Tests to answer the question "is the FCP better than counterpoise X" can be answered by 28 MHz scale models.
The question "the FCP is better at 1.8 MHz by Y dB" cannot be answered by 28 MHz scale models. What question do we really need answered? Dave WX7G On Dec 21, 2012 11:30 AM, "Tom W8JI" <[email protected]> wrote: > > ----- Original Message ----- From: "Guy Olinger K2AV" < > [email protected]> > To: "TopBand List" <[email protected]> > Sent: Thursday, December 20, 2012 7:25 PM > Subject: Topband: Lab style comparison results on 160m small lot > antennachanges. > > > A prior poster, lamenting the nature of FCP success reports, wrote: >> >> "Who has done that, with only a radial change, against an unchanged >> reference antenna that is in the far field of the antenna under test. >> [Where's the post with the details] ?" >> >> Perfectly logical question. We all would like that answered with posts >> listing lab grade experiments. >> > > > Because of antenna size, laboratory measurements are impossible on lower > bands. For that reason we can't make lab-style comparisons. > > There is one thing, though, that we probably all agree on. > > If more than one thing that can affect results changes in an unknown way > in any test or experiment, like the ionosphere or reworking an entire > antenna system from less-than-good system to a new one, we really don't > know what caused the change or if any one particular thing was responsible > for the change. > > If we A-B against any unchanged reference, we at least know which was > better than the reference and how much better. None of this requires a lab, > precise equipment, is unreasonable, or is in the most remote way unfair. It > just requires reasonable methods. > > 73 Tom > ______________________________**_________________ > Stew Perry Topband Distance Challenge coming on December 29th. > _______________________________________________ Stew Perry Topband Distance Challenge coming on December 29th.
