast FM Bandstop Notch Filter for Software Defined Radio SDR Applications, Distill:FM Barebones

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NooElec #ad - Designed and manufactured by Nooelec in the United States. Bandstop design means the filter will pass DC bias-t power. A high-quality, high-performance bandstop filter designed to attenuate broadcast FM for software defined radio SDR applications, with minimal interference to adjacent bands and tiny insertion loss.

Full 2 year product warranty direct through Nooelec. Makes a great companion to any sdr, but especially RTL-SDRs like our NESDR series, which can be easily overloaded by strong broadcast FM signals. Distill: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.
BrandNooElec #ad
ManufacturerNooelec Inc. #ad
Height0.39 Inches
Length2.36 Inches
Weight0.04 Pounds
Width0.79 Inches
Part Number100758
ModelDistill:FM Barebones

4. Oumefar

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Radio Accessories Low Noise Amplifier Broadcast FM Block Filter Band Filter Module FM Filter Board for Software Defined Radio SDR Applications with Connector

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Oumefar #ad - Supports that broadcast frequency band blocked between 88 ~ 108 MHz while attenuation exceeds 50dB. Designed for maximum attenuation 88‑108 mHz and the maximum attenuation between the 3dB roll point is 76 MHz and 122 MHz. And small and convenient FM filter board can be used with confidence for its guaranteed quality. Blocks the fm transmission band between 88‑108 MHz, band filter module can be practical and useful. The insertion loss is less than 05 db between 0 and 1 GHz, and mostly less than 1. 5 db between 1 and 3 GHz.
BrandOumefar #ad
ManufacturerOumefar #ad
Height0 Inches
Length0 Inches
Weight0.04 Pounds
Width0 Inches
Part NumberOumefarwrd0nbacx5

5. Oumefar

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FM Filter Board Band Filter Module Radio Accessories Broadcast FM Block Filter Communication System for Software Defined Radio SDR Applications with Connector

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Oumefar #ad - Supports that broadcast frequency band blocked between 88 ~ 108 MHz while attenuation exceeds 50dB. And small and convenient FM filter board can be used with confidence for its guaranteed quality. The insertion loss is less than 05 db between 0 and 1 GHz, and mostly less than 1. 5 db between 1 and 3 GHz. Blocks the fm transmission band between 88‑108 MHz, band filter module can be practical and useful. Designed for maximum attenuation 88‑108 mHz and the maximum attenuation between the 3dB roll point is 76 MHz and 122 MHz.
BrandOumefar #ad
ManufacturerOumefar #ad
Height0 Inches
Length0 Inches
Weight0.04 Pounds
Width0 Inches
Part NumberOumefar1cu8b0ramv

6. Oumefar

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FM Filter Board 88‑108 MHz Broadcast FM Block Filter Band Band Stop Filter Module Electrical Radio Accessories with Connector

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Oumefar #ad - Broadcast frequency band blocked: when the attenuation exceeds 50db, the broadcast frequency band is blocked between 88 ~ 108 MHz. Maximum attenuation between 3dB Roll Points are 76 MHz and 122 MHz. Regulatory compliance: this band stop filter module is entitled with high performance according to strict quality control and quality assurance.

Insertion loss: there has a insertion loss of the radio accessories, and the insertion loss is less than 05 db between 0 and 1 GHz, and mostly less than 1. 5 db between 1 and 3 GHz. Superior design: this band filter module is designed for maximum attenuation between 88-108 MHz.

Supports that broadcast frequency band blocked between 88 ~ 108 MHz while attenuation exceeds 50dB. Practical & useful: blocks the fm transmission band between 88‑108 MHz, band filter module can be practical and useful. And small and convenient FM filter board can be used with confidence for its guaranteed quality. The module with high safety factor can be used with peace of mind.
BrandOumefar #ad
ManufacturerOumefar #ad
Height0 Inches
Length0 Inches
Weight0.04 Pounds
Width0 Inches
Part NumberOumefargctohaxnpi

7. Oumefar

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Broadcast FM Block Filter Band Filter Module Radio Accessories FM Filter Board for Software Defined Radio SDR Applications with Connector

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Oumefar #ad - Blocks the fm transmission band between 88‑108 MHz, band filter module can be practical and useful. Supports that broadcast frequency band blocked between 88 ~ 108 MHz while attenuation exceeds 50dB. And small and convenient FM filter board can be used with confidence for its guaranteed quality. Designed for maximum attenuation 88‑108 mHz and the maximum attenuation between the 3dB roll point is 76 MHz and 122 MHz. The insertion loss is less than 05 db between 0 and 1 GHz, and mostly less than 1. 5 db between 1 and 3 GHz.
BrandOumefar #ad
ManufacturerOumefar #ad
Height0 Inches
Length0 Inches
Weight0.04 Pounds
Width0 Inches
Part NumberOumefary5g7tzvm2h

8. NooElec

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Flamingo FM, Broadcast FM Bandstop Filter FM Notch Filter for Software Defined Radio SDR Applications

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NooElec #ad - Flamingo fm is a proper bandstop filter, so you are able to pass-through DC bias-tee power when required. 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.

A high-quality, high-performance bandstop filter designed for software defined radio SDR applications. The -3db rolloff of the filter is 80mhz and 115MHz, which means the VHF airband 108-137MHz is minimally affected. 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.

The filter is fully emi shielded, and installed in a custom black anodized aluminum enclosure for further protection and isolation. The minuscule out-of-band insertion losses means the filter can stay in place for most any application. 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.
BrandNooElec #ad
ManufacturerNooelec Inc. #ad
Height0.79 Inches
Length2.76 Inches
Weight0.04 Pounds
Width1.18 Inches
Part Number100780
ModelFlamingo FM

9. RTL-SDR Blog

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Broadcast AM Reject High Pass Filter 2.6 MHz HPF by RTL-SDR Blog

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RTL-SDR Blog #ad - Blocks the broadcast am band between 500 kHz - 1. 7 mhz with over 50 dB of attenuation. Note: for RX use only. Uses sma Female connectors. The 3 db roll-off point is between 2. 5 - 2. 6 mhz. Rtl-sdr blog broadcast AM Reject Filter.
BrandRTL-SDR Blog #ad
ManufacturerRTL-SDR Blog #ad
Part Number4330366330
Model4330366330

10. NooElec

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Broadcast AM Bandstop Filter AM Notch Filter for Software Defined Radio SDR Applications, Flamingo AM

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NooElec #ad - A high-quality, high-performance broadcast am bandstop filter designed for software defined radio SDR applications. Flamingo am is a proper bandstop filter, so you are able to pass-through DC bias-tee power when required. The -3db rolloff of the filter is 350kHz and 1900kHz. Includes free male sma-male SMA barrel connector! Designed and manufactured by NooElec in North America.

The filter is fully emi shielded, which provides protection not just for your filter, installed in a custom anodized aluminum enclosure for further protection and isolation. These signals can overload the front end of an SDR, causing imaging and a number of other issues. 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. The minuscule out-of-band insertion losses means the filter can stay in place for most any application--though we do recommend removing Flamingo AM from the signal chain when not receiving HF frequencies.

Impeccable quality and full 2-year warranty. Flamingo am was designed to provide approximately 40db attenuation for broadcast am frequencies, while ensuring that adjacent bands are minimally affected. As such, flamingo am makes a great companion to our Ham It Up series of HF upconverters available separately on Amazon. Broadcast am stations can be particularly problematic due to the high-powered transmitters used for broadcasting in some areas. The front end is protected by an RF-rated ESD diode, but also the radio or SDR behind it.
BrandNooElec #ad
ManufacturerNooelec Inc. #ad
Height0.79 Inches
Length2.76 Inches
Weight0.08 Pounds
Width1.18 Inches
Part Number100779
ModelFlamingo AM