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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+XM240\s+SWR\s+plots\s*$/: 9 ]

Total 9 documents matching your query.

1. [TowerTalk] XM240 SWR plots (score: 1)
Author: "W7ZZ" <w7zz@wavecable.com>
Date: Sun, 25 Mar 2018 14:47:55 -0700
The XM240 will have an SWR of 2:1 or less over either the CW or SSB portion of the band if tuned according to Cushcraft's dimensions. The "mid" setting is intended to straddle the high end of the CW
/archives//html/Towertalk/2018-03/msg00217.html (6,669 bytes)

2. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Sun, 25 Mar 2018 15:17:21 -0700
It's important to remember that SWR is NOT an indication of antenna performance. It ONLY indicates a match to the feedline as measured in the shack.  It does not tell us that the antenna has gain, no
/archives//html/Towertalk/2018-03/msg00218.html (8,199 bytes)

3. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Sun, 25 Mar 2018 15:39:53 -0700
Jim is exactly right (as usual). When I first got my MonstIR up, I took advantage of the fact that I could adjust the length of the three elements individually. Just to prove a point, I tuned up the
/archives//html/Towertalk/2018-03/msg00220.html (8,069 bytes)

4. [TowerTalk] XM240 SWR plots (score: 1)
Author: "Jim Thomson" <jim.thom@telus.net>
Date: Tue, 27 Mar 2018 12:44:48 -0700
< When I first got my MonstIR up, I took advantage of the fact that I could adjust the length of the three elements individually. Just to prove a point, I tuned up the antenna the usual way for CW (a
/archives//html/Towertalk/2018-03/msg00225.html (8,169 bytes)

5. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Tue, 27 Mar 2018 13:48:18 -0700
The tuner doesn't affect the pattern, nor does the driven element tuning. The antenna acted like a dipole at the upper end of the band. Rick N6RK FR /gain drop off at upper end of band ? Jim VE7RF __
/archives//html/Towertalk/2018-03/msg00228.html (7,922 bytes)

6. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: <john@kk9a.com>
Date: Tue, 27 Mar 2018 21:24:15 -0500
Lossy traps may contribute to this exceptional bandwidth. John KK9A The XM240 will have an SWR of 2:1 or less over either the CW or SSB portion of the band if tuned according to Cushcraft's dimension
/archives//html/Towertalk/2018-03/msg00234.html (7,920 bytes)

7. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: <john@kk9a.com>
Date: Tue, 27 Mar 2018 21:25:57 -0500
I should have said lossy loading coils may contribute to this exceptional bandwidth. John KK9A Lossy traps may contribute to this exceptional bandwidth. John KK9A The XM240 will have an SWR of 2:1 or
/archives//html/Towertalk/2018-03/msg00235.html (8,035 bytes)

8. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: VE6WZ Steve <ve6wz@shaw.ca>
Date: Tue, 27 Mar 2018 22:27:49 -0600 (MDT)
The large BW and 50 ohm feed point of the XM240 is partly due to the loading coils, but mostly because of the reflector element tuning. With any Yagi, as the max FB QRG gets closer to the minimum SWR
/archives//html/Towertalk/2018-03/msg00237.html (10,722 bytes)

9. Re: [TowerTalk] XM240 SWR plots (score: 1)
Author: "Ed Sawyer" <sawyered@earthlink.net>
Date: Thu, 29 Mar 2018 13:14:49 -0400
John KK9A stated "Excellent point Steve and very well stated. The Cushcraft is a good upgrade to an inverted V but it definitely has compromises. I use OptiBeam 40m beams which have high Q coils and
/archives//html/Towertalk/2018-03/msg00244.html (8,792 bytes)

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