as in the texts below, there is something else going on here. That Diplexor can not be all that bad. two reasons.
How many db down is the front to side of that antenna? and I can not imaging someone would sell a diplexor that has greater than 20 db of losses. because of the statement that how criticalpolarity was with the original, and now the antenna has to be nearly 90 degrees cross polarized to make it drop out uhh that close to 30 db, at least 20,, something else is going on here Gary "Joe" Mayfield wrote: >> >>Another issue I came across was how wide the beamwidth is of the Arrow >>Antenna between the Arrow diplexer and the new diplexer. I was wondering >> >> >if > > >>this was going to happen and it did. The reason that this happened was >> >> >with > > >>the old diplexer, the signal attenuated so much that you had to be pointed >>right smack dab on the bird, a few degrees off and you lost the signal. >>Now, with the new diplexer, you can point the beam in the general >> >> >direction > > >>and still copy the bird. In most cases I had to turn the beam 90 degrees >>before I completely lost the downlink! Twisting the antenna to make >>polarization changes makes absolutely no difference now. This also >>attributes to the fact that now I'm copying the entire pass without >> >> >dropouts > > >>or fades. Makes sense. What I've regained over the lossy diplexer makes >> >> >up > > >>for any polarization differences, etc. for a better copiable signal. >> >>Next weekend I will have to try more passes and get a feel of how much >> >> >this > > >>system has changed. >> >> >>73, >> >>Jeff WB3JFS >>Las Vegas, NV >>DM26 >> >> >> >> >> >> >>_______________________________________________ >>Sent via amsat...@amsat.org. Opinions expressed are those of the author. >>Not an AMSAT-NA member? Join now to support the amateur satellite program! >>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> > >_______________________________________________ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > >_______________________________________________ >Sent via amsat...@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > >------------------------------------------------------------------------ > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2395 - Release Date: 09/25/09 >17:52:00 > > > _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
