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IMO reading SWR using over a 100' feet of low loss feed line, I'm surprised you were not seeing even lower SWR readings with increased bandwidth. I use to read my SWR and analyzer on the Old Top One at the end of a working feed line too. I may have tried a tuned 1/2 wavelength jumper once with bad results as I recall, but for me the analyzer at the feed point was not practical.

With Eznec the model shows the match at the feed point and that will result in possible differences in match from a real antenna with a long feed line. My Antenna Work Sheets often show more backwidth with a long feed line.

I've heard every little bit of gain helps and I guess that goes for the other results too. Have you setup your antenna without isolating the mast so you can compare the difference?

This will take some modeling and checking out the tabular currents log in order to compare for your comment here. You could be right.

I seem to recall Homer telling me that DB has a graph or something that shows his model with varying effects in mast lengths inside and projecting below the hoop. Maybe Homer or DB will give us a heads-up rather than us having to read volumes of posts trying to find this info.

I will still take a stab at the idea, but it won't be as fancy and it won't be in color like DB's 4Nec2 produces.

<blockquote data-quote="Marconi" data-source="post: 593916" data-attributes="member: 903">IMO reading SWR using over a 100&#039; feet of low loss feed line, I&#039;m surprised you were not seeing even lower SWR readings with increased bandwidth. I use to read my SWR and analyzer on the Old Top One at the end of a working feed line too. I may have tried a tuned 1/2 wavelength jumper once with bad results as I recall, but for me the analyzer at the feed point was not practical.With Eznec the model shows the match at the feed point and that will result in possible differences in match from a real antenna with a long feed line. My Antenna Work Sheets often show more backwidth with a long feed line.I&#039;ve heard every little bit of gain helps and I guess that goes for the other results too. Have you setup your antenna without isolating the mast so you can compare the difference?This will take some modeling and checking out the tabular currents log in order to compare for your comment here. You could be right.I seem to recall Homer telling me that DB has a graph or something that shows his model with varying effects in mast lengths inside and projecting below the hoop. Maybe Homer or DB will give us a heads-up rather than us having to read volumes of posts trying to find this info.I will still take a stab at the idea, but it won&#039;t be as fancy and it won&#039;t be in color like DB&#039;s 4Nec2 produces.</blockquote>

[QUOTE="Marconi, post: 593916, member: 903"] IMO reading SWR using over a 100' feet of low loss feed line, I'm surprised you were not seeing even lower SWR readings with increased bandwidth. I use to read my SWR and analyzer on the Old Top One at the end of a working feed line too. I may have tried a tuned 1/2 wavelength jumper once with bad results as I recall, but for me the analyzer at the feed point was not practical. With Eznec the model shows the match at the feed point and that will result in possible differences in match from a real antenna with a long feed line. My Antenna Work Sheets often show more backwidth with a long feed line. I've heard every little bit of gain helps and I guess that goes for the other results too. [B][I]Have you setup your antenna without isolating the mast so you can compare the difference?[/I][/B] [B][I][/I] [/B] This will take some modeling and checking out the tabular currents log in order to compare for your comment here. You could be right. I seem to recall Homer telling me that DB has a graph or something that shows his model with varying effects in mast lengths inside and projecting below the hoop. Maybe Homer or DB will give us a heads-up rather than us having to read volumes of posts trying to find this info. I will still take a stab at the idea, but it won't be as fancy and it won't be in color like DB's 4Nec2 produces. [/QUOTE]

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