In this webinar, it was asserted (without explanation) that for every 1 dB increase in RDF, you get 1.5 to 2.0 dB improvement in S/N ratio. I've never heard that before and don't even see how it make
Hi Rick, I would also think that peak radiation angle of the RX antenna versus the arrival angle of the desired signal is also a big variable that would not allow the relationship you heard on the we
Hi Rick As I told in the webinar it is a measured practical result, not a math calculation.. I have a DDC SRD and several receiving antennas in a very clean environment, only one TX antenna detuned,
The RDF seems to be the best we have at the moment, for taking a 3-dimensional pattern and turning it into a single number. Of course the details of the 3-dimensional pattern are lost. In addition to
Hi Tim, While RDF is helpful, nothing substitutes for devoting the effort to analyze the detailed antenna pattern. RDF is especially useful in quiet rural areas with very few homes and power lines an
Hi Frank I agree with you. I'm near Fort Lauderdale in a city lot, directivity from my Vertical WF did help me a lot on 160, some rare DX like 4W6 was possible only direct and using the vertical WF.
It seems as though if data were taken as to categorize the (average or typical) noise temperature with the angle of intensity of atmospheric noise that this could be utilized as part of the RDF equat