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Total 10 documents matching your query.

1. [TowerTalk] 80/75 M Antennas (score: 1)
Author: JamesDuffey@comcast.net (James R. Duffey)
Date: Sun May 18 19:21:29 2003
Paul - I am sure that you have something twisted about; "I'm still searching for an effective 80 meter DX antenna that can offer the lowest signal to noise ratio..." You want a high signal to noise r
/archives//html/Towertalk/2003-05/msg00206.html (6,867 bytes)

2. [TowerTalk] TA-33 Mosley Senior-Choke Balun needed? (score: 1)
Author: "James R. Duffey" <JamesDuffey@comcast.net>
Date: Tue, 13 Jul 2004 17:43:48 -0600
Bill - You asked "We know that common-mode currents on the coax CAN cause problems -- and since it's so easy to prevent this, why not do it?" It is good engineering practice to use a balun whenever a
/archives//html/Towertalk/2004-07/msg00424.html (8,050 bytes)

3. [TowerTalk] Light Poles Swaying in the Quake (score: 1)
Author: "James R. Duffey" <JamesDuffey@comcast.net>
Date: Sat, 29 Jan 2005 14:52:08 -0700
I think it was a TV cameraman on one of the light poles. - Duffey -- James R. Duffey KK6MC/5 Cedar Crest NM 87008 DM65 _______________________________________________ See: http://www.mscomputer.com f
/archives//html/Towertalk/2005-01/msg01283.html (6,930 bytes)

4. [TowerTalk] Radials - What is the big deal? (score: 1)
Author: James Duffey <JamesDuffey@comcast.net>
Date: Sun, 1 Apr 2007 08:14:20 -0600
Rob - I share your concern with QST's cavalier attitude toward radials. The real problem with statements such as those in the February QST: "For verticlal radiators (including slopers), lay out radia
/archives//html/Towertalk/2007-04/msg00003.html (8,354 bytes)

5. Re: [TowerTalk] Radials - What is the big deal? (score: 1)
Author: James Duffey <JamesDuffey@comcast.net>
Date: Sun, 1 Apr 2007 16:10:22 -0600
upgraded from tech. He has been trying to work stations >using a slinky antenna in his attack but didn't have any luck at all. I gave him a Hustler 4BTV vertical. He put it up in >his back yard on a
/archives//html/Towertalk/2007-04/msg00018.html (8,725 bytes)

6. [TowerTalk] Multiband antenna with non-resonant trap (score: 1)
Author: James Duffey <jamesduffey@comcast.net>
Date: Sun, 26 May 2013 14:37:31 -0500
Hans - Try: "Designing Trap Antennas: A New Approach" by Yardley Beers W0JF Ham Radio August 1987" He also had a couple of articles in QEX. A search on the ARRL periodical index should lead you to th
/archives//html/Towertalk/2013-05/msg00333.html (9,065 bytes)

7. Re: [TowerTalk] Multiband antenna with non-resonant trap (score: 1)
Author: James Duffey <jamesduffey@comcast.net>
Date: Mon, 27 May 2013 07:58:44 -0500
That should be trap resonant frequency = SQRT(flow*fhigh), not trap = sort(floe*fhigh). I didn't check the autocorrect. Sorry - Duffey KK6MC -- KK6MC James Duffey Cedar Crest NM _____________________
/archives//html/Towertalk/2013-05/msg00334.html (9,441 bytes)

8. [TowerTalk] NEC for Mac (score: 1)
Author: James Duffey <jamesduffey@comcast.net>
Date: Sat, 27 Dec 2014 13:38:02 -0700
Jim - I use CocoaNEC from W7AY: < http://www.w7ay.net/site/Applications/cocoaNEC/ > It works very well with a pretty good user interface. I have used it a lot to model a variety of antennas. It is un
/archives//html/Towertalk/2014-12/msg00395.html (8,322 bytes)

9. [TowerTalk] RF Ground is not a Myth (score: 1)
Author: James Duffey <jamesduffey@comcast.net>
Date: Mon, 19 Jan 2015 19:29:35 -0700
Even though a perfect ground, RF or otherwise, does not exist in practice, the RF ground is not a myth. At least not a myth in the same sense that Thor, Zeus, just taxes, and Chupacabra are a myth. T
/archives//html/Towertalk/2015-01/msg00388.html (7,947 bytes)

10. Re: [TowerTalk] TowerTalk Digest, Vol 171, Issue 84 (score: 1)
Author: James Duffey <jamesduffey@comcast.net>
Date: Tue, 28 Mar 2017 11:15:27 -0600
10 feet long, 20pf. - Duffey KK6MC _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contest
/archives//html/Towertalk/2017-03/msg00419.html (7,467 bytes)


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