DIN 47232-1
DIN 47232-1 HF-connection 21/48 with flange, characteristic impedance 50 <Ohm>; mating dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1974
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1974