Is this a loading coil?

Hi, I was looking up antennas on google, and found a radio shop's
antenna page. These antennas have some kind of coil welded onto them.
Are these what you would call loading coils? And by the picture I
can't tell if the coil is at the bottom, middle or top of the antenna.
Any guesses?

http://www.mpaudio1.com/cbmobileantennas.html


Jim

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Relevant Pages

  • Re: Dual-Z0 Stubs
    ... I have exactly the same coil that Tom used for his ... Whinnery, and Dr. Corum, not with me. ... J. D. Kraus, "Antennas" ... S. Ramo and J. R. Whinnery, "Fields and Waves in Modern Radio" ...
    (rec.radio.amateur.antenna)
  • Re: Current through coils
    ... the bottom of the coil. ... We have been talking about short loaded antennas. ... Does you standing wave model explain this very repeatable ... If you measure the current taper at a point where the ...
    (rec.radio.amateur.antenna)
  • Re: Capture Area (was antenna theory for idiots?)
    ... It is non intuitive that if I peak the coil this way, and obtain more voltage, it is a different case than if I peak the coil with cable capacitance, or an additional capacitor. ... the formula I gave assumes that the coil is well below self resonance where the shunt capacitance is negligible. ... I have been asked to try putting a rod through the center of a flat spiral coil. ... But if my coils get large enough, they become loop antennas in their own right, and the rod, though it may have a significant length and area, is only a part of what is happening. ...
    (rec.radio.amateur.antenna)
  • Re: Dual-Z0 Stubs
    ... Cecil Moore wrote: ... a 75m Texas Bugcatcher coil along with some technical ... Whinnery, and Dr. Corum, not with me. ... J. D. Kraus, "Antennas" ...
    (rec.radio.amateur.antenna)
  • Re: Dual-Z0 Stubs
    ... a 75m Texas Bugcatcher coil along with some technical ... Whinnery, and Dr. Corum, not with me. ... J. D. Kraus, "Antennas" ... "Resonant Lines in Radio Circuits" ...
    (rec.radio.amateur.antenna)