Today I created a quick demonstration video of the sensitivity of SCARP using a moderate signal. I then step the signal strength down three times. The signal starts at -84.5 dBm, and the signal ends at -114.5 dBm, which is equivalent to 0.42 microvolts. Admittedly, it's hard to hear and scratchy at that very low power.
The FAA calls for a minimum sensitivity of 10 microvolts with 6 db of signal-to-noise ratio on the audio. While the last demonstration at 0.42 microvolts clearly doesn't hit that mark for s/n ratio, I believe the other examples at 84.5, 94.5, and 104.5 dBm clearly show it. They are 13 microvolts, 4.2 microvolts, and 1.33 microvolts, respectively.
Summary: SCARP exceeds the reception sensitivity of the FAA DO-186b MOPS standard for VHF aircraft communication equipment. It does this by a wide margin. 10 microvolts is required and 1.33 microvolts was demonstrated. 0.42 microvolts still produces readable audio.
If you like SCARP and the technical work I am demonstrating, please share it with a friend! You are our best sales department. We need your help.
Here's the video:
I was listening to your podcast about your varible frequency radio. Most of the problem come when you wnat to listen to different frequencies near you location for different airports which are close together, and I think your product addresses. that. But here's the problem, what happens when several frequencies transmit at the same time or the same frequencies have multiple people transmitting at the same time. Is there are way to record all the transmissions, (same frequencies and different frequencies) that would then be prioritized in the the order they were received and play them back so no transmission would be block, clipped, or truncated by the transmission you are currently listening to. These brodcast could be played back…