rickmc@IASTATE.EDU (Mcintosh Ricky Joe S) (06/11/91)
Keywords: Hello, I am building a device to broadcast digital information. I need an RF Transmitter and a receiver that uses a frequency and a signal strength with in FCC regulations such that I don't have to apply for anything. I can use the remote control frequencies because I am adding A LOT of error correction. I need a distance of 50 yards. I do not need to broadcast through any objects. Infra red or Ultrasonics will not work mainly because the transmitter will be moving in an unpredicable manner. Other requirements are the signal will be 65K baud. IE a max frequency of 32.5K (as a squarewave) so I need a large band width to handle the first several harmonics. I would like something in the 0 - 500Khz. I would like a reliable but simple circuit, that is as small as possible. I do not need multiple channels one would be sufficient. I would like to use a crystal so calibration will not be necessary. The input will be a TTL signal from a UART. If anybody has anything they would be willing to share I would appreicate it. Thanks in advance. Rick.