In article .com,
"bpnjensen" wrote:

This is fascinating, and brings up some questions -

Is this coil double wrapped? I cannot quite tell from the photos.

On a ferrite rod assembly like this, the coil(s) wrap around only a
small portion of the rod. Noting this, will the rod still transfer
signal along its entire length? In other words, can a shorter rod be
used as effectively?

Is there any value to wrapping the coil(s) more widely spaced along the
length of the ferrite?

The core is material that has a higher permeability to magnetic lines of
force than the air it is in so yes the signal will pass through the
length of the rod.

Winding the turns farther apart will reduce the inter-winding
capacitance and the coil will have the ability to resonate at a high
frequency.

--
Telamon
Ventura, California