FMkit is not really that good at explaining how any of his products actually work (or what they even do sometimes) to those of us who are not super technically minded
Basically the beacon transmits 3 tones, each at different power levels. The closer you get, the more tones you hear. You need to block the walkie on one side and turn it until it gets reception then you know whcih way the beacon is.
My big problem is that whn Im within about 100ft of it and theres tall grass, I can not find it. I foudn my tricopter one day by complete accident after i gave up after looking with the walkie for an hour. I was about 100 ft from it in the grass. I walked over it on my way out, thats how I found it. The beacon REALLY needs to make a very loud audible chirp every 3rd time it tones or something. So if you are close you can find it.
On the beacon with the mic, how long is the beacon delay on the default setting after powering it on?