Ok, simple question. With 1.5 kw (measured at feedpoint) applied to the 50 ohm input of the (full sized) dipole / yagi... what is the PEAK V at the tips ? Assume 1:1 swr at the feedpoint. Same questi
I'd be interested in this. I think the answer is fairly straightforward, depending on how far the end is (electrically) from the feedpoint, but specifics escape me. 73, Pete N4ZR Check out the new R
Same question, but ant is not full size, and may have various forms of loading schemes used. (Say 50-80%) of full size. Ok, what about a single, full size 1/4 wave vertical ? Or a loaded vertical ? I
On 10/4/22 8:30 AM, Lux, Jim wrote: On 10/4/22 8:07 AM, jim.thom jim.thom@telus.net wrote: Ok, simple question. With 1.5 kw (measured at feedpoint) applied to the 50 ohm input of the (full sized)
Voltage at the end of an antenna: there's a thread on the EZNEC forum here: https://groups.io/g/eznec/topic/78616046#29 where several suggestions were made. Model it with a current source with I=0, a
Re: voltage at the end of an antenna I just re-ran a dipole at 7 MHz with 1 amp source, to see how it responded. Here are my recent notes: 1. Run everything with a Mininec ground. I used uninsulated
I may be crazy here, but, am I the only one that remembers using, and all the drawings in all the books of using, a meter to measure voltage, or current, along an antenna, starting at the feed-point,
Is this no longer a thing? Hi Kurt, There may have been illustrations to convey concepts of voltage and current distributions in textbooks, but actually making those measurements is another story. Th
You can't go wrong with good insulators at the ends of a dipole or the top of a hanging monopole. Long ceramics or glass, dogbones, rope a couple or more in series, help minimize loss when the suppor
Is this no longer a thing? Kurt The picture is probably an example as a teaching aid. In real life, the meter (and the leads) would affect the currents and voltages in the antenna, since the antenna
On 10/4/22 11:28 PM, Jim Brown wrote: On 10/4/2022 10:30 PM, KD7JYK DM09 wrote: I may be crazy here, but, am I the only one that remembers using, and all the drawings in all the books of using, a met
At one point I had a bunch of antennas in an attic; one of those being a 3-element 10m wire beam. The DIR/REF (switchable) of that 10m beam was right up against some sheetrock in the attic. I think
<You can't go wrong with good insulators at the ends of a dipole or the <top of a hanging monopole. Long ceramics or glass, dogbones, rope a <couple or more in series, help minimize loss when the sup