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1. [TowerTalk] 160-m Inverted L or Sloper? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 15 Nov 2005 07:50:22 -0800 (PST)
I have more space than most for antennas.. I am tinkering with 80 meter vertical arrays right now... My reference antenna, a quarter wave vertical, is 600+ feet out front of the nearest array, and Ez
/archives//html/Towertalk/2005-11/msg00499.html (8,277 bytes)

2. [TowerTalk] Sorry (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 15 Nov 2005 14:03:55 -0800 (PST)
My apologies for the wierd formatting and multiple messages... I am obviously having email issues..] denny -- Yahoo! FareChase - Search multiple travel sites in one click. ___________________________
/archives//html/Towertalk/2005-11/msg00507.html (7,087 bytes)

3. [TowerTalk] station grounding question (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 23 Nov 2005 09:12:43 -0800 (PST)
Eric, Excellent dissertation, my compliments... Just one picky point (very, very picky but I can't help myself)... The flash we see from a lightning bolt is not a direct result of the RF created by t
/archives//html/Towertalk/2005-11/msg00652.html (7,740 bytes)

4. [TowerTalk] station grounding question (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 23 Nov 2005 09:20:37 -0800 (PST)
Thus, improving the ground system doesn't reduce ground losses but actually heats up the ground more (????????) but at the same time allows the vertical member to radiate more. What is wrong with thi
/archives//html/Towertalk/2005-11/msg00653.html (7,920 bytes)

5. [TowerTalk] Antenna stuff (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 28 Nov 2005 06:19:22 -0800 (PST)
This is a copy of my post to the 3830 reflector.... FT1000 MK-V transceiver - TRLOG - and an old 256K Pentium with Windows 98... One really old op with bad hearing, lousy CW skills, and Alwhatshisnam
/archives//html/Towertalk/2005-11/msg00758.html (9,065 bytes)

6. [TowerTalk] RFI in keyboard (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 29 Nov 2005 06:00:05 -0800 (PST)
It feels strange to make this request because I'm usually the guy who thinks he has all the answers, but this one is not responding to the usual nostrums... In CQWW I'm suddenly having 80 meter RFI i
/archives//html/Towertalk/2005-11/msg00785.html (7,326 bytes)

7. [TowerTalk] Suggestions for limited space 80M and then 40-10Mantennas for a small lot (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 1 Dec 2005 04:50:58 -0800 (PST)
You are going to get a ton of suggestions... Let me give you mine off the top of my warped little brain.. Couple of options here... Shunt feed the Rohn 45 tower on 80 meters... Get out as many radial
/archives//html/Towertalk/2005-12/msg00004.html (8,462 bytes)

8. [TowerTalk] 40 Meter Dipole Question (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 9 Dec 2005 04:25:03 -0800 (PST)
Feedline is bad - open, shorted, something... denny -- Yahoo! Shopping Find Great Deals on Holiday Gifts at Yahoo! Shopping _______________________________________________ See: http://www.mscomputer.
/archives//html/Towertalk/2005-12/msg00169.html (6,741 bytes)

9. [TowerTalk] bip/bop, imho, etc (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 28 Dec 2005 04:40:03 -0800 (PST)
The point that keeps rattling around in my head when I read these discussions is the assumption of the bip-bop folks that inserting a half wave of coax to one feedline creates a 180 phase shift betwe
/archives//html/Towertalk/2005-12/msg00560.html (7,684 bytes)

10. [TowerTalk] DRIVEN VERSUS PARASITIC (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 3 Jan 2006 10:38:17 -0800 (PST)
Hmmm, the supposition that driving the array will make up for an inadequate ground system does not stand up to critical thought... Any 1/4 wave vertical array requires that the ground mirror the othe
/archives//html/Towertalk/2006-01/msg00045.html (8,200 bytes)

11. [TowerTalk] DRIVEN VERSUS PARASITIC 160 antenna (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 4 Jan 2006 05:06:09 -0800 (PST)
Well, remotely adjustable elements would allow the optimizing of gain and f/b across the band for a parasitic array.... It is certainly doable even on 160, but is it necessary? On 160 I rarely go abo
/archives//html/Towertalk/2006-01/msg00083.html (7,721 bytes)

12. [TowerTalk] Screw Anchor Question (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 16 Jan 2006 05:19:37 -0800 (PST)
I have two towers, 130' lightly loaded and 150' with LARGE antenna loads - way, way beyond Rohns data for 25G... They are installed with screw anchors into sandy ground... They have been up more than
/archives//html/Towertalk/2006-01/msg00317.html (7,930 bytes)

13. [TowerTalk] BEWARE -- the dreaded topic lurks here (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 10 Feb 2006 04:31:52 -0800 (PST)
You are tickling the dragon's tail by even alluding to the LM ! OP word... denny -- Yahoo! Mail Use Photomail to share photos without annoying attachments. ___________________________________________
/archives//html/Towertalk/2006-02/msg00122.html (6,628 bytes)

14. [TowerTalk] Ham Radio Tower & Lightening (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 2 Aug 2006 04:26:00 -0700 (PDT)
Sailboat masts attract lightning for various reasons, among them is that the mast is not properly bonded to the earth and so builds a static charge that makes it a target... A bit of web searching wi
/archives//html/Towertalk/2006-08/msg00029.html (7,082 bytes)

15. [TowerTalk] Turnbuckles (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 9 Oct 2006 05:30:58 -0700 (PDT)
I wandered up the North tower Friday to drop some 80 meter antennas to be replaced with new designs... From about the 70 foot point and up the tower felt a bit more springy than usual... I made a men
/archives//html/Towertalk/2006-10/msg00248.html (8,218 bytes)

16. [TowerTalk] Matching a Delta Loop (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 19 Oct 2006 05:59:11 -0700 (PDT)
Or we can assume that 79/50 = SWR 1.58, which adds an additional 0.13 dB of loss... Hardly worth cutting coax for... Now, given that the impedence measurement was made at the generator end of the coa
/archives//html/Towertalk/2006-10/msg00520.html (7,933 bytes)

17. [TowerTalk] 75 meter loop (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 19 Oct 2006 06:05:47 -0700 (PDT)
You are already there... Your Vee at 95' is going to out run any other configuration at any lower elevation... The only improvement you could make was already suggested, raise the Vee.. denny ... k8d
/archives//html/Towertalk/2006-10/msg00521.html (6,755 bytes)

18. [TowerTalk] re Soldering PL259s (Rob Atkinson, K5UJ) (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 7 Nov 2006 05:13:37 -0800 (PST)
Let me second the opinion on crimp connectors... I have the tool from RF Connectors, via DX Engineeering, and it is a great solution... Also, let me comment that I have been soldering PL-259 for neig
/archives//html/Towertalk/2006-11/msg00131.html (7,508 bytes)

19. [TowerTalk] TIC 1122 Fixed (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 7 Nov 2006 05:22:55 -0800 (PST)
I have given up on TIC rotors... The last one remaining up on my towers has <once again> had a disparity between pot position and rotor position and ripped the matching harness off the beam while a g
/archives//html/Towertalk/2006-11/msg00132.html (7,113 bytes)

20. [TowerTalk] 40 meter beams (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 30 Nov 2006 04:49:22 -0800 (PST)
What is your price range? If you care enough to run the very best then CAL AV 2D-40A is the only answer... If the budget is a bit thin then a shorty forty like the HyGain DIS-72 will fill the bill...
/archives//html/Towertalk/2006-11/msg00888.html (7,041 bytes)

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