Broadcast FM Band Stop Filter (88 - 108 MHz FM Trap) By RTL-SDR Blog

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Includes<br>1x RTL-SDR Blog Broadcast FM Band-Stop Filter<br>1x SMA male to SMA male adapter<br>Blocks the broadcast FM band between 88 – 108 MHz with over 50dB of attenuation.  Designed for maximum attenuation between 88 - 108 MHz and the 3dB roll off points are at 76 MHz and 122 MHz.<br>Insertion loss is less than 0.5 dB between 0 – 1 GHz, and mostly less than 1.5 dB between 1 – 3 GHz.<br>Uses SMA female connectors. Comes with a free SMA male to SMA male adapter.<br>A broadcast FM block filter can help if you have very strong broadcasts in your area that are overloading the SDR dongle. Also known as “FM Trap”.<br>Notes: RX filter only. Designed for SDR users, but might also be useful for TV users struggling with FM interference. But TV users please carefully check the spectrum analyzer graphs and 3dB roll off points to ensure that it will not block a TV signal of interest. e.g. Channels between 76 - 88 MHz could be attenuated enough to lose reception.<br>Shipping<br>Free Economy Shipping:<br>China Post. Takes anywhere from 1-8 weeks for delivery, typically 3-6 weeks. May take up to 8 weeks or more during peak times (Christmas etc).<br>Standard Shipping:<br>Either ePacket EMS, HK Post, Swiss Post or PostNL depending on the country, available methods and pricing. Can also take anywhere from 1-6 weeks delivery, but typically quite a bit faster and more reliable than China Post.<br>Delivery times also depend on your countries local post and customs centers and other factors such as peak season demands, holidays, weather, customs security delays etc. In some cases if you order multiple items then we may upgrade you to standard shipping for free, but no guarantees.<br>