[HCARC] 10 meter Loop

[Gary and Arlene Johnson]

I will be running 100 watts or less.  Don't see an amplifier in amy future 
for a number of years.  I also just bought an antenna tuner (manual) to use 
at the transmitter.  I have a good friend who has a wholesale electrical 
license and I am wondering if he can order COAX for me.  I also have seen 
several sources for LMR-400 coax on Ebay in 500 ft rolls.  Yes I know there 
are several makers of LMR-400 and to be careful.  I understand Times is 
supposed to be the primo stuff, but there are others out there who make it 
and they advertise equal or better specs.  I wonder if it is just better to 
bite the bullet and use the LMR-400, especially since I also need to make a 
run of coax from my house to my shop/shack (to be) to bring my network out 
to there.  The run is going to be about 180 feet or so.  I figure the coax 
with the lowest  loss would be best for that too.  My runs of coax for the 
radio are going to be in the neighborhood of 100-150 feet too.

Gary J
N5"BAA"
----- Original Message ----- 
From: "Kerry Sandstrom" <kerryk5ks at hughes.net>
To: "Gary and Arlene Johnson" <qltfnish at omniglobal.net>
Cc: <hcarc at mailman.qth.net>
Sent: Monday, August 13, 2012 3:41 PM
Subject: Re: [HCARC] 10 meter Loop


> Gary,
>
> Everything Bill says is true, however, it may not be important.  Yes, if 
> you have a high SWR on coax your losses will go up.  The best place for an 
> antenna tuner is at the antenna feedpoint.  It isn't the most practical 
> place however.  My antenna tuner is at my operating position.  My 
> transmission line is ~100 feet of 1/2 " coax, RG-8/u size.  On 40 meters 
> it has a reasonably low SWR.  On 20, 17, 15, 12, and 10 the SWR is quite 
> high. It works fine for me.  If I was serious about the higher bands, I 
> wouldn't use this vertical, I'd put up a small Yagi.  I've never 
> considered a remote antenna tuner.  I just don't think they are worth the 
> price.
>
> My suggestion to you is to stick with a good manual antenna tuner at your 
> operating position and use 1/2" diameter coax such as RG-8/U to the 
> antenna. It will work great on 80,40 and 30 meters and will be more than 
> adequate through at least 10 m.  It will easily handle a kW on the lower 
> bands and a100 W through 10 m.
>
> Kerry
>