[Elecraft] Magnetic Loop question

Fred Jensen k6dgw at foothill.net
Thu Oct 20 19:23:10 EDT 2016


Ummm ... there may be a confusion with loops that are electrically large 
... like a circumference of 360 deg.  They are E-field antennas [just 
like a half-wave dipole or 1/4 wave vertical] and the feed point 
determines the polarization.  Polarization matters at VHF and above, but 
at HF, the received polarization will be random and changing due to 
Faraday Rotation in the ionosphere.

I believe this thread is about "small magnetic loops," whose 
circumference  is only a handful of degrees, such as the AlexLoop [a 
resonant transformer], and others directly fed.  The feed point does not 
matter for small magnetic loops.

73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

On 10/20/2016 4:27 AM, Steven Dick wrote:

> The vertical  loop can be horizontally polarized by feeding it in the
> middle of the top or bottom edges.
> It can be vertically polarized by feeding it in the middle of the
> vertical edges.



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