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As Doc allured to, the antenna designs are not the same. A series coil in the base is not the same design, IMO.

I suspect that Doc is correct, that the second antenna is probably a base loaded, shortened antenna of another wavelength, probably a base load 3/4 wave antenna. Also note that the loading coil is wound tight as to fit inside the PVC rather than outside as on the first.

More believable to me is that the first antenna has a very lossy impedance match or some other problem...

The test setup is too basic to present any problems and I also tried the antenna up on the roof the same place where I had my dipole - and various repeaters showed a significant reduction in signal strength (3 bars vs 5) and some repeaters that were full quieting were then full of noise.

At any rate, I'll repeat the experiment after rebuilding a new 5/8 wave antenna.

<blockquote data-quote="C2" data-source="post: 152201" data-attributes="member: 568">As Doc allured to, the antenna designs are not the same. A series coil in the base is not the same design, IMO.I suspect that Doc is correct, that the second antenna is probably a base loaded, shortened antenna of another wavelength, probably a base load 3/4 wave antenna. Also note that the loading coil is wound tight as to fit inside the PVC rather than outside as on the first.More believable to me is that the first antenna has a very lossy impedance match or some other problem...The test setup is too basic to present any problems and I also tried the antenna up on the roof the same place where I had my dipole - and various repeaters showed a significant reduction in signal strength (3 bars vs 5) and some repeaters that were full quieting were then full of noise.At any rate, I&#039;ll repeat the experiment after rebuilding a new 5/8 wave antenna.</blockquote>

[QUOTE="C2, post: 152201, member: 568"] As Doc allured to, the antenna designs are not the same. A series coil in the base is not the same design, IMO. I suspect that Doc is correct, that the second antenna is probably a base loaded, shortened antenna of another wavelength, probably a base load 3/4 wave antenna. Also note that the loading coil is wound tight as to fit inside the PVC rather than outside as on the first. More believable to me is that the first antenna has a very lossy impedance match or some other problem... The test setup is too basic to present any problems and I also tried the antenna up on the roof the same place where I had my dipole - and various repeaters showed a significant reduction in signal strength (3 bars vs 5) and some repeaters that were full quieting were then full of noise. At any rate, I'll repeat the experiment after rebuilding a new 5/8 wave antenna. [/QUOTE]

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