Home |
Search |
Today's Posts |
|
#1
![]() |
|||
|
|||
![]()
Jerry Martes wrote:
"I figured you realized that the HP Vector Voltmeter wasn`t capable of providing the data needed for this discussion." More likely necessary. It is dead simple. You have a whip with a loading coil somewhere in the circuit under it. The r-f energy is reflected by the open circuit at the tip of the antenna. It must return toward the sender. There is no place else to go. Anything feeding the antenna is in the path. Volts and amps at any and all points along the way are acted upon by the incident and the peflected waves. Straight wire or coil, the effect is the same as there is a periodic variation in volts and amps due to the combination of the effects of volts and amps from both directions. Should the current at both terminals of a loading coil happen to be the same, it would likely be a rare coincidence. Best regards, Richard Harrison, KB5WZI |
#2
![]() |
|||
|
|||
![]()
Richard Harrison wrote:
Should the current at both terminals of a loading coil happen to be the same, it would likely be a rare coincidence. All one has to do to see radical changes in the currents at the ends of the coil is move the coil up and down a 3/4WL radiator. One can find a place where current at the top of the coil is five times the current at the bottom of the coil. That's just the way standing wave current works. Too bad there are so many myths and old wives' tales being spread about it by alleged "experts" who have forgotten EE201. -- 73, Cecil http://www.qsl.net/w5dxp |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Current in Loading Coils | Antenna | |||
FCC: Broadband Power Line Systems | Policy | |||
FS: sma-to-bnc custom fit rubber covered antenna adapter | Scanner | |||
Current in antenna loading coils controversy (*sigh*) | Antenna | |||
Current in antenna loading coils controversy | Antenna |