[AMRadio] LINK COUPLING)

[W5AMI]

Hi Larry,

Well, the wire I had, which is now just a messy bundle, was a half wave
dipole cut for 75/80 meters, fed direct with 450 ohm ladder line from the
tuner.  I have two large ceramic feed thru insulators to bring it into the
house, and the home brew tuner is mounted on the wall right where the
insulators are.

I could tune anything for 160 to 20 meters with pretty good success.  20
and above was very touchy, since the coil and caps are so big (inductance &
capacitance).  I'm sure on 160 it was not very efficient due to the antenna
being cut for 80 meters, but it would tune just fine.  80 and 40 were a
breeze.  If I went to 40, I didn't even have to change taps on the coil,
just tweak C1 a little.

Now that my old antenna is down, thanks to my 200+ lbs great dane, I am
going to put up a 1 & 1/4 wave doublet and feed it the same way.  Been
wanting to try one for a long time, and my dog has now given me reason to
do so.  I have lots of property here on the farm, but also lots of trees in
the way.

73
Brian / w5ami


On Thu, Sep 19, 2013 at 6:27 PM, Larry Szendrei <ne1s at securespeed.us> wrote:

> On 9/18/13 1:13 PM, W5AMI wrote:
>
>> Good point Don, and thanks as always...
>>
>> Here is a photo of my homebrew tuner I built I long time ago.  It is
>> mounted to the wall right where the feed through insulators come in (just
>> below).  I think I sent you a photo of the coil several years ago before I
>> made this thing up.  C2 on the right simply makes it easier to adjust the
>> link coupling.  I actually had to remove several plates from C1 since it
>> was way more than I needed.  The clock is not part of the tuning system...
>> I call this "The Ugly Tuner", but who cares, as it works great.
>>
>> http://w5ami.net/images/tuner.**JPG <http://w5ami.net/images/tuner.JPG>
>>
>>
>>  Brian, if you don't mind, describe the wire you're feeding and all the
> bands for which you've had success using the system.
>
> Thanks!
> -Larry/NE1S
>



-- 
"Who feeds a hungry animal feeds his own soul" - Charles Chaplin