Hi, I remembered circular polarization was used for FM broadcast due to FM car radios, but when I looked it up I found out some interesting facts, see the link below,
https://www.digitaltraders.com/index.php/index.php/components/com_kunena/template/default_ex/templates/ja_edenite/index.php?option=com_content&view=article&id=57&Itemid=134 <https://www.digitaltraders.com/index.php/index.php/components/com_kunena/template/default_ex/templates/ja_edenite/index.php?option=com_content&view=article&id=57&Itemid=134>Interesting white paper on FM Broadcast and why they had historically had circular polarization and why they are now changing to vertical polarization. Peter On Thu, Sep 2, 2010 at 1:22 AM, burkleoj <[email protected]> wrote: > > > Gary, > I am in Southern Oregon and I understand exactly what you are experiencing. > We have very similar problems down here with our club's repeater. I have > often talked about and even done some serious looking at remodeling a set of > broadcast loops and harness for 2 Meters. > > I know there was a southern California repeater back in the 70's that used > circular polarization with excellent results. They were able to provide much > better coverage in their main service area, but did loose some long distance > coverage outside their main coverage area. > > We have had the best success by using a lower gain antenna. We have been > using the Telewave broadband two loop antennas with 2 - 4 degrees of > downtilt, for both our 2 Meter and 440 MHz repeaters. I have found much > better close in (0-30 Miles) coverage, less muti-path, and they cost quite a > bit less than a Super Stationmaster. > > Good Luck and keep us posted with what you find for results. > > Joe - WA7JAW > > > --- In [email protected]<Repeater-Builder%40yahoogroups.com>, > "Gary - K7EK" <gary.k...@...> wrote: > > > > > > Greetings, > > > > I am in a particularly sticky situation with one of my two meter > repeaters in Lakewood, WA (Tacoma). I have generally great coverage, however > there is a very annoying problem with multipath and raspy signals in a large > portion of my coverage area. Since the Puget Sound area of Western > Washington is very hilly and mountainous, multipath is very damaging to all > forms of VHF communication. > > >
