The downloadable program for the radio that Radioddity offer does’t work. It is not Chirp compatible, at least until the moment of this post. If you are planning on programming frequencies other than GMRS for listening purposes, you have to do it manually. The program doesn’t support them. You have 10 zones with 100 entries each. The radio works on one zone only. When you change zone, it only let you access that zone so you need to plan these zones well. The program doesn’t support copy/paste or insert/delete rows making it very difficult to work with specially if you make a mistake. I have not been successful with the GPS feature but I haven’t tried to much either. The radio is not bad in my opinion. It is underdeveloped. As it stands, I don’t recommend this radio.