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here is anything but a typical 1/4 wl. (ground mounted) vertical antenna.

over average soil: R=100, K=12 / X=0 / 2.7600 meters / 9.0051 feet / 0.251 wl. /
27.192 mhz. / 39.2 ohms load impedance / 93.19% antenna radiation efficiency / 1.275:1 vswr. Rrad=36.8 ohms, Rloss=2.4 ohms

hare's a question for all of you who have been infected with vswrmania. let's begin with a situation that is far more typical than most are aware of. you see a 1:1 swr when measuring a physically short inductively loaded antenna. it must be 50 ohms, right? what if the actual radiation resistance of the antenna is only 25 ohms and there is also an equal amount of loss resistance, also 25 ohms?

let me tell you. given 100 watts of input to the line, under these conditions, half of that power is being delivered to the antenna and the other half is being dissipated in the system loss resistance, such as it is. who would ever suspect such a chased after specification (swr) could leave you with half the power that was put into the line?

what do you know about your antenna network?

<blockquote data-quote="freecell" data-source="post: 761956" data-attributes="member: 30">here is anything but a typical 1/4 wl. (ground mounted) vertical antenna.over average soil: R=100, K=12 / X=0 / 2.7600 meters / 9.0051 feet / 0.251 wl. /27.192 mhz. / 39.2 ohms load impedance / 93.19% antenna&nbsp; radiation efficiency / 1.275:1 vswr.&nbsp; Rrad=36.8 ohms, Rloss=2.4 ohmshare&#039;s a question for all of you who have been infected with vswrmania. let&#039;s begin with a situation that is far more typical than most are aware of. you see a 1:1 swr when measuring a physically short inductively loaded antenna. it must be 50 ohms, right? what if the actual radiation resistance of the antenna is only 25 ohms and there is also an equal amount of loss resistance, also 25 ohms?let me tell you. given 100 watts of input to the line, under these conditions, half of that power is being delivered to the antenna and the other half is being dissipated in the system loss resistance, such as it is.&nbsp; who would ever suspect such a chased after specification (swr) could leave you with half the power that was put into the line?what do you know about your antenna network?</blockquote>

[QUOTE="freecell, post: 761956, member: 30"] here is anything but a typical 1/4 wl. (ground mounted) vertical antenna. over average soil: R=100, K=12 / X=0 / 2.7600 meters / 9.0051 feet / 0.251 wl. / 27.192 mhz. / 39.2 ohms load impedance / 93.19% antenna radiation efficiency / 1.275:1 vswr. Rrad=36.8 ohms, Rloss=2.4 ohms hare's a question for all of you who have been infected with vswrmania. let's begin with a situation that is far more typical than most are aware of. you see a 1:1 swr when measuring a physically short inductively loaded antenna. it must be 50 ohms, right? what if the actual radiation resistance of the antenna is only 25 ohms and there is also an equal amount of loss resistance, also 25 ohms? let me tell you. given 100 watts of input to the line, under these conditions, half of that power is being delivered to the antenna and the other half is being dissipated in the system loss resistance, such as it is. who would ever suspect such a chased after specification (swr) could leave you with half the power that was put into the line? what do you know about your antenna network? [/QUOTE]

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