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 <j...@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 | _________________ | Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector