ORIGINAL: tsunami
finally found one ^_^. but after running it for abou8t 10 min i noticed the range drop from about 10 to 6 in on the surface and almost zero when dived,will lengthening the antena help
Try using the 1.2 Volt AA 2300 mAh NiMh batteries made by Eveready or other generic types that you can find.
Using the sub's three motors at the same time drastically shortens it's operating range. I've tried using 1.5 Volt AA rechargeable Alkaline but the operating time is short. The 2300 mAh batteries can handle the current drain with minimal drop in operating range.
Lengthening the antenna helps boost the signal approximately 50 to 75% of it's "normal" operating range.