[Elecraft] Magnetic Loops - Stan

dw bw_dw at fastmail.fm
Mon Aug 3 12:36:19 EDT 2009


Hi Stan,
I've built a number of mag loops.
I've used aluminum tubing, copper, and hard-line coax as the main
sections.
I purchased a dead AEA HI-Q loop unit on ebay for cheap years ago and
pulled the capacitor off it.

The ERP is off-course compromised compared to a dipole.
However, its advantages are:
- small size
- super quite
- Vertical or Horizontal polarization
- In vertical polarization it is broad-side directable.

Using 2-3" copper fully soldered together as the main body will increase
your ERP.

MFJ has a box loop which uses a wire.
But a ham can pull their wire off and replace with copper pipe.
In the right size diameter, one and work both 40 & 30 meters no problem.

Have fun with your design!!!!  :)
Duane
N1BBR
-- 
 Bw_dw at fastmail.net



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