Thanks for that good bit of info, Kip. If any others are working on this project and wish to share your info, please send me an email with any info you wish posted here. Tim has some thoughts on another possible source for an inexpensive copy of the Wavecom Jr. As far as I can glean from what I have read, the Wavecom is exactly the same unit as a number of other brands sold under other names, such as the Emerson EVS5000. I believe that they are all made in China.
Extra transmitters are about the same.
I am a complete novice when it comes to this stuff, but when I cracked open my Emerson and compared it to the photo of the Wavecom circuit board at your site, I could see no difference. The three key resistors do have different numbers than the numbers mentioned by Alan Glynn, however. Please let me know if I have been of any help, or if you can, confirm for me the info I am offering. Sincerely, Tim O'Brien Thanks for that good bit of info, Tim. If any others are working on this project and wish to share your info, please send me an email with any info you wish posted here.