Nasa Marine High Frequency Active Antenna with Cable

Can be used on installations without a isolated backstay ~ gives similar performance to a 10m wire antenna

For direct connection to the HF3, HF3 ~M and HF3 ~W receivers.
Frequency range: 30Khz/30Mhz
Power Consumption: 20mA and 12V
Robust and waterproof
Overall height: 420mm
7 metres coaxial cable

Note: If you have an older unit which has a black rear panel label, you will require an additional power adaptor. If the panel is red, then the power cable is already built in to the unit.