My RV-3 and I are both trying to lose weight. The goal is 6 pounds for me (1 gallon) and 25 or so for the '3 (another 4 gallons). I'm down 3 of the 6 so far, and I'm thinking for the '3 to go to a gel-cell battery and remove the ELT. Instruments and avionics are already pretty minimal so the battery and elt is about all that's obvious. Not sure of ELT requirements for single place a/c. I could look this up but I know several of you probably know this cold. For a single place a/c, ie. RV-3, what is the minimum ELT requirement, what is the lightest ELT if I need it, and how far can I go with no ELT installed? (I'd be using a PLB in that instance). Thanks.