@blake 19:04. Picked something up on my walkie, but it was upside down so my phone (also recording for it) couldn't hear it. I expect another transmission, or some other signal at least, at 19:30 and again at 20:04. Until then, I'm going to let my thing cool down.
In the meantime, I've set up an FRS channel list in the frequency manager. I need to adjust the bandwidth on all the ones prior to channel 15 to be 12500 instead of 50000...