[600MRG] Off topic...sort of...

[Kenneth G. Gordon]

On 6 May 2018 at 20:29, Mel Farrer wrote:

> 
> OK everything now start to make sense.  Ant not for 600 meters..... hi. 

Well....yes and no....I had planned to short the feed-line together at the shack-end and feed 
it as some sort of end-fed. I'd install a 630 meter tuned circuit at the base and use some sort 
of link coupling to it. It will be a crappy antenna for 630, but at least it WILL be usable there. 
It is all I can do at this point. Unfortunately. :-(

> OK then the unbalance 
> needs the two identical RF amp meters.  Since you did not say how long the ladder line was,

It is about 30 feet long, not quite. It extends from the peak of the roof on our home, down 
into my basement shack.

I plan to use this antenna on 160 through 10 meters. Maybe even 6 meters. I have 
MMANA-GAL plots of the its radiation patterns for 1.8 through 30 MHz by band, WARC and 
60 meter included. Those are certainly "interesting". I really wish it was possible to make the 
entire antenna horizontal instead of vertical, but so far, other than the feed-line radiation, it 
is doing what I hoped. Funny thing is that QSB is very noticably less on this antenna than 
on my 55' vertical, and it is quieter too.

> it 
> will be best to put them at any high current loacation for 30 meters.  That will give you the best 
> resolution....  My guess is you will need to use a switchable/tunable series coil on one leg to 
> achieve balance.

That was my "guess-ti-mate" also. If I was using my big home-brew balanced coupler, all I 
would have to do is to adjust the placement of the taps to each feed-line wire asymetrically. 

At this point, I am using the Heathkit simply because 1) it is far smaller and 2) it is handy. It 
has been quite obvious that the balun heats badly on 80 meters when I run power greater 
than 300 watts to it: SWR drifts rapidly up from 1:1. All other bands don't show that.

>  My guess is the lower leg will be lower in frequency so need to put L  in the 
> top one to balance.

OK. Thanks.

BTW, the main reason(s) I posted this here is because there is so much "static" on the 
ham-antennas list, and I figured the guys here have used OWL in the past. I really wish 
there was some way to get Ron to admit that when jX is zero, all that is left is R, but I've 
given up on that. :-)

Hmmm....now that I think about it, I may post the same question there anyway....just to see 
what pops up. ;-)

Ken W7EKB

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