[KYHAM] Need Alittle Help

wa4qal at ix.netcom.com wa4qal at ix.netcom.com
Tue Mar 6 17:29:59 CST 2007


Michael Williams wrote:
> Hello,
> 
> I'm getting ready to turn in my CSCE on Saturday to become an /AG 
> General... I have strung a 20M dipole and a 40M dipole.

Congratulations.

> I'm needing someone in this area that would have an Antenna Analyzer 
> that can help me get my dipoles tuned.

Can you be a little more precise than just "this area"?  Does that
refer to: Earth?  Kentucky?  Eastern Kentucky, Western Kentucky,
Central Kentucky, Northern Kentucky, etc.?

> I have the 20M dipole in the area of 2 SWR and the 40M is like a 5 right 
> now but I can't find the resonant frequency.

There used to be a trick us old timers used before antenna analyzers
became available.  The trick was to check the SWR at the upper end of
the band and the lower end of the band.    If the SWR was higher at
the upper end, that meant that the antenna was too long and needed to
be shorted (Resonance below the band.).  If the SWR was lower at the 
upper end, that meant that the antenna was too short and needed to be 
lengthened (Resonance above the band.).  Of course, it was also a good 
idea to check the SWR in the middle of the band, too, since it could be 
resonant within the band.

> Thanks
> 
> KG4LHQ

Dave
WA4QAL




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