Unusual call sign C-40 Clipper in the air over Arizona. ARSIS99.
Scope = oscilloscope. Old Oscilloscopes use vacuum tubes, like old CRT (Cathode Ray Tube) TVs.
Unusual call sign C-40 Clipper in the air over Arizona. ARSIS99.
Scope = oscilloscope. Old Oscilloscopes use vacuum tubes, like old CRT (Cathode Ray Tube) TVs.