Found this manual on line which looks to be of great use to people who use Military surplus electronics. http://www.introni.it/pdf/Surplus_radio_conversion_manual_vol1.pdf -- Kenneth A. Crips, W7ITC Home of the Chew Crew, Red Headed Irish Terrier House Ninjas, Beezie, Chic', and Cowboy 10th degree black belts in Mouch Fue, Bed Fue, and Con Artist Fue.