[TowerTalk] "Antenna Tuner"
dan-schaaf at att.net
Sat May 3 10:20:28 EDT 2014
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?
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?
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