Hi guys. All the navy and coast guard ships I have ever seen, and been on many, all have vertical antennas for HF. They usually have two, on opposite sides, one on starboard and one on port. I have n
ships are always turning....making knowing which way a directional antenna was pointed too complex - it is "ever-changing" - only when at anchor would you know your bearings...or have a clue as to wh
It says two things: a beam's life in rough seas would be approximately five minutes, and omnidirectional performance is critical. Because it would be mounted on a rapidly rotating platform (the ship)
*ships are always turning....making knowing which way a *directional antenna was pointed too complex - it is *"ever-changing" - only when at anchor would you know your *bearings...or have a clue as t
Ted K6HI stated... Sure does... the environmental conditions make a yagi/LPA a BAD choice: wind-driven rain entering traps high winds (hurricane takes out antenna) lack of space ( a Hy-Gain 3-30Mhz l
Speaking as an ex-Navy radioman, I can tell you that had there been beams onboard my ship, I would have become a cook. Maintaining verticals? Not much of a problem--we had 8 or 10 of them spaced aro
Certainly for contemporary military and Coast Guard ships, the vertical is the solution for all the stated reasons in this discussion. However, until very recently commercial shipping used long wires
Actually, there are inexpensive gyro based antenna positioning systems marketed to the recreational boat crowd for DirecTV applications. I imagine that larger versions are in common use on ships for