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21. Topband: RX 4 squares (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 9 Aug 2012 04:41:36 -0700 (PDT)
Hi I would like to put up a RX 4 square array for 80/160 but the only place (just) over a half wave away from resonant verticals on those bands would be surrounding (15m out from) a 70' tower with 2
/archives//html/Topband/2012-08/msg00144.html (6,533 bytes)

22. Topband: HiZ 4 squares (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 9 Aug 2012 19:02:38 -0700 (PDT)
OK thanks for all the replies. I looked at the HiZ 4 square manual and they have some detailed phasing info for a specific frequency but it's not clear to me how this works on multiple bands. Could y
/archives//html/Topband/2012-08/msg00147.html (6,540 bytes)

23. Topband: Fw: "Missing" Buried Radials for a Monopole (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Fri, 24 Aug 2012 19:47:41 -0700 (PDT)
That's a very interesting study. What about elevated counterpoise systems using a similar number of radials e.g. 20-30 and a perimeter wire? Are common mode feed line currents still difficult to supp
/archives//html/Topband/2012-08/msg00300.html (8,895 bytes)

24. Topband: electrical wavelength (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Sun, 9 Sep 2012 20:09:32 -0700 (PDT)
Hi it's still flooded here but I wanted to fire up one of my verticals by itself on 160 and feed it with a half wave of Comscope RG6 since I don't have enough 50 ohm line to reach it. I have a AIM 41
/archives//html/Topband/2012-09/msg00034.html (6,679 bytes)

25. Topband: RX epiphany? (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Wed, 12 Sep 2012 20:07:01 -0700 (PDT)
Hi well I've only been QRV since June here but the QRN level seems noticeably worse than my previous QTH in the W6 desert even though my current QTH is also quiet, limited by only propagated QRN. Man
/archives//html/Topband/2012-09/msg00068.html (8,152 bytes)

26. Re: Topband: RX epiphany? (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 13 Sep 2012 16:56:45 -0700 (PDT)
Hi thanks to all for the replies. Sorry I wasn't clear my QTH is northern Thailand. The point I was trying to make is that even though it is a noisy part of the season it is apparently less noisy at
/archives//html/Topband/2012-09/msg00081.html (7,784 bytes)

27. Re: Topband: RX epiphany? (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 13 Sep 2012 18:55:33 -0700 (PDT)
Hey Dave! (he was my first QSO as a novice 43 years ago) I am located at 20 degrees N. Actually my choice is between a 160m Xmit 4 square and concentric 80/160m 8 circle RX arrays. __________________
/archives//html/Topband/2012-09/msg00084.html (10,162 bytes)

28. Topband: intersecting ground radials (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Tue, 18 Sep 2012 00:09:40 -0700 (PDT)
Hi I would like to place monopoles for 160 and 80m bands 30m apart causing their ground radials to intersect. The radials are #20 bare copperweld (since I happen to have 4000m) that would be laid out
/archives//html/Topband/2012-09/msg00144.html (6,771 bytes)

29. Topband: ground characteristics (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Wed, 3 Oct 2012 00:35:58 -0700 (PDT)
Hi I have no idea if it is a fact but on page 9-18 in ON4UNs book it is stated without any further explanation -  "It is impossible to make a direct measurement of ground characteristics". __________
/archives//html/Topband/2012-10/msg00115.html (6,468 bytes)

30. Topband: dipole height (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Mon, 29 Oct 2012 02:38:22 -0700 (PDT)
Hi it's an interesting discussion about the dipoles. I want to put up an inverted vee dipole for 160. I can put the apex at 15,30,45 or 60m and have >90 degree apex angle. The ground is very good and
/archives//html/Topband/2012-10/msg00366.html (6,523 bytes)

31. Topband: feed choke (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Tue, 30 Oct 2012 21:37:08 -0700 (PDT)
Hi thanks for all the replies I have decided to put the dipole up at the 45m level.  One more question - I will run the feed line up inside the tower so is a choke still needed at the feed point? Tha
/archives//html/Topband/2012-10/msg00379.html (6,438 bytes)

32. Topband: corona noise (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Fri, 16 Nov 2012 15:31:04 -0800 (PST)
Hi would a static discharge wick mounted on the lightning rod be helpful? They seem to work well for aircraft AM radios. _______________________________________________ Topband reflector - topband@co
/archives//html/Topband/2012-11/msg00262.html (6,336 bytes)

33. Re: Topband: QRP/Poor antenna stations ARRL160 (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Mon, 3 Dec 2012 20:03:22 -0800 (PST)
Outstanding idea Dave!  Set a minimum number of QSOs/Watt to qualify and the Cuthbert Cup will become a coveted award. ________________________________ From: DAVID CUTHBERT <telegrapher9@gmail.com> T
/archives//html/Topband/2012-12/msg00096.html (8,875 bytes)

34. Re: Topband: HS0ZEE (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 31 Jan 2013 18:00:18 -0800 (PST)
Hi I'm afraid that Sheridon has a huge local QRN problem at his suburban QTH, although he told me the other day that he now has some type of noise cancelling device that has improved things somewhat.
/archives//html/Topband/2013-01/msg00278.html (7,473 bytes)

35. Topband: Out of phase verticals (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Mon, 3 Jun 2013 02:27:10 -0700 (PDT)
Hi I am installing an 8 way rx array and will be taking down the nearby unfinished xmit 4 square. I plan to relocate one of these tx verticals about 100m from the nearest rx element as an omni tx ant
/archives//html/Topband/2013-06/msg00004.html (7,208 bytes)

36. Re: Topband: Lightning QRN season? (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Mon, 22 Jul 2013 22:22:47 -0700 (PDT)
Soon if you are in North America, where the inter tropical convergence zone is near its closest approach and beginning to move south. Be happy you don't have to receive in the tropics. The inverted v
/archives//html/Topband/2013-07/msg00024.html (7,259 bytes)

37. Re: Topband: 160M Rhombics (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Sat, 27 Jul 2013 17:20:41 -0700 (PDT)
W6AM was a fabulous ham station and a great ham. With a web site like yours I wouldn't be accusing others of over hyping. RIP Don. W0BTU: rhombics. Such as: "The W6AM station was legendary around the
/archives//html/Topband/2013-07/msg00105.html (10,014 bytes)

38. Topband: Signal attenuation from foliage near 160m antenna (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Thu, 1 Aug 2013 20:33:42 -0700 (PDT)
Interesting study which suggests not placing a 160m vertical closer than 12' to a tree, if feasible. There are certainly lots of vertical radiators working well amongst towers. We won FD 4 years in a
/archives//html/Topband/2013-08/msg00005.html (7,202 bytes)

39. Re: Topband: Tree conductivity (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Sat, 3 Aug 2013 18:28:54 -0700 (PDT)
Yes I am no doubt in that group. So do good conductors in the near field re-radiate most of the coupled energy (eg a parasitic element) while poor conductors dissipate it as heat? I would think poor
/archives//html/Topband/2013-08/msg00017.html (7,843 bytes)

40. Re: Topband: (no subject) (score: 1)
Author: Bob Kupps <n6bk@yahoo.com>
Date: Tue, 6 Aug 2013 01:35:12 -0700 (PDT)
How close are the trees to the verticals Carl? Every autumn (when the fluid is leaving the trees) and every spring (when the fluid is coming up again) I have to go out and adjust the phasing in my 2
/archives//html/Topband/2013-08/msg00073.html (6,973 bytes)

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