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jel248

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Location: DenmarkMember since: Mar 16, 2018

All feedback (2)

ux168 (1571)- Feedback left by buyer.
More than a year ago
Verified purchase
Hope to deal with you again. Thank you.
Reviews (1)
Broadcast FM Band Stop Filter (88 - 108 MHz FM Trap) by RTL-SDR Blog
Apr 18, 2018
Improves across the entire spectrum when scanning with AirspyR2
Using the Airspy R2 near a FM-radio broadcast antenna, I had lots of interference from FM-radio signals. The CB-band had large spikes all over it. The airband had large spikes all over it. On many different places, across the entire receivable spectrum, the FM-spikes would show. The FM-filter is very efficient and has opened up the bands that were previously closed. It begins a slow fade from full-pass at 80 MHz to max-stop at 84 MHz. Continues max-stop to 114 MHz and is back up to full-pass at 118 MHz. So max-stop is between 84-114 MHz, although the filter has a dampening effect from 80-118 MHz. It has no ill-effects on the reception of airband-communication (But the nav-part of the airband is obviously affected (But no talk is at that band, so that shouldn't matter to many) The only thing I missed on the box, was a clear indication of which input to hook up to the antenna and which input to hook up to the SDR (in and out markers or a tiny flow-diagram or some other kind of indication of what is input and output) (Turns out the FM-filter has a left-to-right orientation (Going in the direction from antenna to computer), relative to the printed text on the top of the black box, where the AirspyR2 has a right-to-left orientation relative to its printed box-text.) Works great :) JEL