Hmm, I am not sure what that would mean, an analyzer that can see near field effects.
The in line analyzers indirectly might show near field effects simply by being interfered with by strong RF nearby. Almost anywhere on the boat that is away from structure and conductors will have the same HF efficiency, if a full size HF antenna, or nearly so. To really have differing efficiency, you would have to be able to move things at least a quarter to half wave to see an effect. I am thinking you mean a pleasure boat and not a larger yacht. Most small boats just don't give you many options. You probably need to place the vertical well aft, out of the way of sail apparatus if a sail boat. On a motor boat, you could be anywhere along the center line. Probably the most important efficiency aid is to have wide straps going to a keel ground plate or plates. The more metal in contact with the water the better. Most sail boats have a very effective/ efficient antenna in loading the back stay guy of the mast as a sloper, rather than using a true vertical. Such an antenna will have some vertical and thus low angle take off component off the beam of the boat. Stuart K5KVH _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
