Review of Nobu's HF Upconverter, Galvanic Isolator and 14 MHz Low Pass Filter
Low Pass Filter for RTL-SDR Direct Sampling Mode
RTL-SDR Tutorial: Measuring filter characteristics and antenna VSWR with an RTL-SDR and noise source
NEW* Multi Band Pass Filter HF+6m Upgraded version RTL SDR HAM 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 Filter Cards | Multichannel SDR Transceivers and Audio Arrays
HF BPF, band pass filter, RTL SDR HERMES ODYSSEY HiQSDR Red Pitaya transceiver | eBay
I made a 137MHz NOAA bandpass filter. Here are some pictures of the filter and spectrum! : r/RTLSDR
filters
filter
SDR
filtering
KA7OEI's blog: Characterizing the RTL-SDR Blog (Version 3) for HF reception using the "direct" input.
New product from FlightAware: A 1090 MHz Bandpass Filter for the RTL-SDR
low pass filter
RTL-SDR Filter Cards | Multichannel SDR Transceivers and Audio Arrays
Preamplifier and Bandpass filter for SDR
bandpass filter
