I took a flight this morning and when I was about 2200 ft out my screen said " lost reception ,no transmission " and the screen showed the last view before reception stopped. . It was my understanding that after 10 seconds of lost reception it would automatically RTH. I waited for about 30 seconds and nothing changed. As I walked around I got transmission back and hit RTH. The screen showed enough satellites, but the signal strength was poor, 1 bar. I hit RTH when I lost transmission, but obviously because there is no reception, the RC is not going to trigger RTH. Should I have waited longer and see what happens when I loose reception ?