5
4015 MARINE AUTOMATIC ANTENNA TUNER
Antenna
On sailing vessels the antenna can either be an insulated backstay or a whip
antenna mounted vertically, usually on the stern. Best performance will be
achieved by using an insulated backstay as the radiating length will be longer
than that available when using a whip.
NOTES:
• The top insulator on the backstay should be approximately 300 mm from
the mast and the bottom insulator should be at eye level above the deck.
• The distance between insulators should be greater than 10 metres and less
than 35 metres.
• A whip antenna is generally used on small to medium sized power vessels.
There are different length whips to suit the vessel length.
Yacht: Backstay operates
as a long-wire antenna
Large Power Boat:
Whip Antenna
Backstay
