KJM A430-VSS VHF Antenna, 3', Stainless Steel

so when it comes to selecting a VHF antenna to go with your fixed mount radio there's a variety of ones to choose but most of them are identified with a single number that indicates their performance the number is the DB rating of the antenna some antennas have a 3 DB rating others are a 6 DB and others are a 9 DB now the DB rating indicates sort of how focused the energy is when you transmit using the radio so for example if you have a 3 DB antenna it tends to have sort of a big doughnut shaped transmission pattern now that's actually good it doesn't have as much punch laterally from the antenna but if the boat heels like on a sailboat or a small powerboat and waves you won't clip the transmission as boats get bigger you generally use taller and taller antennas which have more focused radiation patterns so the standard power boat antenna would be a 6 DB antenna and if you've got a real