Our whole radio shack of voice and coded transmitters and receivers, though not the teletype machines we used, from the USS Gallant MSO 489, would probably fit in my pocket today. The radioman rating and shoulder patch are both historical; the patch featured a cluster of sparks. Somehow I managed to change from radioman to journalist with a quill pen patch. I worked very hard, mostly on midnight to 0800 watch, but was never the crackerjack radio jockey some my shipmates were. As I recall, we were deep in transistor technology, not vacuum tubes (that was WWII and Korea). Still, it is remarkable how small some of the tube gear was for aircraft and small craft. (My change of job rating is quite a story, but too long here.)