Lol did you get it after the scare ?
Lol. Just a coincidence. Good timing I guess.
Well if it is a walkie talkie, it's definitely an old one so a time traveler is possible. The antenna looks like it's about 8-10 inches. If it's a key fob code grabber, the joke is on him because I have a Ford Fusion. All the cars are kept in detatched garages anyway. This happened around 9:30pm. Not super late but generally too late for any sort of reputable company to be knocking on doors.
Live in the middle of the city in Southern California so the hunting/animal tracking is unlikely. The fact that he knocked multiple times on my door and neighbor's door made me think he probably wasn't doing any sort of malicious scanning. Neither of us were home and he left after about five minutes. He looked at the thing a couple times but didn't write anything down.