The modeling i’ve seen plus my own has been +\~ 1 to 2dB for 50 - 70 ft vertical sections
-Charlie N1RR 401-742-7240 <(401)%20742-7240> 8AM - 9PM *E-mail*: [email protected] *Website*: www.n1rr.com *Youtube channel*: NovemberOne RomeoRomeo https://www.youtube.com/channel/UCPDzEf57Ad80cVKOiLZLB7w/videos On Sun, Jan 14, 2024 at 8:59 PM Steve Harrison <[email protected]> wrote: > Has anybody plotted the radiation patterns for inverted Ls on 160? I'm > particularly interested in those for relatively-low antennas, say 40 ft > max, over fairly-poor ground such as desert sand with the water table > perhaps 120 feet down. > > TNX, > > Steve K0XP > > > On 1/2/2024 6:56 AM, VE6WZ_Steve wrote: > > Today I uploaded a short 6 minute video showing how to use the Kiwi > radios located all over the world to test your transmit antenna. > > > > How is the front-to-back on your 4 square really performing? > > It the dipole or the vertical performing better on the DX path? > > Make an azimuth polar plot of your Yagi and see how it compares to > modelling. How does the pattern change across the band? > > > > This is not a new thing, but in this video I describe the method for > those that may not be familiar with it. > > No test equipment is needed. All that’s required is a PC sitting beside > your radio. > > > > Using the “S-meter” function on the Kiwi radios makes it quick and easy > to record signal levels from your transmit antenna. > > This method is far more accurate than trying to estimate a signal level > while watching a bouncing analog or digital S-meter. > > > > https://youtu.be/_BMeVJQ_cwI <https://youtu.be/_BMeVJQ_cwI> > > > > 73, es HNY to all > > Steve, VE6WZ > > _________________ > > Searchable Archives:http://www.contesting.com/_topband - Topband > Reflector > -- > NO on ARRL Bylaw 46!!! See my QRZ.com page at * > https://www.qrz.com/db/K0XP* > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
