| But given the restrictions placed on the output power in the 2.4GHz band,
... which are actually higher than restrictions placed on the power output in the 72 MHz band -- 1 watt in 2.4 GHz vs. 0.75 watts in 72 MHz.
That, and at 2.4 GHz a somewhat directional antenna on your TX becomes practical -- 6 dBi of gain seems reasonable, aimed in the general direction of your plane.
| is it likely that spread-spectrum systems are ever going to give the | range we currently expect from our licenced flying frequencies? From | what I've read, the Spektrum system has limited range and is aimed | at the park flyer market.
The Spektrum only puts out about 0.1 watts if I've heard right. Boost that to a full watt, add a better reasonable antenna, and the range should become similar to or better than what we're used to.
The Spektrum is just a first version, probably rushed to get it out first. It'll get better.