Search String: Display: Description: Sort:

Results:

References: [ +from:ad4hk2004@yahoo.com: 83 ]

Total 83 documents matching your query.

41. Topband: 1/8 wave vertical (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 28 Dec 2007 05:53:43 -0800 (PST)
1dB can be significant at times, but: An extra dB of transmit on 160 at my station will be somewheres North of five grand... For improved receive I just destroyed a number of weekends since September
/archives//html/Topband/2007-12/msg00209.html (7,861 bytes)

42. Topband: Why not add power class to SP TBDC exchange? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 31 Dec 2007 05:34:09 -0800 (PST)
Sure, and while we are at it, add RST, my call, brand of radio, the year they were licensed, and the name of the family dog... OK, tongue-in-cheek aside the SP is perfect as is - NO CHANGES! The only
/archives//html/Topband/2007-12/msg00240.html (7,301 bytes)

43. Topband: Daylight QSO's during the SP (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 2 Jan 2008 05:13:44 -0800 (PST)
A few days before the SP I worked Japan from Michigan a full hour after sunrise on my end... Propagation is... cheers ... denny / k8do -- Never miss a thing. Make Yahoo your homepage. _______________
/archives//html/Topband/2008-01/msg00016.html (6,485 bytes)

44. Topband: radial depth (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Wed, 30 Jan 2008 05:08:25 -0800 (PST)
Well, the deep radials may work well, or not, depending on your soil... The 3dB attenuation of soil on 160 meters can be as deep as 20-30 feet... The first thought that comes to mind is a bit of a te
/archives//html/Topband/2008-01/msg00202.html (7,030 bytes)

45. Topband: Inverted "L" vs." T" (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 9 Oct 2008 11:44:15 -0700 (PDT)
The effect of trees on 160 signals is going to be minor in either case... The conductive salts and sugars in the sap are mostly confined to a thin skin around the trunk and more heavily in the leaves
/archives//html/Topband/2008-10/msg00062.html (7,892 bytes)

46. Topband: Fanning of a single tip of 1 radial (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 9 Oct 2008 12:10:01 -0700 (PDT)
Mike, under those conditions I would put a copper strip through the tube - as wide as possible -  then fan out  from there...  Get as much metal at the base of the vertical as possible and optimize t
/archives//html/Topband/2008-10/msg00063.html (7,248 bytes)

47. Topband: [Topband] Inverted "L" vs." T" (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 13 Oct 2008 10:45:17 -0700 (PDT)
Well, you can get into a real furball when confronting religious beliefs, i.e. ground radials versus elevated radials... I direct you to N6LF and his actual findings on elevated radials which are the
/archives//html/Topband/2008-10/msg00095.html (7,786 bytes)

48. Topband: UPDATE >> 160 m propagation polar path (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 30 Oct 2008 04:45:29 -0700 (PDT)
Given that most of us have jobs, family, etc. being on the band on a particular date and time is unlikely... Given that your model exhibits a 2 week delta-T - well what can I say... How about just ge
/archives//html/Topband/2008-10/msg00163.html (6,867 bytes)

49. Topband: Unusual Propagation (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Sat, 1 Nov 2008 16:50:42 -0700 (PDT)
Working on antennas today I had the receiver on the Beverages... In the shack testing the switching I thought I heard a call and turned the audio up...Between 2030Z and 2034Z I heard clearly 3 DX sta
/archives//html/Topband/2008-11/msg00003.html (7,129 bytes)

50. Topband: another inverted L problem (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 4 Nov 2008 06:37:48 -0800 (PST)
It acts like a broken coax, probably a bad PL-259.... denny / k8do _______________________________________________ Topband mailing list Topband@contesting.com http://lists.contesting.com/mailman/list
/archives//html/Topband/2008-11/msg00032.html (6,925 bytes)

51. Topband: Inverted L (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 4 Nov 2008 07:17:53 -0800 (PST)
The work I have not seen done (hint, hint, N6LF) is to quantify the effect of starting with the limited count, very short radial field ( 8, 12, or 16 radials) then as you add to the radial count make
/archives//html/Topband/2008-11/msg00033.html (7,729 bytes)

52. Topband: reversible Beverage v none reversible Beverage (answers) (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 11 Nov 2008 06:01:03 -0800 (PST)
Neil,   You will find that there are directions that have less/more noise at a given time of day... That does not mean there is a fault in the antenna...  At my qth in Michigan there are significant
/archives//html/Topband/2008-11/msg00078.html (8,693 bytes)

53. Topband: Inverted L location (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 13 Nov 2008 06:51:58 -0800 (PST)
Just do it...   With your location, whatever direction is the most convenient is the best... denny / k8do _______________________________________________ Topband mailing list Topband@contesting.com h
/archives//html/Topband/2008-11/msg00088.html (6,900 bytes)

54. Topband: reversible Beverage v none reversible Beverage (answers) (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 17 Nov 2008 07:43:50 -0800 (PST)
The first question that comes to mind is whether the difference in signal strength is due to a fault on the Beverage, or a due to a difference in the signals from the two directions... The comment th
/archives//html/Topband/2008-11/msg00103.html (9,295 bytes)

55. Topband: Vertical training days (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 1 Dec 2008 05:02:38 -0800 (PST)
Given your installation so far, in your place I would put my efforts into getting down more radials...  If possible mix in 8 - 16 longer radials - like 3/8w - along with the quarter waves... Try to g
/archives//html/Topband/2008-12/msg00003.html (8,025 bytes)

56. Topband: 160m L impedance?? (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Tue, 9 Dec 2008 05:39:40 -0800 (PST)
Let me second Cliff's sage advice and gild it  a bit......   Get 3/4" or 1" dia L type copper pipe (Home Depot, others) and make three 5 foot ground rods... Drive these into the ground in a triangle
/archives//html/Topband/2008-12/msg00112.html (7,464 bytes)

57. Topband: Good tuner for 160M (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 15 Dec 2008 05:16:18 -0800 (PST)
Wind your own coil... Quarter inch diameter copper tube (50 foot coil of refrigeration tubing) from the Home Depot, Lowes, etc. and a 6 to 8 inch coil form ( cardboard tube for casting cement footing
/archives//html/Topband/2008-12/msg00166.html (7,491 bytes)

58. Topband: Matching Transformer (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Mon, 29 Dec 2008 05:27:37 -0800 (PST)
Many hams have very limited space for a radial field... If they can only get 8 or 12 radials on the ground, then they need to read Rudy Severn, N6LF carefully, until they understand what his research
/archives//html/Topband/2008-12/msg00267.html (7,641 bytes)

59. Topband: Marconi vs. inverted L (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Thu, 3 Sep 2009 13:03:26 -0700 (PDT)
Go for the Marconi for contesting... The instances where a high angle will work something you cannot work on the Marconi are few to none...  Another advantage is less man made QRN on the Marconi... 
/archives//html/Topband/2009-09/msg00006.html (7,054 bytes)

60. Re: Topband: Marconi vs. inverted L (score: 1)
Author: Dennis OConnor <ad4hk2004@yahoo.com>
Date: Fri, 4 Sep 2009 05:26:40 -0700 (PDT)
I got some pm's to my post on the group... ** I thought the inverted L had a low angle take-off for DX work? It's what I have used to work 130 countries in 3 years. ANSWER The OP specifically wants t
/archives//html/Topband/2009-09/msg00012.html (8,841 bytes)

Current List: 41 - 60
Page: [1] [2] [3] [4] [5]
This search system is powered by Namazu