On 23 Mar, 21:29, "Bill Bowden" wrote:
How much improvement can I expect using Litz wire to wind a AM ferrite
Rod antenna as opposed to using solid copper wire?

Is it worth the trouble to obtain Litz wire, or can I expect almost
the same response at say 1 MHz using regular enamaled copper wire?

-Bill

Bill, to give you a better background so the answer is more
understandable is to think about what Litz wire does for you. When are
delving into lower frequencies than AM then the skin depth required of
the wire is much deeper that at higher frequencies and if the wire
diameter is relatively small then the resistance goes up because even
if there was enough skin depth the circumference is small. If the wire
was made of many strands insulated from each other then the resistance
goes down since the wires are in parallel.
As I stated earlier Litz wire is used below AM frequencies. So now let
us examine what wire resistance does at A.M. frequencies say on your
auto, do you think that you could tell the difference on the radio if
you replace the stainless whip with say a copper wire? No I don't
think so. So for starters the Litz wire is not relavent for your
frequency of use and 2 the conductivity of the whip will not affect
your radios performance unless you took liberties with the
conductivity and replaced your whip with a wooden stick
Art