[Lowfer] Loop Antennas for Transmitting

[Ed Phillips]

Bill Ashlock wrote:
> 
> Les,
> 
> I can show you numerous text books that say "the transmitting loop has
> little practical for transmitting". I can also find numerous reports of poor
> performance for the TX loop at any frequency. I have also seen numerous
> reports of excellent performance for TX loops. I don't believe the truth is
> halfway between but a matter understanding how to use them.
> 
> At 185k the radiation resistance is about 100 times lower compared to a
> vertical of equal size, and this is a bad characteristic. So the current in
> the loop has to be 10 times higher to make up for this....  and this is
> doable if you understand how to deal with the variables..... and they are
> quite different than those for a vertical. In fact the loop is far less
> susceptible to outside forces and is much easier to install.  .....and far
> less unsightly, if not invisible.
> 
> My next loop article attempts to explain in detail how to set up an
> effective TX loop from A-Z. Right now I'm stuck on trying to mathematically
> explain how I can be measuring more far field radiation than I should, per
> the std radiation resistance equations!
> 
> Bill

	That will be interesting.  What are you going to do about the resulting
bandwidth for a really low-loss design?

Ed