[600MRG] modeling tutorial

[Edward R Cole]

Check out:
https://www.qrz.com/db/AL7N

Note he is the Section Traffic Mgr for AK (CW net).  He and I both 
got our first licenses in 1958 and retired in 2009 (not sure of his 
age).  I know of him but not personally acquainted.

73, Ed - KL7UW

At 04:26 PM 9/7/2015, Kenneth G. Gordon wrote:
>On 7 Sep 2015 at 18:45, D.J.J. Ring, Jr. wrote:
>
> > AL7N is a fellow with lots of 600m experience, he was one of the last WT
> > operators at Alascom's WKR Nome Radio installation in the 1980s.
> >
> > http://radiomarine.org/gallery/show?keyword=WKRIRT&panel=pab1_7
> >
> > Nome Radio/WKR was once part of the US military "Washington-Alaska Military
> > Cable and Telegraph System" (Affectionately referred to as "WAMCATS".
>
>Gee...I had no idea. Ed and I have been friends for some time now. I cannot
>remember when he and I first got together. He has sent me photos of his
>home-brew equipment. He builds a lot of it, except, perhaps, his receivers.
>
> > How long ago did his antenna system get upgraded?  He has had a 
> very good to
> > excellent signal on 14050.0 kHz for quite a long time.
>
>Within the last year. Possibly a year ago. I can't remember at this 
>point. After
>all I'm 73 now. :-)
>
> > What is he running?
>
>On 20, I think he is using some sort of fairly modern rig which will output
>about 50 watts. Ten-Tec, I think. I can go back through my e-mails from him
>to take a look if you wish. He has told me that he really cannot afford any
>really modern gear, and he doesn't like the way they operate anyway.
>
> >  If he isn't using a beam pointed this way,
>
>No. He isn't, unless he changed to that very recently. He has neither the
>room nor the support for such.
>
> > I'm really
> > impressed as I've called him without a schedule on that frequency 
> he listens
> > there and 3550, 7050 and 14050 like a coast station!
>
>Yes. He monitors those frequencies 24/7/365. He has speakers in every
>room in his home which he feels should have one. I've even gotten him out
>of bed once. :-)
>
> >  He came up and had a 589
> > signal sometimes, mostly 56 to 579 which is a great signal into 
> Massachusetts
> > from Fairbanks where he now resides.
>
>Yup. :-)
>
>What he was using for an antenna before we got together was a sort of low
>Vee-Beam of his own design, fed with open-wire line. He was using some
>sort of resistors at the low ends to connect them to ground.
>
>According to the (first) EZNEC models which were run for us by Mel Ferrer
>K6KBE, then (second) my own MMANA-GAL models, his antenna, at the
>frequencies he was using it, was losing most of its radiation into 
>the ground.
>It really was a "worm-warmer". Even without the resistive terminations it was
>very inefficient.
>
>After doing some more modeling, we advised him to build an open-wire-line
>fed inverted-Vee. On his small property, the legs were pretty short, about 33
>feet long each. We advised him to put it up as high as he could get 
>it. I can't
>remember the height, but it really isn't very high.
>
>His coupler, which he built, is excellent, and he can match the 
>antenna to his
>rig on 80 through 10 meters, although it seems to work best on 20.
>
>There are at least two folks in Washington and Oregon who routinely pass
>traffic from RN7 to him: W7GB, and W7IZ. Sometimes, K7BFL does also. He
>is RN7's Alaska liason station. GB and IZ have commented favorably on the
>results of his "new" antenna. It has made their job much easier.
>
>He has also built a small rig using an 829B for 30 meters. I sent him some of
>the parts for it: the tube (NIB), a socket and  (I think) a power transformer.
>
>He is one sharp cookie, and a very fine operator. His fist is just 
>beautiful, and
>he can hear signals that are so weak that very few other ops could hear
>them, let alone take traffic like he does.
>
>I only wish he lived on a piece of property with a bit more room and out of
>town. I also wish he had some better equipment. It would really be nice to
>have him on 600 meters.
>
>He has always impressed me, and until you gave me the info above, I had
>no idea at all of his past history.
>
>Thanks, DJ.
>
>Ken W7EKB
>
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73, Ed - KL7UW
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