yes i do have a radio prc-660 manual.i have a workingmiltary radio prc-660. do not through out the old batterys for the radio prc-25/77.as they can be repacked or reused. spair parts are hard to fined.waset not wont not.email me and i will send you the pdf file manual on radio prc-660.good radio may be when you get your radio prc-660 working we can talk. im in australia.my email is email@example.com
on radio prc-660 like radio prc-77 there are 3 male pins that go in the female socket in the battery they are 15 volts and 3 volts. i found them today. you can not go wrong with the power surrply and there is a battery store in the uk england that will sell you the batterys you need for the radio prc-660. there email adrees is firstname.lastname@example.org
butt you have to order 100 batterys be for they will do any thing.tell them peter robinson told you about them from townsville.email me if you want the pdf file on the radio prc-660 manual. its free.only to happy to help.