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My local TIS/MIS has a pair of transmitters on opposite sides of town. Their synchronization is anything but exemplary. Being somewhat away from them both, I hear them both. The audio sounds like it is under water, with the gurgling sound to it. I measured the two carriers just now and found them off by 30Hz, just as they were months ago when I wrote the city administration and pointed this out. At that time the second system was new and in the process of being fine tuned, now it is just neglected. This city radio station is operated by the department that manages and programs the city cable TV channel. Yet another channel I've never watched...don't even know which one it is. One more hole down which the city pi$$e$ away the taxpayers' money. And they wonder why there is a property tax revolt under way state wide. Need I mention that the "Emergency Advisory Radio Service" radio station was off the air for four day following hurricane Wilma, the direct hit on Boca a couple years ago. But what the hey, I was without power for eight days, so I shouldn't have even noticed. God save us from the politicians. Curt ------- W. Curt Deegan Boca Raton, (southeast) Florida, USA At 10:09 PM 5/11/2007, you wrote: >PLEASE read the [IRCA] mailing list guidelines at >http://www.ircaonline.org/guidelines.htm > >There's a pair of TIS/HARs at the Mackinac Bridge in >Michigan. One of the bridge transmits at 530, the >other end at 1610. Obviously not syncronized, but they >are parallels. > >Also, from what I understand about synchronizers (and >I heard this at my last amateur radio club meeting) >they run about $20K for each site. But in mountainous >areas, I can see where they are necessity. > >Thx for sharing, > >73 de Joe Miller, AB8YP > > >--- Pete Taylor <[EMAIL PROTECTED]> wrote: > >[snip] > > Meanwhile, there is a TIS/HAR on 1580 in Puyallup > > (Puyallup abuts > > Tacoma. It is pronounced "pyou-AL-up). It is run by > > the city and has > > good coverage. Its primary purpose is to be there in > > the case of a > > lahar. (A lahar is what happens if a volcano erupts > > - all the flowing > > lava, etc.) Recently the station started giving two > > sets of call > > letters. I couldn't tell any difference driving > > around Tacoma. > > However, I drove to an area east of Puyallup a > > couple of weeks ago > > and could discern two signals in an area on the way > > back. They were > > beautifully synced; there was no discernable beat. > > You could only > > sense it when one would drop out due to terrain. A > > newspaper article > > indicated that the new one was in a place called > > Orting. Additional > > ones are planned, apparently. Other than LAX, does > > anyone else know > > of other synced TIS/HARs? > > > > Pete Taylor > > Tacoma, WA > > 12225w 4719n > > ICF2010 + Kiwa air core loop > > DX398; Palomar loop > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
