... base Stainless steel whip 631 7~50MHz HF Antenna with spring base comming PL259 connectorStainless steel whip 631Model ... Frequency Range--------------------- 7.05/10.1/14.2/18.2/21.1/27/29.6/50.5 ... professional antenna manufacturer.Our main products include HF, CB, VHF&UHF, GSM&CDMA, GPRS, 3G/UMTS, 2.4G, 3 ... .5G, 5.8G antennas, etc. (2).OEM, ODM and small orders are ...