Radios used in hiking throughout the recent snow storm in the Pacific Northwest. On the left is a Radioddity GM-30 radio that is the most recently purchased unit. For Chinese radios, I prefer the Anytone AT-D878UV, but the GM-30 is one fifth the price. Next is some older Motorola TalkAbout, possibly a 62xx series, but it does not say, so it may be newer vintage. On the right is my old Garmin Rino 530, pre-SD card version. All three worked well in temperatures hovering around 25 degrees Fahrenheit, and over distances of about a mile apart.