Mike, I worked in the NY Tel. shop on Long Island, in Bethpage, in the 1970's. The Motorola shop was around the corner (Plainview). Most of our stuff went through them. The logic board (Supervisory Board) was a nightmare to work on. We had the VHF and UHF T1414-type radios with the heads that had the 11-12 channel switches along the top. Jack WA2HWJ