Radio Silence Clock

Print clock face , install a clock movement.use a standard Clock movement , Size : 56mm x 56mm , but Clock movements of different sizes can also be installed. Probably only radio operators, amateur radio stations, understand what this is. In telecommunications, radio silence or emissions control (EMCON) is a status in which all fixed or mobile radio stations in an area are asked to stop transmitting for safety or security reasons.The term "radio station" may include anything capable of t