Making contact by FM radio

[Brian]

This looks a nice piece of kit but battery consumption at 4 watts output will be very heavy.
I use the Cobra MT600 set for airsoft using 1100 mAH batteries and even at the low 500 mw output I barely get 8 hrs standby with say 10% transmission time. This Intek unit uses 1500 mAH batteries but I'd be surprised if it would last more than 4 hours or so with 10% transmission time at 4 Watts. The answer is obviously lots of alkaline batteries or some serious recharging capacity. The Intek units use 5 AA batteries and with that consumption I'd expect each unit would need at least one spare set on hand, if not two - that's up to 30 batteries per 8 - 12 hours with only two radios in use! Wow! Also these MiMH batteries deteriorate with recharging frequency and progressively hold less charge, so short-term, low/occasional usage might be the best option but up to 20 miles range is becoming useful.