as for the picking up sound from the blimp in the video, I believe he would’ve picked that up without pointing it at the blip as well - the sound is weather forecast from polish radio and I found that my Ether sometimes picks up radio stations as well, usually in wide open spaces.
I am a bit surprised to find out there’s a version 2 already, I received mine not even a full month ago. I like that I can just turn it on and walk around without worrying too much about dialing in anything other than volume, but sometimes the high frequencies I get are not that pleasant, so HF dial could be useful.
as for the distance on which it picks up sound, I guess it depends on exact device emitting radiation or something (wavelength?)? maybe @EPTC could weigh in about his experiences, especially relating to the recording from Austin. Sometimes I get interesting stuff and I can’t determine the source at all (which would suggest it’s not nearby), sometimes I have to get really close to something to hear it (like lamps for example). Sometimes I don’t get anything at all.
My findings for now: trams are less fun than I thought they will be - I mostly get the sound of the engine. walking around the city it varies, mostly residential area where I live is not very interesting, neither is stairway and basement parking lot in my building, although I picked up some interesting stuff in nearby above ground parking lot and near police station (although I don’t think it was related to police station, to be honest). So far shopping mall was quite crazy and shortwalk around multiplex cinema was absolutely stunning, I have no idea what emitted the sounds I heard, but that was the best ambient/drone gig I’ve been to in like 2 years
railway station was great too, though a bit less varied