IV3PRK at HC1PF with the help of friends proved with extensive research and
modeling, that a BOG antenna is a tuned circuit not a traveling wave antenna.
Please see the IV3PRK research and modeling links at the bottom of my BOG
antenna page www.bogantennanotes.html
73
Bruce-k1fz
The Bog is a travel wave antenna, and it is based on the difference in velocity
on the ground and on the wire, it does not interact or deteriorate with other
vertical structures like the flags. The SAL antenna is really a K9AY very
complicated but same directivity and RDF, the TX antenna does deteriorate the
pattern and you can’t see the same reduction in signal to noise ratio because
the REAL RDF is no longer the same as the CALCULATED RDF. The BoG performance
is more predictable, like the beverages and the real RDF is close to calculated
RDF.
The idea was to quantity what directivity can do for you in practical DXing.
Regards
JC
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