[Antennas] RE: tuning antennas

Fri Aug 11 15:40:52 EDT 2006

Hi Mark,
A "good" SWR doesn't mean all is well.
A line with a lot of loss will show a low SWR, (not that this is the case
in your antenna).
A quarter-wave antenna usually has a lower (35-ohm) or so impedence and
also usually requires a very good ground or radials.
You haven't told us much about where or how the antenna is positioned or
mounted, except to say that you are end feeding with 7 feet of coax.
You might have better luck running the wire straight to your tuner.
73
Bill KA8VIT
Frederick wrote:
> Hi Ed and KA8VIT,
>> I appreciate your responses.
> I believe that KA*VIT was wondering why an Extra would ask such a 
> simple question. the reason is that although I used the standard 
> measuring formula and measured carefully the antenna system was still 
> not resonant on the desired frequencies. In order to obtain a proper 
> match I was forced to trim about 5 feet off from my 60 foot wire. Now 
> I have good SWR's which is not right. My signal strength has improved 
> and things are looking good! But, the antenna is the wrong length. It 
> is only about 55 feet. So, the only other explanation I can find is 
> the length of the coax.
>> By the way Ed, you were wondering about my using the name 
> Frederick, in my E-Mail address, I use Frederick as a pen name on the 
> internet. I am glad you enjoy the prayer book link. Feel free to visit 
> it as often as you like!
>> Any ideas on why this antenna is working right would be appreciated.
> God bless,
> Mark WZ0K

-- 
Bill Chaikin, KA8VIT
USS COD Amateur Radio Club - W8COD
WW2 Submarine USS COD SS-224 (NECO)
ka8vit at ka8vit.com
http://ka8vit.com
http://www.usscod.org
QRP-L NBR: 2596
FP#-1043