I noticed on my Flightaware site status page my daily tracked flights dropped significantly after July 26th. I went so far as to buy a new SDR device and created a completely new Piaware install on a fresh Raspbian OS. What I found was that I bought an external USB SSD external NVME adapter for a drive I had that I was not able to put into a new laptop on July 26th. I live about 40 miles north of O’Hare. For the last month I have been averaging about 15 planes tracked during the daytime hours. I just unplugged the USB NVME drive from my laptop (about 5 feet away from my PiAware device/antenna) and my tracked planes jumped immediately to over 65 planes. I need to shield that external SSD NVME drive. Hopefully, this will help someone else.
Last month I used a VHF Yagi to track down the source of a very strong signal at 145.01 MHz which was preventing me from connecting to an amateur radio Winlink VHF RMS node on that frequency. It turned out to be a 10/100 Ethernet switch I installed a few weeks prior when I relocated my ADS-B and UAT receivers. Replacing the switch not only eliminated the spurious 145.01 MHz signal, but my UAT baseline (noise) level dropped by about 2 dB which significantly increased my maximum UAT range. My ADS-B baseline (noise) level also dropped by about 2 dB and my ADS-B stats significantly improved.
Curiously, the radio frequency interference (RFI) turned out to be coming from the 10/100 switch itself, not from its power adapter.
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