[600MRG] modeling tutorial

[Greg]

Lake "Ed" Trump was also a steam locomotive fireman and landline (Morse)
telegraph operator!

I've got some of his writings on my web pages:

http://telegraphlore.net/telegraph_tales/drgw_web/drgw_stories.htm

Ed is still active on landline Morse.  Huh?:

http://kob.sdf.org/morsekob/

Oh, and yes, he does have some homebrew regen receivers.

73 Greg KF5N


On Mon, 2015-09-07 at 17:26 -0700, 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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