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Broadcast FM Block Filter (88-108 MHz Block) by

fls5.k-42

(37)

Private

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US $22.41

Approximately£17.11

Condition:

New

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Located in: Anaheim, California, United States

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Estimated between Fri, 26 Dec and Mon, 5 Jan to 94104

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30 days return. Seller pays for return postage.

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About this item

Seller assumes all responsibility for this listing.

eBay item number:146949589034

Last updated on 20 Nov, 2025 01:10:39 GMTView all revisionsView all revisions

Item specifics

Condition: New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ...

Compatible Devices: Laptop, Desktop, Radio Scanner

Package Dimensions LxWxH: 3.94x2.56x0.59 Inches

Part Number: 4330366327

Model Number: 4330366327

Weight: 0.04 Pounds

EAN: 0642419993872

ISBN: 0642419993872

Connector Type: Sma

Antenna Description: Radio

Connectivity Technology: Radio Frequency

Tuner Technology: Pal, Fm

UPC: 0642419993872

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

Number of Inputs

Color

Black

Supported Modes

SSB, CW, FM, AM

Band

UHF, VHF, FM, HF

Number of Outputs

Type

Block Filter

Dimensions

Weight

0.05 lbs.

Item description from the seller

About this seller

Joined Aug 2025

Usually responds within 24 hours

Registered as a private sellerThereby, consumer rights stemming from EU consumer protection law do not apply. eBay buyer protection still applies to most purchases.

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Detailed seller ratings

Average for the last 12 months

Accurate description

5.0

Reasonable postage cost

5.0

Delivery time

5.0

Communication

5.0

Seller Feedback (32)

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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
09 Jul, 2025Most favourable 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
07 Jan, 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 ... 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 reasonable. This is a really good item, if you need it.
Verified purchase: YesCondition: NewSold by: rtl-sdr-blog
by bilalek
04 Dec, 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. 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
18 Apr, 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 ... 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
Verified purchase: YesCondition: NewSold by: rtl-sdr-blog
by k0ip
09 Feb, 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, 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

Broadcast FM Block Filter (88-108 MHz Block) by

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Item specifics

About this product

Product Identifiers

Product Key Features

Dimensions

Item description from the seller

About this seller

fls5.k-42

100% positive Feedback•62 items sold

Detailed seller ratings

Seller Feedback (32)

Product ratings and reviews

Most relevant reviews

Excellent response in and out FM Band

A really nice FM band reject filter

It is useful

Improves across the entire spectrum when scanning with AirspyR2

It works

More to explore:

fls5.k-42

100% positive Feedback•62 items sold

Detailed seller ratings

Seller Feedback (32)

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Broadcast FM Block Filter (88-108 MHz Block) by

Shop with confidence

Item specifics

About this product

Product Identifiers

Product Key Features

Dimensions

Item description from the seller

About this seller

fls5.k-42

100% positive Feedback•62 items sold

Detailed seller ratings

Seller Feedback (32)

Product ratings and reviews

Most relevant reviews

Excellent response in and out FM Band

A really nice FM band reject filter

It is useful

Improves across the entire spectrum when scanning with AirspyR2

It works

More to explore: