Deliver to UAE

For best experience Get the App

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

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

Q: Has anyone tried this (with sma-to-f adapters) for tv use? this would result in 50-ohm to 75-ohm mismatch. hard to find traps for tv use.

A 50 to 75 Ohm impedance mismatch is completely negligible on RX, so impedance mismatch won't be an issue.

Q: Does this have RG6 cable connections?

RG6 is a type of cable, not a connector. But I think you're meaning to ask if it uses F-Type or PAL type TV connectors? No this uses SMA connectors. Please see the product description for more info about the connectors it uses.

Q: What is the max RF input of this device?

I would recommend no more than 1W (30dBm), but we have reports of users using them long term with power levels of up to 20W (40dBm) without any issues.

Q: I am trying to target 108 mhz specifically. is there a schematic if i need to alter something? (of course, voids any returns) maybe from 107 to 109 m

Sorry, it wouldn't be practical to try to modify this filter to reject a very small band. Having opened mine, IIRC the filter has only a few sections, 3 or 4, in a pi configuration. That means it only has a handful of pole pairs in its transfer function. As the bandwidth narrows, the number of poles required to achieve the required response increases, pretty much as the inverse of the bandwidth. So for a bandwidth 1/10 as wide as the 20 MHz it's designed for, you might need a filter of roughly 10x complexity, as a starting point. That's not really practical, so the system engineer would probably recommend completely different architectures, such as a lowpass or highpass, which still would be quite difficult and require much higher Q (larger) resonators, such as cavities or exotic materials. The other approach would be a tunable bandpass at the frequency of interest. That's not exactly simple, but it's probably far easier. There may be other system options depending on the separation from 108 MHz, the degree of rejection required, the type of modulation involved, etc.

4.5/5

Product ID: 297530453

Secure Transaction

12 interest-free installments with tabby

Details

Compatible devices
Television
Connector type
SMA
Brand
RTL-SDR Blog
Connectivity technology
Radio
Input video compatibility
PAL

⚡<0.5dB Loss

📡50dB Attenuation

🔌SMA Connectors

Frequently Bought Together

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

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

RTL-SDR Blog Wideband Low Noise Amplifier Bias Tee Powered

Description

📻 Tune Out the Noise, Tune Into Clarity!

COMPACT LIGHTWEIGHT - Weighing only 18g, this filter is portable and easy to integrate into your setup.
MINIMAL INSERTION LOSS - Enjoy less than 0.5dB insertion loss from 0-1 GHz, ensuring optimal performance.
VERSATILE CONNECTIVITY - Equipped with SMA female connectors and a free SMA male to male adapter for easy setup.
TAILORED FOR ENTHUSIASTS - Designed specifically for SDR and radio scanner users, not for TV installers.
UNMATCHED SIGNAL CLARITY - Experience over 50dB of FM band attenuation for pristine signal quality.

The Broadcast FM Block Filter by RTL-SDR Blog effectively blocks the FM broadcast band (88-108 MHz) with over 50dB of attenuation, ensuring minimal interference for SDR and radio scanner enthusiasts. With an insertion loss of less than 0.5 dB from 0-1 GHz, this compact and lightweight filter is designed for optimal performance and easy connectivity.

Specifications

Brand	RTL-SDR Blog
Package Dimensions	10.01 x 6.5 x 1.5 cm; 18 g
Item model number	4330366327
Manufacturer	RTL-SDR Blog
Tuner Technology	FM, PAL
Are Batteries Included	No
Item Weight	18 g
Guaranteed software updates until	unknown

Have a Question? See What Others Asked

Has anyone tried this (with sma-to-f adapters) for tv use? this would result in 50-ohm to 75-ohm mismatch. hard to find traps for tv use.

Does this have RG6 cable connections?

What is the max RF input of this device?

I am trying to target 108 mhz specifically. is there a schematic if i need to alter something? (of course, voids any returns) maybe from 107 to 109 m

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving over 300 million shoppers across more than 200 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

AED 173

Duties & taxes incl.

UAEstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

12 interest-free installments with tabby

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

About Us

Customer Services

Customer Support

Regional Access

Legal & Policies

Social

Get the App

Point your camera to download the app

Customer support

We're available 24/7 to help you!