Mail Archive Search: <+from:wa3mej@comcast.net>

Results:

References: [ +from:wa3mej@comcast.net: 67 ]

Total 67 documents matching your query.

61. Re: Topband: BOG question (score: 1): Author: Jim <wa3mej@comcast.net>; Date: Mon, 5 Oct 2015 17:04:17 +0000 (UTC); Frank et. al, The ground does indeed affect the Vf however different types of wires/cables are affected differently and the only way to know for sure is to measure the Vf yourself. I use old telephon; /archives//html/Topband/2015-10/msg00013.html (9,930 bytes)
62. Re: Topband: VOA (score: 1): Author: Jim <wa3mej@comcast.net>; Date: Mon, 11 Apr 2016 18:20:58 +0000 (UTC); Some years ago I worked for a government EMC laboratory (ECAC) in Annapolis, MD. One of the problems we had to mitigate was over at the old Navy Transmitter site on Greenburry Point. They ran 1.5MW E; /archives//html/Topband/2016-04/msg00077.html (22,728 bytes)
63. Re: Topband: OT: Studying the ionosphere using RBN (score: 1): Author: Jim <wa3mej@comcast.net>; Date: Mon, 30 May 2016 19:46:24 +0000 (UTC); Why waste time and energy with RBN stuff. We have the tool that does 90% of the work for us an no one uses it because it is digital. WHISPER is the perfect tool. If everyone would put their SSB trans; /archives//html/Topband/2016-05/msg00065.html (9,488 bytes)
64. Topband: unfinished Inverted L project (score: 1): Author: Jim <wa3mej@comcast.net>; Date: Fri, 18 Nov 2016 18:31:41 +0000 (UTC); Art, While it is probably less than optimum it will work great with a tuner in the shack as long as the tuner has a good deal of tuning range, this being especially true if you intend to use that ant; /archives//html/Topband/2016-11/msg00127.html (8,661 bytes)
65. Re: Topband: Topband Digest, Vol 169, Issue 22 (score: 1): Author: Jim Jim <wa3mej@comcast.net>; Date: Mon, 30 Jan 2017 15:02:15 -0500 (EST); Bob, As far as the pattern you will only know about that if you model and even possibly measure the field in the far field of the antenna. Might I suggest however you put a halyard up and then you ca; /archives//html/Topband/2017-01/msg00103.html (10,871 bytes)
66. Topband: JT65 on 160 (score: 1): Author: Jim Jim <wa3mej@comcast.net>; Date: Fri, 17 Mar 2017 14:06:30 -0400 (EDT); Jorge, I use only 35-50w on TB. A few years ago I worked VKs and Zls using only 35watts then went down the band a bit and worked one of the same stations on CW only moments later BUT it took over 900; /archives//html/Topband/2017-03/msg00045.html (7,647 bytes)
67. Topband: Digital modes on TB and power required (score: 1): Author: Jim Jim <wa3mej@comcast.net>; Date: Sun, 19 Mar 2017 21:14:12 -0400 (EDT); Guys, First of all in many cases the reason we need really high power on any mode is because other hams on the band are using it and they cover us up... so it is mine is bigger than yours. Now to be; /archives//html/Topband/2017-03/msg00058.html (9,859 bytes)

Current List: 61 - 67
Page: [1] [2] [3] [4]