Home |
Search |
Today's Posts |
#19
![]() |
|||
|
|||
![]()
what?
there are multiple answers? how many? "Roy Lewallen" wrote in message ... The point is that there's no "correct" answer. The voltage between two points separated in space with the presence of a varying magnetic field can be pretty much anything you'd like it to be -- the value depends, as others have pointed out, on the path taken between the points. Only Reg is able to suspend the principles of electromagnetics and confidently compute a single answer. Roy Lewallen, W7EL Richard Harrison wrote: Roy, W7EL wrote: "Which orientation would provide the "correct" answer?" Maybe none. We know what the correct answer is at the feedpoint. By trial and error we can find the most stable and least critical placement for our test lead. We can calibrate our voltage indicator with a sample at the feedpoint under the conditions that prevail. A test lead perpendicular to the balanced antenna suffers the least interference. It`s subject to imperfections and it`s subject to improvements to overcome the imperfections. In AM broadcasting we get away with hanging a sampling loop on each tower of a directional array to monitor both tower current and phase. It works well enough. Do you have a better idea than a diode probe to sample voltage at the end of a dipole? Best regards, Richard Harrison, KB5WZI |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Pls comment on this dipole | Antenna | |||
shortened dipole loaded | Antenna | |||
10m dipole and tuner | Antenna | |||
Comet VA30 (base loaded tri-band dipole 40/15/10) | Antenna | |||
Dipole connected to grounded receiver? | Antenna |