RTL LNA Power

[Jonseyt23]

Hi @geckoVN these are the posts I’m referring to

RTL-SDR LNA mod

I don’t know if anyone is interested, but I’ll post this regardless. I have used for a while the RTL-SDR LNA. First was fed via Bias-T from my Airspy R2, but I didn’t feel “safe” in case of a short on the cable. Then I fed it with 4.5V via a Bias-T power injector. The power supply is a cheap wall wart, and I could not regulate the output voltage in stable and definite steps. 4.5V This is the LNA: New Product: RTL-SDR Blog 1090 MHz ADS-B LNA Well, due to my long (and mismatched impedance with…

And

Ran into a bad RTL-SDR filtered preamp

I’ve been struggling for some time now to get my second (test) feeder up and running. This feeder is a mirror image of my usual feeder with a Jetvision A3 antenna, Pi 4, Airspy mini, RTL-SDR filtered preamp and Sysmocom cavity filter. Everything works but I’m seeing less traffic as usual even if I use the same antenna as my main feeder. I’ve been swapping several items around in my quest to find the culprit and it turned out to be the RTL-SDR filtered LNA, an item I just received 2 weeks ago. …