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Total 83 documents matching your query.

1. Topband: FW: ERROR IN ARRL 160M CONTEST RULES ? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 6 Dec 2005 05:39:06 -0800 (PST)
John, Unable to get into the ARRL 160 contest, but I'll be there with bells on for CQ 160... The good thing about requiring an E-log in Cabrillo format is that it doesn't matter what NP4A thought, hi
/archives//html/Topband/2005-12/msg00036.html (7,245 bytes)

2. Topband: strange echos (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 12 Dec 2005 05:18:58 -0800 (PST)
Ducting around the world will take roughly 130 milliseconds (0.130 sec.) A long time delay to be a direct echo, dit + echo, at 18 wpm... Now, a string of dits could duct around the world and come bac
/archives//html/Topband/2005-12/msg00173.html (7,501 bytes)

3. Topband: Beverage on Ice (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Sat, 17 Dec 2005 05:13:53 -0800 (PST)
My initial thought is that the "B"everage (OK Tree) is too high above actual earth and lacks adequate earth reference to stabilize the impedence and properly tip the incoming wave front...... Remembe
/archives//html/Topband/2005-12/msg00213.html (8,408 bytes)

4. Topband: Write Log and the Stew (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 19 Dec 2005 04:37:23 -0800 (PST)
TRLOG seems to do a fine job of calculating the contact points for the two grid squares <doh>, but final score will be from the sponsors when they have both logs in hand to calculate the power multip
/archives//html/Topband/2005-12/msg00232.html (6,975 bytes)

5. Topband: Stew Perry Contest (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 19 Dec 2005 05:08:07 -0800 (PST)
Well, I got on for a few hours... Still having intermittent RFI in the computer in spite of every line being heavily choked and switching to a Logitech IR keyboard... So, to those who worked me and a
/archives//html/Topband/2005-12/msg00234.html (8,010 bytes)

6. Topband: Inverted L (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 19 Dec 2005 14:45:41 -0800 (PST)
1. Yes, in general... However the 3/8 moves the current lobe up the wire... So, lessened ground heating may offset the change in the main angle of radiation... Try it at a quarter wave until you have
/archives//html/Topband/2005-12/msg00243.html (8,600 bytes)

7. Topband: shunt fed tower - question? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 5 Jan 2006 04:54:19 -0800 (PST)
Herb, my suspicion is that two drop wires will act more like a folded dipole than acting like a full skirt... I expect it will take a minimum of three wires at 120 degree spacing to begin to act lik
/archives//html/Topband/2006-01/msg00065.html (8,584 bytes)

8. Topband: A little different vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 10 Jan 2006 12:47:57 -0800 (PST)
If you drill the tubes for cross bolts, how do you then erect it? denny - inquiring mind, and all that... -- Yahoo! Photos ? Showcase holiday pictures in hardcover Photo Books. You design it and we?l
/archives//html/Topband/2006-01/msg00131.html (6,876 bytes)

9. Topband: Conditions Today in Michigan (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 17 Jan 2006 04:51:08 -0800 (PST)
Up at 0930Z thismorning... Went out to the shack, slipping and sliding on glare ice, expecting to work a few JA, etc... Band was not open to Asia that I could hear... AA1K, VE3DO, and few other regul
/archives//html/Topband/2006-01/msg00245.html (7,134 bytes)

10. Topband: Radials Again (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 3 Oct 2006 04:38:56 -0700 (PDT)
RE elevated radials needing to be a significant fraction of lambda above ground: Suggest you read Les Moxon's book "HF Antennas for all locations" for a discussion of this... I tend to avoid the batt
/archives//html/Topband/2006-10/msg00022.html (7,367 bytes)

11. Topband: Vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 10 Oct 2006 05:04:28 -0700 (PDT)
I agree with doing something for receive before major additions to transmit... Look at a short, untuned dipole along the periphery of the yard, about head high - doesn't have to be a straight line...
/archives//html/Topband/2006-10/msg00069.html (7,237 bytes)

12. Topband: Forms for traps/coils (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 20 Oct 2006 05:21:59 -0700 (PDT)
For 160 I make my coils 6 inches dia. mainly... I usually aim for my coils to come out roughly square, i.e. 6" dia. X 6" long... My rationale here is that this gives the best Q with least dissipation
/archives//html/Topband/2006-10/msg00136.html (8,573 bytes)

13. Topband: Help - Mysterious Noise on 160 meters (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 7 Nov 2006 07:10:32 -0800 (PST)
My immediate thought is that the noise is local... Possibly in your house/shack... Start by putting the rig on a battery and shutting off the main breaker to the house... Also, turn off any pager or
/archives//html/Topband/2006-11/msg00044.html (7,329 bytes)

14. Topband: Fire tower as support for 1/4-wave sloper (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 22 Nov 2006 04:47:39 -0800 (PST)
Forget the sloppy sloper... You have a nice support... What I suggest for a temporary antenna is a bent dipole, fed with coax... Use a 2x4 clamped to the tower to hold the upper end of the antenna 5
/archives//html/Topband/2006-11/msg00141.html (7,535 bytes)

15. Topband: Radials on a fence (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 22 Nov 2006 05:02:46 -0800 (PST)
Pete, just put out whatever radials you can in whatever directions you can, and don't agonize over it... It will radiate and receive... If you want to eek a bit more performance, then add a groundscr
/archives//html/Topband/2006-11/msg00142.html (7,847 bytes)

16. Topband: Yet Another Radial Question (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 1 Dec 2006 05:16:26 -0800 (PST)
Bob, you will get tons of opinions.. From my experiments in investigating 160 radials, do not mix elevated and grounded radials... If one radial is up, keep em all up - or all down as the case may be
/archives//html/Topband/2006-12/msg00003.html (7,993 bytes)

17. Topband: Feeding vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 11 Dec 2006 08:43:41 -0800 (PST)
Forget the hardline - unless it is really handy and you have the right fittings , etc... I am assuming an insulated base tower... Run some RG-8 out to the tower... Cobble up an L-match and see if it
/archives//html/Topband/2006-12/msg00127.html (7,430 bytes)

18. Topband: EU opening (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 18 Dec 2006 05:01:21 -0800 (PST)
I have not worked any significant DX since the flare... At my sunrise (Michigan) on the 13th I worked JA8ISU on 1815 kc with his signal a solid 2 S units above the noise ... Last night right at my su
/archives//html/Topband/2006-12/msg00175.html (7,110 bytes)

19. Topband: Poor conditions (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 18 Jan 2007 12:17:08 -0800 (PST)
Western parts of Europe having severe winds, up to 100 mph.... Much damage, as you can imagine, so maybe besides poor propagation the guys are not able to get on 160 right now - electric out, broken
/archives//html/Topband/2007-01/msg00309.html (7,050 bytes)

20. Topband: Moon and the Ionosphere : YO3FFF (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 15 Mar 2007 04:10:01 -0700 (PDT)
http://www.orchidcitysoftware.com/mooness.html In CQ magazine of a few years back you will find George's column on propagation discussing this... In an email to George I suggested the name MRIR Effec
/archives//html/Topband/2007-03/msg00049.html (6,740 bytes)

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