Post by thread:[EE]: Radio fence

This was mentioned under the mowbot thread but I think it's worth it's own . I have one of these fences for my dog ( the dog can defeat it if he wishes!) and was wondering what system it employs. I can't take it apart as it is all in potting compound. I think it is based on 125KHz inductive loop(big loop - 500m approx in my case). Has any one any info on this? John -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

part 1 2050 bytes content-type:text/plain; charset=us-asciiI've got more info than you would ever want... I ran the Invisible Fence engineering team for the last 10 years! Most systems are 10.8Khz, some move down around 7khz. Since yours is potted, that sounds like Innotek's product which I believe was marketed as Pet Alert (incorporates a rechargeable battery). I don't remember any of the Radio Fence or Dogwatch products being potted. Some of the old IFCO products were, but we abandoned it because it was not necessary. Feel free to contact me if you have any other questions. Scott F. Touchton 1550 Engineering Manager JDS Uniphase |--------+-----------------------------> | | John Walshe | | | <John.Walshe@INPACT| | | MICRO.COM> | | | | | | 05/09/01 08:45 AM | | | Please respond to | | | pic microcontroller| | | discussion list | | | | |--------+-----------------------------> >----------------------------------------------------------------------------| | | | To: spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU | | cc: (bcc: Scott Touchton/US/UNIPHASE) | | Subject: [EE]: Radio fence | >----------------------------------------------------------------------------| This was mentioned under the mowbot thread but I think it's worth it's own . I have one of these fences for my dog ( the dog can defeat it if he wishes!) and was wondering what system it employs. I can't take it apart as it is all in potting compound. I think it is based on 125KHz inductive loop(big loop - 500m approx in my case). Has any one any info on this? John -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. part 2 2415 bytes content-type:application/octet-stream; (decode) part 3 131 bytes -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.