ORIGINAL: tsperry88
What is negative and possitive shift. Why is a transmitter a tx and a reciever an rx.
Positive and negative shift are two ways to encode the control signals sent from the transmitter to the receiver. Some manufacturers use one, some use the other. Technically, there is no advantage to either one. Just be sure your transmitter and receiver have the same shift, or that your receiver is one that automatically detects the shift of the transmitter.
Tx and rx are simply abbreviations for transmitter and receiver. The abbreviations originated with Morse Code operators many years ago, long before R/C flying was born.
- Jeff