HF3 has the power supply for the HF antenna built in since 2005 (Red label on back of radio chassis).
If you want to use the antenna for another receiver you will need this power adaptor to provide 12V.
Spare Target Log display unit
Spare 1 metre long fused power cable
Spare blanking cap for log sealing the log skin fitting
Spare mounting blocks and screws for masthead
Spare paddlewheel and spindle, simple fit for all Clipper, Target and Cruiser Logs.
Dust cover for Clipper Navtex, Weatherman, AIS Radar,
Meteoman and MOBi man overboard indicator.1
Spare Cruiser Log display unit
Spare Target Depth display unit