Just for grins - did a EZNEC free space - perfect ground - with 80 m vertical
of #12 wire resonant at 3.55 mhz
then put another #12 quarter wave resonant wire at right angles to the top thru
1 megohm -1500 watts in to the vert
(says its 36.42 + j 0 at source ) says there is 3042 volts at angle -92.56 deg
across the 1 meg resistor .
If go to 10 megs it says 3051 at -93.6 deg and base goes to 36.23 +J 0.02
at 10K its says 1245 v at -29.7 deg and base goes to 41.62 + J 8.2
FWIW and grins --
Hank K7HP
----- On Apr 16, 2019, at 6:38 AM, Jim Miller <jim@jtmiller.com> wrote:
| Is there any data on what the voltage might be at the top of a full size
| 80m vertical at 1500w input?
| Is there some zener like ionization at the top that limits the voltage?
| If so is there a way to estimate the voltage at lower points along the
| vertical? I assume the scaling wouldn't be linear since starting at the
| bottom on 36 ohms (sorta) and going to "infinity" at the top would preclude
| that.
| Thanks
| jim ab3cv
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