137 MHz BP Filter and Noise Source analysed with RTL-SDR Dongle
RTL-SDR Filter Cards | Multichannel SDR Transceivers and Audio Arrays
RTL-SDR Blog Broadcast FM Band-Stop Filter
RTL-SDR Filter Cards | Multichannel SDR Transceivers and Audio Arrays
low pass filter
Review of Nobu's HF Upconverter, Galvanic Isolator and 14 MHz Low Pass Filter
I made a filter for my RTL-SDR to be able to hear 2m/NOAA in the city! : r/ RTLSDR
KA7OEI's blog: Characterizing the RTL-SDR Blog (Version 3) for HF reception using the "direct" input.
SDR
Preamplifier and Bandpass filter for SDR
filters
Filter Ham WIFI Bluetooth for RTL-SDR Band Radio 2.4G receiver Pass 1575M BPF | eBay
Radio Amplifier | Pass Filter | Oscilloscope Parts Accessories - 315mhz 433mhz 1090mhz - Aliexpress
New product from FlightAware: A 1090 MHz Bandpass Filter for the RTL-SDR
low pass filter
HF BPF, band pass filter, RTL SDR HERMES ODYSSEY HiQSDR Red Pitaya transceiver | eBay
SAW band pass filter 315MHz 433MHz 868MHZ 1090MHz 902MHz 915MHz 1590MHZ FOR WIFI RTL SDR receiver Ham Radio Amplifier|Instrument Parts & Accessories| - AliExpress
RTL-SDR.com Broadcast AM Block High Pass Filter Now for Sale
A simple homebrew high pass filter | The SWLing Post