DSSS allows a small number of non-overlapping channels. Most DSSS products offer one non-overlapping channel, the most sophisticated offers only three. DSSS inherently consumes more power than FHSS products, requiring heavier batteries or more frequent recharges. Power amplifiers for DSSS transmitters are less efficient than their FHSS counterparts. This causes significantly higher power consumption in the DSSS products.
Light weight is critical for mobile applications.
FHSS technology allows significantly lighter products to be developed. Security Data from DSSS products is more easily intercepted than data from a FHSS product. FHSS was originally deployed by the military because of the fact that it is difficult to intercept and jam. This advantage is now available to commercial users. There are infinite combinations of dwell times and hopping sequences.