Do you have a better idea than a diode probe to sample voltage at the
end of a dipole?

===============================

The only people person who needs to know the volts at the ends of an antenna
conductor such as a 1/2-wave dipole is the antenna designer. He has to
concern himself with insulators, breakdown voltages, the effects of corona
discharge and other such mundane (to other people) things.

Antenna designers, of which extremely few are needed in this small world,
being practical, sensible people who are obliged by professional
self-discipline to keep economy in time and materials foremost in their
minds, do not waste valuable resources researching the 'end-voltage'
question, purchasing latest space-age technology equipment just for a
one-off job, and employing teams of incompetent but highly-paid assistants
and workmen to make one solitary measurement.

Of course they don't !

In a few seconds they just do a little school arithmetic : -

Volts at end of dipole = Q * Vin / 2

Where Vin is centre-fed dipole feedline volts and Q is the dipole's resonant
Q factor.

Q is dipole inductive reactance divided by radiation resistance.

According to the ARRL handbook, Heaviside, Terman, me and countless others,
Q = Omega*L/R

Richard, you are familiar with these elementary notions. Do you not feel a
little saddened, like me, that amateurs, even future professional engineers,
are handicapped by having unnecessarily complicated, incorrect even, ideas
knocked into their heads by do-gooders on this newsgroup, trying to appear
knowledgeable, who should know better ?

I hasten to distinguish between accumulated PRACTICAL EXPERIENCE and
TECHNICAL BAFFLEGAB. The latter is easily recognisable.
===
Reg, G4FGQ