Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Sun, 25 Nov 2007 17:52:18 -0500
J-38s are on ebay all the time, typically for about US$30 + S&H in good condition. Most are the version with the open base for the key itself. Some are the Lionel (as in model trains) with a closed b
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Fri, 30 Nov 2007 14:14:44 -0500
I hadn't heard the "FB from Samuel F. B. Morse" theory, but maybe... FYI, Samuel F. B. Morse III, W6FZZ, SFBM's grandson (not great- or great-great-grandson) was a FB Morse code champion at both the
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Mon, 3 Dec 2007 08:57:41 -0500
Cheers, 73 Ron McC. w2iol William Shanks calculated pi to 707 places by hand in 1873-74, but made an error from the 527th place forward. D. F. Ferguson found the error in 1945 (using a mechanical cal
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Tue, 1 Jan 2008 17:29:10 -0500
Mention of an online attenuator pad calculator reminded me of Martindale's Online Calculators <http://www.martindalecenter.com/Calculators.html> 19,000 calculators for lots of kinds of problems. I do
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Thu, 24 Jan 2008 22:37:22 -0500
S. F. B. Morse III, W6FZZ on CW speed Well, "safe" turned out to be in my folder of stuff about the APL-JHU's mobile automata (a.k.a. robots) on which I worked in the early 1960s. Why there? I have s
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Sat, 26 Jan 2008 19:49:07 -0500
I should have asked, "Does anyone else NOT want a copy?" :) I left town Friday afternoon for a Doc Watson concert in Harrisburg, PA (GREAT!) and just got back home and in email contact a little bit a
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Sun, 27 Jan 2008 20:29:07 -0500
S. F. B. Morse III, W6FZZ on CW speed Can someone to put the letter up on a web site, somewhere, anywhere... before I send out another exponentially growing mass mailing? Please. :) AdvTHANKSance! My
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Mon, 28 Jan 2008 15:08:50 -0500
Yea! There is now at least one web site with the SFBM III W6FZZ letter so far and at least a couple more soon. John DeGood, NU3E <http://degood.org/hamradio/samuel_fb_morse_iii/> THANKS, John! .and.
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Wed, 30 Jan 2008 09:51:55 -0500
John DeGood, NU3E, has one of the sites now with the S. F. B. Morse III W6FZZ code speed letter <http://degood.org/hamradio/samuel_fb_morse_iii/>. John actually did the research on SFBM III that I ha
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Sun, 6 Apr 2008 12:50:21 -0400
Let's see: 4 x 400V = 1600V Uhhhhh... What happened to engineering design margins? Cheers, 73, Ron McC. w2iol@arrl.net In an emergency, a ground connection can be made by forcing one or more bayonets
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Fri, 9 May 2008 12:46:10 -0400
Coax braid has a shielding rating, such as 95%, meaning that 95% of the inside shield current should stay inside and maybe 5% might escape to the outside. Likewise, currents on the outside coming fro
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Fri, 9 May 2008 16:43:07 -0400
Good. I figured someone would speak up. :) As Stuart notes, the open spaces in a 95% coverage coax criss-cross braid are much smaller than a wavelength at HF and probably do not translate to anything
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Mon, 16 Jun 2008 12:58:43 -0400
By the way, I forwarded Mike's note to the rest of the ARRL EMC (was RFI) committee so Ed Hare, K1RFI, can add Mike's technique to the ARRL list of things to try. :) Cheers, 73, Ron McC. w2iol@arrl.n
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Wed, 18 Jun 2008 21:02:05 -0400
Single-pair telephone drop wire with solid PVC insulation has C = 0.116 uf/mi dry, C = 0.190 uf/mi wet. So, rain would/will affect things. Cheers, 73, Ron McC. W2IOL w2iol@arrl.net Ronald C. McConnel
Author: "Ronald C. McConnell" <rcmcc@embarqmail.com>
Date: Mon, 15 Sep 2008 08:56:09 -0400
The workshop where Samuel F. B. Morse and Alfred Vail developed the first practical telegraph has reopened after major refurbishment. <http://www.dailyrecord.com/apps/pbcs.dll/article?AID=20088091403