If M2 is using the same measurments they use for their vhf antennas it
is freespace dbd.
Mark'
Jan Erik Holm wrote:
>
> Here we go again with crummy gain figures, guess M2 is no
> better then Force12.
> If it doesn´t say "what kind of gain" it is or how it´s measured
> it sure ain´t worth the cost of the ink.
>
> 73, Jim SM2EKM
>
> PS: I can testify that K1KW sure used to have a fat signal with
> his stacked LP´s.
> ------------------------------------------------------------------
>
> Pete Smith wrote:
>
> >At 10:41 AM 3/18/02 -0500, Chuck O'Neal wrote:
> >
> >>Absolutely not true!!! If you take the aluminum required for
> >>monobanders, 3 or 4 or 5 elements each, for three bands
> >>10, 15, and 20M, and make one log out of it, you get the WARC
> >>bands, all of every amateur band without regard to phone
> >>or CW tuning, better F/B ratio across entire amateur bands,
> >>Better SWR performance , with only a compromise in gain
> >>of 1 to under 2 dB, depending upon the design..
> >>
> >
> >But a 10-30 MHz or a 14-30 MHz log on any given band doesn't even approach
> >the performance of a good 3-element monoband yagi. Check out the M2 gain
> >and F/B claims on the Array Solutions web site -- even their 11-element
> >6-30 MHz LP on a 76-foot boom only claims a peak of about 9.7 dB gain
> >(their chart doesn't specify dBi or dBd), and average gain is closer to 7.5
> >dB. And those are the manufacturer's claims.
> >
> >A fairer standard of comparison would be an antenna like the Force 12 XR-5,
> >compared to a 14-30 MHz LPDA.
> >
> >
> >73, Pete N4ZR
> >
> >Check out the World HF
> >Contest Station Database at
> >www.pvrc.org
> >
> >
> >
> >
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> >Towertalk@contesting.com
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> >
> >
>
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