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

rtl-sdr-blog
(11400)
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US $17.95
Condition:
New
More than 10 available1,783 sold

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US $10.00 Standard Shipping from outside US.
Located in: Shanghai, China
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Delivery:
Estimated between Thu, Nov 20 and Fri, Dec 12 to 94104
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eBay item number:282265486654
Last updated on Aug 24, 2025 18:12:13 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Compatible Brand
RTL-SDR Blog
UPC
0642419993872
Brand
RTL-SDR
Type
Block Filter
Supported Modes
SSB, CW, FM, AM
Number of Channels
1
Number of Inputs
1
Color
Black
Model
4330366327
MPN
4330366327
Year Manufactured
2016
Band
UHF, VHF, FM, HF
Number of Outputs
1
Category

About this product

Product Identifiers

Brand
RTL-SDR
MPN
4330366327
UPC
0642419993872
Model
4330366327
eBay Product ID (ePID)
1693861477

Product Key Features

Year Manufactured
2016
Number of Channels
1
Number of Inputs
1
Color
Black
Supported Modes
SSB, CW, FM, AM
Band
UHF, VHF, FM, HF
Number of Outputs
1
Type
Block Filter

Dimensions

Weight
0.05 lbs.

Item description from the seller

Seller business information

VAT number: NZ 59857983

About this seller

rtl-sdr-blog

99.7% positive feedback•43K items sold

Joined Jan 2015
Usually responds within 24 hours
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

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Consumer ElectronicsComputers/Tablets & Networking

Seller feedback (12,183)

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Negative
  • a***- (21)- Feedback left by buyer.
    Past year
    Verified purchase
    Did a small test with and without it on the RTL-SDR v4 and it blocked well the commercial FM band.
  • u***s (55)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    For what it's worth, does the job. Unfortunately, there is so much RFI locally, it's difficult to determine exactly what needs to be isolated. No fault here.
  • 3***b (174)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    This FM bandstop filter is as described, does its job as its supposed to and can't complain about that. Thanks!
See all feedback

Product ratings and reviews

Learn more
4.9
51 product ratings
  • 46 users rated this 5 out of 5 stars
  • 5 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 30 reviews
  • by eduardo9002
    Jul 09, 2025Top favorable review

    Excellent response in and out FM Band

    I have others FM filters and this one is the best by far specially considering the price. I checked it with an spectrum analyzer with tracking generator and definitely it is well done. Mine gets min 50db from 87.9 to 108.1. Att at 450 Mhz is 0,2db. Its is incredible small. Without connectors 3x3x1,4 all in cm. Good luck

    Verified purchase: YesCondition: NewSold by: rtl-sdr-blog

  • by testum
    Jan 07, 2017

    A really nice FM band reject filter

    I needed an FM band reject filter for making spurious and harmonic spectrum analyzer measurements for a broadcast transmitter in the FM band and this filter does just that. The attenuation from 88 to 108 MHz is more than 50 dB as measured on my network analyzer (53.4 dB at 88 MHz and 56.4 dB at 108 MHz). If you were to use this filter with an aircraft band radio receiver, it will attenuate the lower part of the band (118 to 124) to some degree, so that it may not be useful for that application. It would have been nice if the top end of the reject response were a little lower in the FM band. The filter appears to be a very well built device mounted inside of a metal box with female SMA connectors. Also supplied is a double male SMA adapter, and the price, as delivered, is quite ...

    Verified purchase: YesCondition: NewSold by: rtl-sdr-blog

  • by bilalek
    Dec 04, 2017

    It is useful

    It is useful for RTL-SDR dongle. It helps listening VHF, UHF and airband with RTL-SDR. It is reducing effect of FM broadcast stations on VHF, UHF and airband. You can see screen shots of SDRsharp with and without filter. I can hear airband as same as my professional receiver after put it between antenna and my RTL-SDR dongle. Thank you producer. You can also use it as a frame of your custom filter design. Remove SMD components and put your own on it.

    Verified purchase: YesCondition: NewSold by: rtl-sdr-blog

  • by jel248
    Apr 17, 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 ...

    Verified purchase: YesCondition: NewSold by: rtl-sdr-blog

  • by k0ip
    Feb 09, 2021

    It works

    It did do the job I wanted..., its very strange because all the high power FM stations are over 5 miles away, BUT I have a lot of receiver overload around the VHF bands like 2 meter ham, I have had this problem with several different SDR receivers and just plan scanners radios, when connected to outside antennas. total de-sense , swamping front end, by the FM broadcasters this little filter took care of the problems,

    Verified purchase: YesCondition: NewSold by: rtl-sdr-blog

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