On Feb 7, 8:38*am, Cecil Moore wrote:
John Smith wrote:
The winding to the 50 ohm source will be half the turns of the 100 ohm
winding--and there is no electrical connection between windings--i.e.,
the 50 and 100 windings are separate on the core.

Or it could be wound as an autotransformer.
--
73, Cecil *http://www.w5dxp.com

I still prefer just a simple coax series transformer.
As an example, for a 40m loop, about 22 ft of
75 ohm coax will do the trick.