[Elecraft] Re: antenna question

[Mychael Morohovich]

>>Because of limit space I'm thinking of a 67ft wire from the roof to a tree<<

Sounds as though Tom and I have a similar arrangement. I use what is called a W3EDP antenna which essentially consists of an 85' wire and 17' counterpoise. With the KAT2 I find that the antenna loads easily on all bands, with the exception of 15 meters (I cure that with the addition of a series inductor between K2 and antenna). I do use an artificial ground to tune my counterpoise, although this purportedly is not necessary.

The antenna does not have to run in a straight line; mine has a 12' vertical section running from the entry point at the shack up to the roof line. From there it traverses my back yard to a halyard attached to the top of a large tree. 

The counterpoise can be tossed onto the floor or routed around the shack however convenient. There will be voltage present on it, especially at its end, so care should be taken to insulate it well or keep it clear of kids and pets or even curious wives. I run mine outside and then down into the basement where I can attach it to the house ground with a croc clip at its end. (By doing this and reversing the counterpoise and W3EDP I am able to easily tune up 160 meters. While I admit to only a few QSOs on top band, my first took place with an op 900-1,000 miles away.) 

This antenna, as well as a "gallimaufry" of others is described in great detail in the excellent book "Practical Wire Antennas" by John D. Keys- G3BDQ. 

Hope that this helps,

Mychael Morohovich /AA3WF
K2#1025