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1. Topband: Re: Yaesu FT1000mp Mark V Key Clicks (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Tue, 10 Dec 2002 15:56:36 +0000; My bet is on the latter... this issue has been discussed way more than enough in public forums such as this that it is unlikely that the manufacturers and/or their US reps could not know about it. 73; /archives//html/Topband/2002-12/msg00153.html (9,211 bytes)
2. Topband: Spurious signals (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sun, 29 Dec 2002 15:38:27 +0000; Interesting... Shouldn't using a properly adjusted antenna tuner let the amplifier see a 50 ohm load impedance? 73 Phil NA4M -. .- ....- -- -. .- ....- -- -. .- ....- -- -. .- ....- -- -. .- ....- --; /archives//html/Topband/2002-12/msg00288.html (6,828 bytes)
3. Topband: chicken wire ground screen (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sat, 31 Aug 2002 02:24:23 +0000; I have seen more than one reference to adding solid plates or disks under verticals. ON4UN's Low Band book states "a solid metal plate of reasonable size right under antenna (vertical) can result in; /archives//html/Topband/2002-08/msg00120.html (7,856 bytes)
4. Topband: RE: Vactrols and Flag (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sun, 14 Apr 2002 20:29:53 +0000; To support my K9AY loops I used two pieces of wooden closet rod available at Home Depot. Comes in a couple different diameters and lengths up to about 16 ft I recall. I put two coats of marine spar; /archives//html/Topband/2002-04/msg00026.html (7,941 bytes)
5. Topband: Shortend Vertical model questions (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Wed, 13 Feb 2002 01:19:32 +0000; There was an article some years ago in QST I believe that gave some efficiency numbers of top hat loaded low band verticals with different top hat loading configurations. I seem to recall that a coup; /archives//html/Topband/2002-02/msg00058.html (10,067 bytes)
6. Re: Topband: Tuning elevated radials (score: 1): Author: Phil & Ann Duff <na4m@arrl.net>; Date: Fri, 16 Sep 2005 19:11:27 +0000; Ford - Dick Weber K5IU presented a paper in 1995 at the W5 DX Bash that included some work Dick had done in the area of elevated radial current imbalances with regards to remotely tuned low-band vert; /archives//html/Topband/2005-09/msg00042.html (9,469 bytes)
7. Re: Topband: Tuning elevated radials (score: 1): Author: Phil & Ann Duff <na4m@arrl.net>; Date: Sat, 17 Sep 2005 01:08:06 +0000; Hi Tom - Umm - I suppose K5IU would be best to defend his paper but... I think his paper and references seem to address radial current imbalances with regard to vertical antenna patterns with no ment; /archives//html/Topband/2005-09/msg00049.html (8,397 bytes)
8. Topband: Re Kinstar AM Radio Station Antenna Design (score: 1): Author: Phil Duff NA4M & Ann Duff <na4m@arrl.net>; Date: Thu, 25 May 2006 18:39:05 +0000; What diameter or radius should this solid metal plate be to eliminate/reduce this close-in loss on 160M?? 73 Phil NA4M .--. .... .. .-.. _. ._ ...._ _ _ Phil Duff NA4M & Ann Duff Georgetown, TX. ____; /archives//html/Topband/2006-05/msg00062.html (7,839 bytes)
9. Re: Topband: Four-Square Receiving Array (score: 1): Author: Phil Duff NA4M & Ann Duff <na4m@arrl.net>; Date: Tue, 30 Jan 2007 11:58:10 -0600; The DX Engineering web site has installation instructions in .pdf format for their receiving arrays with performance, site selection, ground system, and other installation information: http://www.dxe; /archives//html/Topband/2007-01/msg00465.html (8,180 bytes)
10. Re: Topband: K9AY loops (score: 1): Author: Phil Duff & Ann Duff <na4m@arrl.net>; Date: Sat, 03 Mar 2007 17:51:52 +0000; As long as the metal mast is not grounded it should be OK. I just rebuilt my K9AY loops using an aluminum mast with insulated clamps at the base and a short piece of PVC pipe on top of the metal mast; /archives//html/Topband/2007-03/msg00008.html (6,947 bytes)
11. Re: Topband: Inverted L (score: 1): Author: Phil Duff <na4m@arrl.net>; Date: Wed, 30 Nov 2011 03:40:16 +0000; Check eBay. I recently got a 1000ft spool of CommScope 75 ohm flooded (for underground burial) double shielded RG6 for $35. + shipping. 73 Phil NA4M -- -. .- ....- -- -. .- ....- -- -. .- ....- -- Ph; /archives//html/Topband/2011-11/msg00286.html (7,419 bytes)
12. Re: Topband: Inverted L (score: 1): Author: Phil Duff <na4m@arrl.net>; Date: Wed, 30 Nov 2011 15:23:53 +0000; One thing I learned from my recent antenna project using RG6 and F connectors was to buy quality environmentally sealed F connectors (Snap-N-Seal) and the proper RG6 cutting/stripping and Snap-N-Seal; /archives//html/Topband/2011-11/msg00296.html (8,716 bytes)
13. Re: Topband: RG-6/U & Snap n Seal connectors (score: 1): Author: Phil Duff <na4m@arrl.net>; Date: Mon, 12 Dec 2011 19:19:49 +0000; I just put some SNS connectors on flooded double shielded RG6 with the same tool. Strip the coax with the tool. Then fold the coax braid (but not the foil tape) back over the outside of the jacket be; /archives//html/Topband/2011-12/msg00267.html (8,350 bytes)
14. Re: Topband: RG-6/U & Snap n Seal connectors (score: 1): Author: Phil Duff <na4m@arrl.net>; Date: Mon, 12 Dec 2011 21:06:36 +0000; There are different color banded F SNS connectors for different RG6 shield configurations. But now there is a new style "Ultimate" SNS F connector with a red collar. These are spec'ed to work with: "; /archives//html/Topband/2011-12/msg00284.html (8,953 bytes)

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