The SMD4-67 is of all welded aluminium construction
The feed point is protected by an ABS cap, with the internal PTFE based cable construction providing excellent intermodulation performance (-150dBc)
The stainless steel SMD41-67 is electrically identical to its aluminium counterpart and is recommended for corrosive environments, this antenna is available on request
All of the SMD4 series antennas are directly DC grounded for superior lightning protection and the reduction of precipitation static noise.