The demo program at http://eznec.com/ will provide honest anwers to many of your questions. John Ferrell W8CCW "Life is easier if you learn to plow around the stumps" http://DixieNC.US ----- Original Message ----- From: "Jinx" To: "pic microcontroller discussion list" Sent: Friday, April 13, 2007 10:28 PM Subject: [EE] Slim Jim antenna > I'm going to try the Slim Jim method (pipe or 300ohm), suggested > by the list a little while ago, to see if it extends the range of a 433MHz > data transmitter. Present range is about 100m+ with a 1/2 wave > heavy-gauge copper wire > > http://www.hamuniverse.com/slimjim.html > > http://www.hamuniverse.com/2meter300ohmslimjim.html > > On those pages it shows both conductors of coaxial connecting to the > Slim Jim. I understand that the core would be connected to the aerial, > but where does the braid fit in ? > > The transmitter I use has an antenna output, which would be the core > of the coax. Does the braid connect to the transmitter ground or what ? > It seems to me that would just short the transmitter output. Do the > radios this is intended for differ to what I'm thinking of ? > > 433MHz is about 69cm. Any suggestions re comparison to 2m ? > > TIA > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist