The SW2-124 is a stainless steel 1/4 wave antenna suitable for all air band applications on a 5/16" fitting. The SW2-124 works best when mounted onto a bracket that is as close to the surface of the ground plane as possible such as the BMS mount. (Z brackets are not recommended with this antenna), comes with a UL12C Base, 3.6m cable & BNC connector as a pack. 

Recommended Accessories - A12C, or UL12C with BMB or Mag12C

• Broadband - Receives 118MHz to 136MHz, transmitting covers almost 4MHz tuned to 122MHz to 126MHz. Please note that this antenna is tuned to favour the low end of the Airband and if possible the SWR should be checked
• No need to tune - no SWR meter needed - Can be tuned for any other part on the airband e.g. 127MHz
• Stainless steel
• Can use a spring  SAL or SAO but the antenna will need to be re-tuned on the spring