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On the emcomm note, I sometimes carry my 817 when I go backpacking. But given the number of people that flat out ignore QRP signals or randomly stomp on CW signals it really makes me wonder about the utility of it in an emergency situation. I suppose if I had an actual comm plan where a few stations would listen for me would make sense but it seems difficult to set that up with folks.
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This is purely anecdotal, given the short amount of time I've been in this hobby, but I've been pleasantly surprised several times when I've sent out a short blip, never even intending to get a response. It has happened on VHF, and on HF, where I've found an empty spot to send out a short test (typically listening for myself on a WebSDR), and someone came back with something like "I saw your signal [presumably on a panadaptor] and heard you here in XXX".
When I was spinning a dial, finding active signals felt like such a random event. Now that I can see everything within a particular band, and all I have to do is click on one, it increased my confidence a little bit that someone will hear me if I ever need to send a distress signal. I know I also listen to a lot of things that I never respond to - but would if they were in distress.