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There's also a way to flatten the SWR on a 102" whip that works pretty well, I used to cut something a tech that I used to know would call a "beta loop". Basically you would take la single length of about maybe 8" of 12GA solid wire, I usually used insulated stuff like out of romex. Bend it into a V shape where the bend is in the middle of the two terminals. Then we would crimp ring terminals on the end one goes to ground/mount plate of antenna other goes to the center conductor.

I think this is the principle which its based on...

https://owenduffy.net/calc/shuntmatch.htm

I dunno how lossy these things are, etc, but for many years a friend of mine had a 102" on his truck on a mounting plate, and this is how we got the SWR to not be obnoxious. 1.5+ is horrendously terrible in modern gear, if there is any loss, at all, the advantage of not pissing off the radio or amp is worth it. He always had a killer signal with that thing with only 100W or so out of his 706mkII. We used a previou setup on his other truck but that one used a coaxial stub with a T connector, which was more broadbanded, I suspect that setup had more loss but the bandwidth was crazy out of that thing.

<blockquote data-quote="drgrant" data-source="post: 657526" data-attributes="member: 54092">There&#039;s also a way to flatten the SWR on a 102&quot; whip that works pretty well,&nbsp; I used to cut something a tech that I used to know would call a &quot;beta loop&quot;.&nbsp; &nbsp; Basically you would take la single length of about maybe 8&quot; of&nbsp; 12GA solid wire,&nbsp; I usually used insulated stuff like out of romex.&nbsp; &nbsp;&nbsp; Bend it into a V shape where the bend is in the middle of the two terminals.&nbsp; &nbsp; Then we would crimp ring terminals on the end one goes to ground/mount plate of antenna other goes to the center conductor.&nbsp; &nbsp; I think this is the principle which its based on... <a href="https://owenduffy.net/calc/shuntmatch.htm" target="_blank">https://owenduffy.net/calc/shuntmatch.htm</a>I dunno how lossy these things are, etc,&nbsp;&nbsp; but for many years a friend of mine had a 102&quot; on his truck on a mounting plate,&nbsp; and this is how we got the SWR to not be obnoxious.&nbsp; 1.5+ is horrendously terrible in modern gear,&nbsp; if there is any loss, at all, the advantage of not pissing off the radio or amp is worth it.&nbsp; &nbsp; &nbsp;&nbsp; He always had a killer signal with that thing with only 100W or so out of his 706mkII.&nbsp; &nbsp; &nbsp; We used a previou setup on his other truck but that one used a coaxial stub with a T connector, which was more broadbanded,&nbsp;&nbsp; I suspect that setup had more loss but the bandwidth was crazy out of that thing.</blockquote>

[QUOTE="drgrant, post: 657526, member: 54092"] There's also a way to flatten the SWR on a 102" whip that works pretty well, I used to cut something a tech that I used to know would call a "beta loop". Basically you would take la single length of about maybe 8" of 12GA solid wire, I usually used insulated stuff like out of romex. Bend it into a V shape where the bend is in the middle of the two terminals. Then we would crimp ring terminals on the end one goes to ground/mount plate of antenna other goes to the center conductor. I think this is the principle which its based on... [URL]https://owenduffy.net/calc/shuntmatch.htm[/URL] I dunno how lossy these things are, etc, but for many years a friend of mine had a 102" on his truck on a mounting plate, and this is how we got the SWR to not be obnoxious. 1.5+ is horrendously terrible in modern gear, if there is any loss, at all, the advantage of not pissing off the radio or amp is worth it. He always had a killer signal with that thing with only 100W or so out of his 706mkII. We used a previou setup on his other truck but that one used a coaxial stub with a T connector, which was more broadbanded, I suspect that setup had more loss but the bandwidth was crazy out of that thing. [/QUOTE]

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