All the replies I've gotten have been really helpful. Including the replies on the posting I have in the General catagory. I do, of course, have a few more questions.
1. What type of radio should I get? I've been told the Robbe F14 is good because it is expandable. Or is there one out there that's better?
2. I'm playing with the idea of making my own piston ballast system. Have a plunger compress the air in the tank, which allows water to enter. Retract Piston, to allow air to expand expelling water.
3. What kind of electronics are involved. I know about engines and cirvo's. But I'm a complete beginner when it comes to transmitters/recievers and anything else that the sub might need. Including automatic leveler. Can anyone steer me to a good book?
Thanks in advance.