KA7OEI's blog: Characterizing the RTL-SDR Blog (Version 3) for HF reception using the "direct" input.
I made a filter for my RTL-SDR to be able to hear 2m/NOAA in the city! : r/ RTLSDR
Measuring the Frequency Response of a Bandpass Filter with the RTL-SDR
RTL-SDR.COM Broadcast FM Band-Stop Filter (88-108 MHz Reject) Now for Sale + RTL-SDR V3 Dongle Availability
RTL-SDR Blog V.3. Dongles User Guide
RTL-SDR.com Broadcast AM Block High Pass Filter Now for Sale
Low Pass Filter for RTL-SDR Direct Sampling Mode
137MHz Bandpass filter for NOAA / Meteor Satellites | Lets Hack It
NEW* Multi Band Pass Filter HF+6m Upgraded version RTL SDR HAM Transceiver | eBay
RTL-SDR Tutorial: Measuring filter characteristics and antenna VSWR with an RTL-SDR and noise source
SAW band pass filter 315MHz 433MHz 868MHZ 1090MHz 902MHz 915MHz 1590MHZ FOR WIFI RTL SDR receiver Ham Radio Amplifier|Instrument Parts & Accessories| - AliExpress
Amazon.com: Broadcast AM Reject High Pass Filter (2.6 MHz HPF) by RTL-SDR Blog : Electronics
New product from FlightAware: A 1090 MHz Bandpass Filter for the RTL-SDR
band stop filter
RTL-SDR Filter Cards | Multichannel SDR Transceivers and Audio Arrays
filtering
RTL SDR Front End Filter Demonstration - YouTube
Direct Sampling 14 MHz Low Pass Filter and Galvanic Isolator for the RTL-SDR now for sale in Japan
RTL-SDR Filter Cards | Multichannel SDR Transceivers and Audio Arrays
bandpass filter
137 MHz BP Filter and Noise Source analysed with RTL-SDR Dongle
Radio Amplifier | Pass Filter | Oscilloscope Parts Accessories - 315mhz 433mhz 1090mhz - Aliexpress
filter
A self contained ADS-B Receiver using a Raspberry Pi and RTL-SDR