In addition, one could start with a reference - say 4 radials take a set of measurements, add four more and take a set of measurements, add eight more and take a set of measurements, etc. until one
In addition, one could start with a reference - say 4 radials take a set of measurements, add four more and take a set of measurements, add eight more and take a set of measurements, etc. until one s
On 12/2/2022 10:46 AM, Jeff Blaine wrote: At Dayton/Xenia antenna forum this year 2022, N9NB had a pretty interesting talk on low band verticals. The key take-away from that was that you could reaso
On 12/2/22 2:41 PM, Jim Brown wrote: On 12/2/2022 10:46 AM, Jeff Blaine wrote: At Dayton/Xenia antenna forum this year 2022, N9NB had a pretty interesting talk on low band verticals. The key take-awa
We all would! If you find a nice used one for under $1000 let me know! Oh, except that you'll buy it probably. And number 3, that with longer wavelengths and longer radials, as the radials diverge,
Author: Roger Parsons via TowerTalk <towertalk@contesting.com>
Date: Sat, 3 Dec 2022 14:34:15 +0000 (UTC)
Not really trying to sell anything, but I have an Stoddart NM17/27 in working order. Except that the cells in the battery pack need replacement. Of course it does require a calibrated antenna. And i
I had a roll of 2000ft 18GA enameled wire and I spread it as radials towards North. Complimenting current 36 radials. The impedance dropped 0.5 Ohms, indicating a failure. In the ARRL 160m contest a
Rob, K5UJ: "For US hams wanting to get a rough idea of where they land in the ground conductivity lottery, you can look at the high def. FCC map and either cheer or weep. But, keep in mind, the bound
Brian, Isn't the measured probe result only useful for near-field system efficiency analysis? By near-field I mean to obtain system efficiency within a wavelength or so of a vertical radiator. But fo
I seem to remember an article or product for using K3 (maybe others) radio audio output as a relative db calibrated field strength meter. Anybody have a link? Grant KZ1W Not really trying to sell any
Paul, W9AC: "Isn't the measured probe result only useful for near-field system efficiency analysis? By near-field I mean to obtain system efficiency within a wavelength or so of a vertical radiator.
My thought on this is that the very shallow angle grazing reflection from the dielectric discontinuity at the distant ground surface is pretty much 100%. The ground permittivity and conductivity vari
Only for Horizontal Polarization. For vertical pol, it's a lot more influenced by the soil properties, more to the point, the phase angle of the reflection varies with soil properties and angle, a lo
thanks all for the suggestions I have this data collected when I installed the verticals and radials, and will measure them again next holidays! 73, Jorge CX6VM/CW5W -- 73, Jorge CX6VM/CW5W _________