Richard Harrison wrote:

Unlike the usual transmission line, the wire is coiled to get
reactance into a small space. The effect is the same in that phase shift
is distributed along the length of the wire.

W8JI measured a 60 degree phase shift through a 100uH coil
at 1 MHz. Consider that at one end of that coil the
forward and reflected currents may be:

Ifor = 0.55 amps at zero deg, Iref = 0.45 amps at zero deg.

Inet = Ifor + Iref = 1 amp at zero degrees.

At the other end of the coil, the forward and reflected
currents may be:

Ifor = 0.55 amps at +60 deg, Iref = 0.45 amps at -60 deg

Inet = Ifor*cos(60) + Iref*cos(-60)

Inet = 0.275 + 0.225 = 0.5 amps at zero deg

Some items of note:

1. The forward current magnitude is the same at both ends
2. The forward current phase is shifted by 60 degrees
3. The reflected current magnitude is the same at both ends
4. The reflected current magnitude is shifted by -60 deg
5. The forward and reflected current phasors rotate in
opposite directions
6. The net current phase is unchanged through the coil
7. The net current magnitude is changed by 100% from 0.5
amps to 1.0 amps.
--
73, Cecil http://www.qsl.net/w5dxp