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141. Re: Topband: CQ 160 WW (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>(by way of Bill Tippett<btippett@alum.mit.edu>); Date: Wed, 01 Feb 2006 05:19:40 -0500; I had this problem Sunday morning. An East coast big gun was calling CQ an hour after his sunrise on ~1815 KHz just a few hundred Hz above me. His S7 clicks were covering the JAs who were calling me.; /archives//html/Topband/2006-02/msg00008.html (8,413 bytes)
142. Re: Topband: 160 FROM GUANTANAMO BAY CUBA (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 2 Feb 2006 08:05:27 -0800; Interesting observations, Jose. Beverages are reputed not to work over highly conductive ground, but sounds like that wasn't your problem. I wonder if anyone has studied how beverages play over low-; /archives//html/Topband/2006-02/msg00045.html (9,300 bytes)
143. Re: Topband: 2 Queations (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 2 Mar 2006 22:41:31 -0800; Performance is generally not too good below 5 MHz, Jim. To squeeze 7 1/2 octaves of bandwidth out of the magic-T splitter you have compromise the low-end performance a little to squeeze and get good; /archives//html/Topband/2006-03/msg00028.html (8,284 bytes)
144. Re: Topband: how to set up a Skype receiving beacon (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 9 Mar 2006 07:29:31 -0800; Yes, I agree, this is almost as bad as people who move to the country where there is no QRN. What challenge is there in that? I understand that some of these guys can actually hear the DX they are ca; /archives//html/Topband/2006-03/msg00062.html (10,417 bytes)
145. Re: Topband: FW: how to set up a Skype receiving beacon (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 9 Mar 2006 08:22:53 -0800; I think the DXCC rules state that only QSOs made from within any given DXCC country count towards a given award total. This naturally limits the remote receiver problem to the borders of one's own co; /archives//html/Topband/2006-03/msg00063.html (9,762 bytes)
146. Re: Topband: FW: how to set up a Skype receiving beacon (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 9 Mar 2006 20:50:34 -0800; That's what I try to do here, but I have to confess that sitting on the sidelines during a good opening because your noise level is too high to exploit it can be discouraging. I've operated from rura; /archives//html/Topband/2006-03/msg00070.html (9,456 bytes)
147. Re: Topband: RG6 (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 19 Mar 2006 09:46:23 -0800; Stick with the RG6, Ed. It will be cheaper and the difference in loss compared to RG8X will hardly be measurable (about 0.3dB on a 300' run according to N6BV's TLW program). Commscope sells 1000' rol; /archives//html/Topband/2006-03/msg00134.html (7,226 bytes)
148. Re: Topband: QST Jun 06 RX Loop (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Wed, 17 May 2006 18:03:00 -0700; Yuri, I am not very good at field theory (too few brain cells), but I do know how to invoke Kirchoff's current law. If you first assume that the current in the closed loop formed by the inner conduct; /archives//html/Topband/2006-05/msg00040.html (10,869 bytes)
149. Re: Topband: Elevated Radials (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sat, 5 Aug 2006 20:55:00 -0700; I have the same problem here, Ken. I think that would be an interesting case study. Keep the top of the vertical radiator fixed and then raise the base along with a fixed number of radials to see if; /archives//html/Topband/2006-08/msg00042.html (9,821 bytes)
150. Re: Topband: Totally Deaf (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 24 Sep 2006 13:59:26 -0700; Perhaps we need a better word or phrase for indicating that a station isn't hearing terribly well as this is useful information to include in a DX spot (e.g. be prepared for frustration cause station; /archives//html/Topband/2006-09/msg00099.html (8,944 bytes)
151. Topband: Effect of Trees (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 3 Dec 2006 10:20:55 -0800; I know this has been discussed before, but mostly in the context of verticals in heavily wooded areas. I am wondering if anyone has thoughts on having just a couple of trees very close to a vertical; /archives//html/Topband/2006-12/msg00018.html (7,962 bytes)
152. Re: Topband: Effect of Trees (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 3 Dec 2006 14:34:17 -0800; The counter argument to that, Eddy, is that although a metal tower can distort the pattern, it won't neccessarily convert a large portion of TX power into heat, whereas anything that is a lossy condu; /archives//html/Topband/2006-12/msg00027.html (9,018 bytes)
153. Re: Topband: Effect of Trees (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 3 Dec 2006 19:29:20 -0800; Chet, There is a diagram of the proposed radial layout at the following link: http://www.dellroy.com/W4EF's-Ham-Radio-Page/Radial_Project/Radial.htm The back yard is fully populated as shown in the d; /archives//html/Topband/2006-12/msg00036.html (9,354 bytes)
154. Re: Topband: Give it a try (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Mon, 4 Dec 2006 05:48:59 -0800; Well the tree and the antenna are already there. About the only thing left in the "try it and see" category is to cut the trees down, but since they are on my neighbors property, that would almost ce; /archives//html/Topband/2006-12/msg00045.html (8,338 bytes)
155. Re: Topband: Telescoping Fiberglass Mast (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sat, 9 Dec 2006 08:31:15 -0800; I bought one of these recently to hold up the far end of my top loading wire for my 160 meter inverted-L: http://www.wonderpole.com/custom_telescoping_poles.html It is a bit flimsy when fully extende; /archives//html/Topband/2006-12/msg00110.html (10,082 bytes)
156. Re: Topband: KH8Q and band condx (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 10 Dec 2006 14:03:12 -0800; Does anyone know if the KH8 team changed their antenna system. Prior to this morning I understand they'd had very little success working any US stations. This morning they were actually quite readabl; /archives//html/Topband/2006-12/msg00121.html (8,057 bytes)
157. Re: Topband: Antenna Analyzer (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sun, 24 Dec 2006 13:43:39 -0800; If you are lucky, George, the BC stations causing you interference will reduce power at sunset. That's the way it is here at my QTH. After sunrise, I have to use the BC notch filter accessory with my; /archives//html/Topband/2006-12/msg00275.html (8,676 bytes)
158. Re: Topband: beverage lobes (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Mon, 8 Jan 2007 20:02:14 -0800; I think the fly in the ointment on this debate could be ground conductivity. A beverage looks more or less like 1/2 of a 2 wire transmission line over a ground plane with the 2nd half of the transmis; /archives//html/Topband/2007-01/msg00135.html (11,793 bytes)
159. Re: Topband: DXpedition Advice for Anyone (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Thu, 11 Jan 2007 21:48:30 -0800; There is a station in Arizona who is very wide. When I told him about it, he got his friend (another prominent call on 160) to vouch for him that his signal was "clean". It is laughable, because I ca; /archives//html/Topband/2007-01/msg00237.html (8,436 bytes)
160. Re: Topband: 160 meter Jamming and OTHR (score: 1): Author: "Michael Tope" <W4EF@dellroy.com>; Date: Sat, 20 Jan 2007 07:38:23 -0800; Has anyone tried contacting Scot Red, K0DQ. He is a contester, a retired admiral in the U.S. Navy, and has had some fairly high positions within the Bush 43 administration. It be interesting to see w; /archives//html/Topband/2007-01/msg00333.html (9,940 bytes)

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