WebQuick SWR Calculator for Vertical and Dipole Ham Radio Antennas. Here’s a really simple way of double checking how to much to trim your antenna elements. You only need to type in the numbers in the Cyan boxes. For … WebA Multi-band Dipole or Doublet antenna system is a single length wire antenna useable on virtually any band where a tuner can provide a match. Efficiency is very good when the antenna is 0.4 wavelengths long or longer. ... Why you don't want to use coaxial cable when the SWR is high. For each 100 feet of coaxial cable, you lose half your power ...
swr meter - High SWR on a new dipole antenna - Electrical …
WebThe increasing SWR means that some of the transmitted power is reflected back to your transmitter. There are several possible explanations for the effect: The ice is not completely dry and it partially short circuits (through some resistance) the two arms of your dipole. WebJul 26, 2024 · Well, one answer is to simply check your VSWR by transmitting on a higher frequency, if your VSWR goes down, you need to lengthen your radiating element for the frequency you want a lower VSWR for, conversely, if you get a lower VSWR when transmitting on a lower frequency than the frequency you wnat to use the antenna on, … the pickled fig hessle
Dipole antenna height affects SWR : r/amateurradio - Reddit
WebFeb 13, 2024 · High SWR means it doesn't leave the antenna, but bounces back to the radio (and bounces off the radio back to the antenna and back to the radio...and a little escapes at each end on each bounce). Low efficiency ironically can improve SWR, but it means that the energy is turned into heat instead of radiating out of the antenna. WebHigh SWR on a new dipole antenna. 33 views Nov 17, 2024 High SWR on a new dipole antenna ...more. ...more. 1 Dislike Share Save. Roel Van de Paar. 90.7K subscribers. … WebMar 8, 2024 · This is commonly used to operate 15m using a 40m dipole, or 10m using the 7th harmonic resonance with an 80m dipole. This was more convenient with tube transmitters that could tolerate a higher SWR, however. A dipole resonant at 7.15 MHz has a 3rd harmonic resonance around 21.7 MHz, where the impedance is about 105 ohms. the pickled duck menu