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1. Topband: Conditions here this AM (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Thu, 02 Jan 2003 08:15:20 -0800 (PST); working! 1210Z I also heard both JA's at exactly the same time here in eastern MA! It was definitely a skew path to the SW. This is a very difficult path from New England, which makes it kind of surp; /archives//html/Topband/2003-01/msg00016.html (7,336 bytes)
2. Topband: wave-tilt development at sea/land interface (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Sat, 4 Jan 2003 11:30:54 -0500; You can set up a model for such a thing in NEC (for example, EZNEC allows definition of two different ground media in the vicinity of an antenna), but the result may not be accurate. I once tried to; /archives//html/Topband/2003-01/msg00026.html (8,201 bytes)
3. Topband: JA paths this morning (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Mon, 20 Jan 2003 07:21:07 -0800 (PST); Speaking of skewing, there was some interesting propagation to JA just before local sunrise this morning. JA1HQT (569) and JA0MVW (449) were both short path to the northwest. However, JA8ISU (559-569; /archives//html/Topband/2003-01/msg00159.html (6,816 bytes)
4. Topband: Multiple Rcvrs on a Single Beverage (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Thu, 12 Dec 2002 20:29:51 -0500; amplify At KC1XX, we had the same issue when we redesigned our Beverage system--in this case, how to share a Beverage with four receivers. I came up with a homebrew solution for a passive 1:4 splitte; /archives//html/Topband/2002-12/msg00193.html (7,578 bytes)
5. Topband: ZL7C this morning (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Mon, 21 Oct 2002 07:34:36 -0700 (PDT); ZL7C was readable (RST 449) on 1830.5 but not workable from my location this morning while I was on from 1030Z until my sunrise at 1100Z. Signals were also skewed to the northwest. There were very fe; /archives//html/Topband/2002-10/msg00105.html (6,507 bytes)
6. Topband: 160m conditions - before and after solar peak (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Mon, 23 Sep 2002 07:48:43 -0700 (PDT); In comparing conditions before and after a solar cycle peak, I think it's worth looking at how the sunspot numbers build and decline around the peak. If I look at charts of the last three cycles, it; /archives//html/Topband/2002-09/msg00164.html (9,214 bytes)
7. Topband: 160m conditions - before and after solar peak (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Mon, 23 Sep 2002 07:59:38 -0700 (PDT); I should mention a useful link here: http://www.spaceweather.com/java/sunspot.html. The sunspot plotter feature on this Web page allows you to look at the sunspot numbers for 11 years at a time, cent; /archives//html/Topband/2002-09/msg00165.html (8,148 bytes)
8. Topband: polar route back in town (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Sun, 29 Sep 2002 13:23:33 -0400; W3BGN and The east coast perspective: I was at KC1XX last night, trying out the new antenna system, and I spent some time listening to W6/W7/W0 working into Europe. It was NOT an exceptional night fo; /archives//html/Topband/2002-09/msg00218.html (7,044 bytes)
9. Topband: VP9 on 160 (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Sat, 31 Aug 2002 14:05:46 -0400; also I received this info from W6PH: "Yes, I will be at VP9 for CQWW CW and ARRL CW for sure and maybe ARRL SSB. It's a good location and easy to get to, no hassles with customs, and licensing permit; /archives//html/Topband/2002-08/msg00122.html (7,058 bytes)
10. Topband: Switching in Extra Antenna Length (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Wed, 3 Jul 2002 21:21:02 -0400; Joe et al, You are mostly correct--Colatchco did have a 80/160 vertical. W1CF, who lived a few miles from me, did have a prototype that used a relay to switch in a 160m loading coil about 2/3 the way; /archives//html/Topband/2002-07/msg00031.html (9,782 bytes)
11. Topband: New 160m array going up at KC1XX (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Tue, 9 Jul 2002 22:26:40 -0400; Fellow TopBanders, For a quick preview of the new 160m array that's now being installed at KC1XX (Mason, NH), go to: http://www.kc1xx.com/gallery/New-160m-array The system consists of 3 inline vertic; /archives//html/Topband/2002-07/msg00055.html (7,782 bytes)
12. Topband: KC1XX 160m array FAQ (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Mon, 29 Jul 2002 07:44:16 -0700 (PDT); Ladies and gentlemen: My recent post about the new 160m array at KC1XX generated a number of questions. As a result I compiled the FAQ (below) that I thought would be of interest to this group. In ca; /archives//html/Topband/2002-07/msg00136.html (9,667 bytes)
13. Topband: Power Coupling in the USA (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Fri, 03 May 2002 13:31:35 -0700 (PDT); The variability in takeoff angle certainly adds another dimension to the problem here. The quantitative data on power coupling from NM7M and others (see the article by K9LA, for example, in the lates; /archives//html/Topband/2002-05/msg00025.html (7,981 bytes)
14. Topband: DSP and Digital Filter Effectiveness for Summer Static? (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Thu, 09 May 2002 13:27:57 -0700 (PDT); DSP rigs have been out to the effectiveness of summertime static? I never found the DSP filtering inside the FT1000MP to be of any use in dealing with static crashes. Part of the problem is that the; /archives//html/Topband/2002-05/msg00084.html (7,580 bytes)
15. Topband: DSP and Digital Filter Effectiveness for (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Thu, 9 May 2002 22:36:55 -0400; these Turning off the AGC is a very good idea. I've also done the back-to-back diodes and it's very effective. The diodes do introduce a lot of audio distortion when they go into heavy clipping. To f; /archives//html/Topband/2002-05/msg00089.html (8,312 bytes)
16. Topband: NE Dipole vs Vertical with Coupling Effects (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Fri, 10 May 2002 15:05:15 -0700 (PDT); is so close dipoles work I think the consensus in New England is that high horizontals, up 1/2 wave or more, outperform verticals on 80, at least for inland locations. My vertical array (located righ; /archives//html/Topband/2002-05/msg00102.html (8,946 bytes)
17. Topband: GR-1606-B (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: Tue, 02 Apr 2002 06:59:42 -0800 (PST); The GR-1606-B is definitely more accurate. In fact it is probably one of the very best instruments available for RF impedance measurements. Although the MFJ is very handy, its accuracy is not as good; /archives//html/Topband/2002-04/msg00003.html (7,300 bytes)
18. Topband: Topband Takeoff Angles (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: 6 Mar 2002 11:10:03 -0800; Uncle Sam research says it's necessary to focus I have a lot of experience with angle-of-arrival observations on 80m, which might (or might not) be relevant to 160m. It's based on the stacked 80m ant; /archives//html/Topband/2002-03/msg00052.html (8,195 bytes)
19. Topband: Antenna Measurements (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: 14 Mar 2002 07:32:08 -0800; A few comments on the General Radio bridge: I own one and I agree that it really is the most accurate instrument for antenna impedance measurements. For those of you who are not familiar with it, the; /archives//html/Topband/2002-03/msg00135.html (9,025 bytes)
20. Topband: Antenna Measurements (score: 1): Author: john.w1fv@telocity.com (John Kaufmann); Date: 15 Mar 2002 07:36:38 -0800; I forgot to mention in my earlier post that the G-R bridge I'm using is the Model 1606A. There is also a 1606B, which is probably close to the same thing. 73, John W1FV; /archives//html/Topband/2002-03/msg00147.html (7,028 bytes)

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