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1. Topband: Beverage frustrations - corrosion of contacts (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Fri, 28 Jun 2002 13:22:10 -0400; " If you are really looking for perfect dry housing, use a housing with several athmosphere high overpressure. I mean the really high pressure in the enclosure will stop any building of moisture... t; /archives//html/Topband/2002-06/msg00058.html (8,073 bytes)
2. Topband: dsp afterthought (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Sun, 12 May 2002 01:18:40 -0400; This kind of thinking gets me going! From my layman point of view, could we utilize a high speed dsp discriminator circuit to identify ANY signal that is over a user-selectable level, then re-insert; /archives//html/Topband/2002-05/msg00111.html (7,926 bytes)
3. Topband: Shunt feeding a tower with side mounted yagi (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Tue, 28 May 2002 17:09:55 -0400; _______________________________________________ Shielding & robbing both indicate what is happening. The RF current is just looking for the path of least resistance. So the impedance of each element; /archives//html/Topband/2002-05/msg00190.html (10,812 bytes)
4. Topband: Re: DX Pileup Practices (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Sat, 2 Mar 2002 12:11:26 -0500; While it may seem politically incorrect to consider the operating practices of the DX operator, he is the key to controlling any pileup! If he ever ONCE, works two pile-ees in sequence, without QRZ,; /archives//html/Topband/2002-03/msg00028.html (8,986 bytes)
5. Topband: TEN-TEC IS LISTENING! (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Thu, 7 Mar 2002 15:15:56 -0500; Gentlemen: Just read Ten-Tec's writeup on their new Orion transceiver. (tnx W4GD). With crystal & dsp IF filtering, adjustable rise/decay key-click control and several improvements that optimize 160m; /archives//html/Topband/2002-03/msg00065.html (7,985 bytes)
6. Topband: MFJ power line noise receiver or alternatives? (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Mon, 11 Mar 2002 17:54:58 -0500; noise sniffer: attenuation unit & 3-element beam for 135mHz. The old Radio Shack receiver was no longer available, so I bought the newer model, Jetstream, cat. no. 12-615. Upon testing the unit vs. t; /archives//html/Topband/2002-03/msg00107.html (8,348 bytes)
7. Topband: beverage above water (slow wire) (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Mon, 18 Mar 2002 00:10:29 -0500; is put a HUGE mass of polyethylene under our beverages to get the velocity factor down to 0.66, (anyone know the velocity factor of distilled water? its 0.85 or 0.90, as I recall) You may have hit o; /archives//html/Topband/2002-03/msg00166.html (8,347 bytes)
8. Topband: EZNec Fool (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Tue, 19 Mar 2002 13:44:14 -0500; Alright already, Thanks for all the humorous emails on a slow wire 100ft Beverage. Add me to the list of Eznec fools. When I downloaded EZNec Demo, phased two mini adcock arrays together on a 20 ft b; /archives//html/Topband/2002-03/msg00177.html (7,607 bytes)
9. Topband: Low Band DXing (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Wed, 13 Feb 2002 12:04:36 +0000; I was at Leo's, AA4MM shack & got in radiation resistance argument. I tried to prove my point, using his copy of "Low-Band DXing". It was so full of highlighted lines, I somehow knew that I had lost; /archives//html/Topband/2002-02/msg00063.html (6,502 bytes)
10. Topband: Rotatable Beverage (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Wed, 13 Feb 2002 13:59:01 -0500; With all the recent antenna modeling & RX antenna interest, I finally decided to download the EZNEC Demo program. Thanks to K6SE's sending me some Eznec models of Flags, etc, I now am beginning to ha; /archives//html/Topband/2002-02/msg00068.html (8,720 bytes)
11. Topband: Shortend Vertical model questions (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Wed, 13 Feb 2002 17:03:46 -0500; Hi Phil.........Avoid the interfering waves loss of sloping topload wires by adding a topload above your beam. I added a 20 ft aluminum pipe with 80 ft of copper wire in series & zig-zagged the wire; /archives//html/Topband/2002-02/msg00072.html (8,789 bytes)
12. Topband: Re: Noise and reception (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Wed, 20 Feb 2002 22:47:25 -0500; __________________________________________ As I sit here trying to hear with my vertical, surrounded by power lines, I am ready to try anything. A little desperation helps. 73, Doug "Yon NX4D hath t; /archives//html/Topband/2002-02/msg00123.html (7,286 bytes)
13. Topband: Directional Receive Antennas (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Mon, 25 Feb 2002 12:46:24 -0500; Very interesting Larry. Using my 5 hours of modeling experience with EZNEC Demo, I had found a 3 element vertical array with the standard cardioid azimuth pattern, but it showed a much lower elevati; /archives//html/Topband/2002-02/msg00210.html (9,098 bytes)
14. Topband: RE: dedicated topband transceiver (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Thu, 17 Jan 2002 20:50:14 -0500; I use the FT-1000MP on topband, and now, with great receiving ability. Living in a subdivision with all aerial power lines assures plenty of local buzzing noise on 160m. And this winter there is alot; /archives//html/Topband/2002-01/msg00130.html (8,400 bytes)
15. Topband: ewe (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Sat, 26 Jan 2002 12:41:38 -0500; A Model WF-1 Remote S-meter Monitor greatly simplifies all this. Adjust the carbon pot while using a cell or cordless phone in commo with the WF-1 (wife) at the rig for null S-meter readings. Ewe nee; /archives//html/Topband/2002-01/msg00205.html (7,967 bytes)
16. Topband: Last-ditch effort: elavated radiation... (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Tue, 7 Aug 2001 00:18:05 -0400; Gentlemen: Answers to my post asking about a top fed 160m vertical almost convinced = me to forget it & shunt-feed the 60ft tower with beam. But further = study & the burning desire to get as much hi; /archives//html/Topband/2001-08/msg00024.html (9,578 bytes)
17. Topband: Fw: Grounding of beam elements (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Thu, 9 Aug 2001 13:42:47 -0400; Gentlemen: Here is Force-12 beam as top hat info for any needing it. Thanks Natan for quick response. Force-12, you're the greatest! 73, Doug NX4D Hi Doug, You can ground all the elements except for; /archives//html/Topband/2001-08/msg00030.html (7,191 bytes)
18. Topband: Dual Tophats (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Mon, 13 Aug 2001 16:14:44 -0400; Gentlemen: Am finalizing plans using existing 60 ft tower with beam as short, top-loaded 160m vertical. I need the tophat to exhibit approximately 50 elec. degrees to realize maximum current/gain fro; /archives//html/Topband/2001-08/msg00053.html (7,464 bytes)
19. Topband: RE: Dual Tophats (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Wed, 15 Aug 2001 08:13:07 -0400; Thanks to all who responded. Summary: Adding a second beam above first one had little or no effect on resonant freq or SWR. Improvements suggested that I can effect here are: Add RF chokes to the ins; /archives//html/Topband/2001-08/msg00061.html (6,851 bytes)
20. Topband: Top Fed Vertical (score: 1): Author: NX4D@mpinet.net (Doug Waller); Date: Mon, 30 Jul 2001 23:06:59 -0400; Gentlemen: I need some advice on a project I now have time to undertake. Some good = info at this point could save a lot of tower cranking. (including = "forget it.....no free lunch", hi) Presently I; /archives//html/Topband/2001-07/msg00081.html (7,898 bytes)

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