[TowerTalk] "Antenna Tuner"

[Drax Felton]

You don't want a resonant antenna.  You want one that presents a 50 ohm non reactive load to the feed line if that's what the feed line is.  

Otherwise you use a matching network. 

Right? 

Sent from my iPhone

> On May 3, 2014, at 10:20 AM, "Dan Schaaf" <dan-schaaf at att.net> wrote:
> 
> Seems to me that since an antenna is considered  inductive or capacitive, when it is physically away from a resonant frequency length, then adding inductance or capacitance at the base, middle or top assists in resonating the antenna such that XL=XC. I have not found anywhere that says antenna resonance must be void of any assistance. For example, a 60 ft vertical with base inductance or with top capacitive hat loading is resonant, therefore it is tuned at a certain frequency. So, it then is tuned. The tuner in this case may be base tuning using a remote tuner, or tuned using the appropriate reactance midway or topside.
> 
> You could call it matching, or impedance matching, or impedance transformation or tuning. Seems any of these descriptions can be used. Just depends on how many words that you want to utter.
> 
> Otherwise, what am I missing here?
> 
> Best Regards
> Dan Schaaf
> 
> =================================
> K3ZXL www.k3zxl.com
> =================================
> 
> -----Original Message----- From: Marsh Stewart
> Sent: Saturday, May 03, 2014 8:56 AM
> To: towertalk at contesting.com
> Subject: [TowerTalk] "Antenna Tuner"
> 
> 
> Someone posted the following on the subject of antenna tuners: "They aren't
> adjusting the resonance of the antenna, so what are they tuning?"
> 
> When I adjust the capacitance and inductance of my "antenna tuner" my
> antenna does not change length or height, and the length of the feedline
> does not change. Could it be because it is not really an "antenna tuner" but
> is actually an impedance matching network?
> 
> Marsh, KA5M
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk 
> 
> ---
> This email is free from viruses and malware because avast! Antivirus protection is active.
> http://www.avast.com
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk