Same dependable quality as the F1-ND, but with added function of locating a snowmobile. The SLED BUG attaches to the wiring harness on a snowmobile. The SLED BUG transmitter is located in the same fashion as a normal search, except that you use the SB channel of the beacon. New seven LED bar graph improves the sensitivity while searching. 80m-457 kHz. 50m-SB channel. *The SLED BUG is not intended for personal use.