On Saturday, March 24, 2012 04:22:50 PM Jon Elson did opine: > Erik Christiansen wrote: > > The "normal" TV antennas we have here are Yagis, i.e. a metal pipe > > with crossbars decreasing in length toward the end which is pointed > > at the transmitter. The second-last "crossbar" is comprises two > > insulated halves of the receiving element, which are connected to 300 > > Ohm ribbon, or via a Balun to 75 Ohm coax cable. > > A Yagi is a single-frequency (or at least narrow-band) antenna. Most TV > antennas are at least partly a log-periodic array, possibly with > something else > for UHF band. > > Jon > And because of that, are much less sensitive to the weather. Put a coat of rime ice on a yagi and its out of business, the log periodic might fade a bit but it generally just keeps on working.
Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> I never cheated an honest man, only rascals. They wanted something for nothing. I gave them nothing for something. -- Joseph "Yellow Kid" Weil ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
