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NEW: Mobile Antenna Testing Results Part 1

Updates:

Oct 2004: finishing up the mobile antenna shootout

July 2004: Added antenna testing and more photos

June 2004:
Laptop crash so I decided to completely redo the site..

Antennas

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When operating portable the trick is to have an antenna that is light weight, easy to setup and of course: Works! These are some of the antennas I am trying now in preparation of a domestic DX trip (more on that in future web pages... Vertical, Skyhook, and of course A Dipole!

Vertical

When portable I typically use a “vertical dipole ”. I purchased the MFJ telescoping pole and then cut a dipole for 10M. when I want to operate a different band I slap on an extension to suit the band required. I tuned it with the MFJ 259 and being resonant I dont need to use a tuner. Results? This works.. but not very well. Since the wire is longer than the mast, I used on the second floor to get good results. The top bent over and looked like it was going to break. The whole thing looked it would fall apart at any moment. 

Well just as I was going to play with this the IK-STIC2 was developed. I went ahead and built this antenna.

Skyhook

This is a classic antenna that is easy to make, but needs a Tuner. I feed this with openwire line (just the radio shack cheap stuff) and a tuner. I started off making a simple skyhook using the directions here ($4 special).. I used my autotuner with an external 4:1 balun feeding the ladder line.Another one to try is the End Fed Zeipp (See this page by W4RNL)

Dipole

I had thought about putting together a W3FF “Buddipole (homebrew version, commercial version) But the problem is that the homebrew version just did not look like it could standup to travelling and lots of use. I certainly dont want to fixing it when on the road! The commercial version looks great: but it is a bit out of my price range for an antenna. Upon thinking about this some more, it seems that I can simply build this by using the SD20 poles: use two of them instead of the Radio Shack Whips. So I decided to build a rotatable dipole based upon this design.When playing around with ideas, I purchased some SD20poles from WorldRadio.

 

Links:

 

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Copyright 2004 by Philip P. Thompson, All rights reserved.