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i can't get a straight answer from the necmen, i ask how eznec handles transmission-line currents but get no answer, i don't see them on the sigma or astroplane models, only one set of currents are displayed where are the transmission-line mode currents ??

we know transmission-lines in nec should be handled as a transmission-line yet we have folk modeling beta matched 1/4waves ignoring the beta should be handled as a transmission-line,

the beta or hairpin ect is not some bent bit of wire that makes up the extra length of the short radiator, its a transmission-line shorted at the far end with a defined electrical length and characteristic impedance,

if the source of radiation from the sleeve whatever the magnitude is due to transmission-line mode currents as stated in the arrl open sleeve article,
how can eznec include them when you don't model the sleeve as a transmission-line ?,

i do agree very much with henry,
few cbers are capable of doing a meaningfull test, we have videos of two antenna switch flickers that prove it all over youtube,

i also agree with the trend to convince yourself one antenna is superior especially if it costs more or is perceived by your peer groupe as superior,

i await the return of the mighty big-mac,

bob

<blockquote data-quote="bob85" data-source="post: 479212" data-attributes="member: 18">i can&#039;t get a straight answer from the necmen, i ask how eznec handles transmission-line currents but get no answer, i don&#039;t see them on the sigma or astroplane models, only one set of currents are displayed where are the transmission-line mode currents ??&nbsp;we know transmission-lines in nec should be handled as a transmission-line yet we have folk modeling beta matched 1/4waves ignoring the beta should be handled as a transmission-line,&nbsp;the beta or hairpin ect is not some bent bit of wire that makes up the extra length of the short radiator, its a transmission-line shorted at the far end with a defined electrical length and characteristic impedance, if the source of radiation from the sleeve whatever the magnitude is due to transmission-line mode currents as stated in the arrl open sleeve article,how can eznec include them when you don&#039;t model the sleeve as a transmission-line ?,i do agree very much&nbsp; with henry,few cbers are capable of doing a meaningfull test, we have videos of two antenna switch flickers that prove it all over youtube, i also agree with the trend to convince yourself one antenna is superior especially if it costs more or is perceived by your peer groupe as superior,i await the return of the mighty big-mac,bob</blockquote>

[QUOTE="bob85, post: 479212, member: 18"] i can't get a straight answer from the necmen, i ask how eznec handles transmission-line currents but get no answer, i don't see them on the sigma or astroplane models, only one set of currents are displayed where are the transmission-line mode currents ?? we know transmission-lines in nec should be handled as a transmission-line yet we have folk modeling beta matched 1/4waves ignoring the beta should be handled as a transmission-line, the beta or hairpin ect is not some bent bit of wire that makes up the extra length of the short radiator, its a transmission-line shorted at the far end with a defined electrical length and characteristic impedance, if the source of radiation from the sleeve whatever the magnitude is due to transmission-line mode currents as stated in the arrl open sleeve article, how can eznec include them when you don't model the sleeve as a transmission-line ?, i do agree very much with henry, few cbers are capable of doing a meaningfull test, we have videos of two antenna switch flickers that prove it all over youtube, i also agree with the trend to convince yourself one antenna is superior especially if it costs more or is perceived by your peer groupe as superior, i await the return of the mighty big-mac, bob [/QUOTE]

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