OK. I misunderstood your question. I thought you were asking about 'case 2'. BTW, the <1dB to the N/S would make sense, and is in harmony with the figure 8 pattern I mentioned.
There should be plenty of books that will show the pattern for an elliptical configuration. I don't recall the exact numbers, but really it should be about the same as the figure 8 since the elements would still be completely off the side to the N/S, and rather than E/W primary lobes you would have simply E/E. Just the gain would be +3dB toward the east relative to 'case 2'. So the answer should be about 1dB N/S, but would quickly rise as you travel toward the east of due north, and drop as you travel to the west of due north. Joe M. Laryn Lohman wrote: > --- In Repeater-Builder@yahoogroups.com, MCH <m...@...> wrote: >> All inline will be 9dB gain in one lobe. > > No argument there. > > >> Two each at 180 degrees offset will be a figure 8 with 6dB on each lobe. > > This is unrelated to my original question, but I had an engineer at DB many > years ago tell me that the above configuration will yield a pattern with very > slight, less than 1dbd, at 90 degrees to what you've described above. In > other words, two dipoles east and two dipoles west will give you <1dbd gain > to the north and south. Interesting, eh? > > >> And of course one each at 90 degrees offset will be 6dB omnidirectional. > > Yes of course. > > My original question is still-- what is the gain to the north and south with > all dipoles pointing east? > > And I know, I looked at the manufacturers data. My point here is that the > manufacturers do not agree on that gain figure. What is the correct, and I > am assuming that there is very close to ONE correct figure, for gain north > and south? > > Laryn K8TVZ > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.375 / Virus Database: 270.13.26/2257 - Release Date: 07/23/09 > 18:00:00 >
