mvs sarma Well-Known Member Jun 14, 2013 #2 perhaps you have to imagine and reverse engineer it. Earlier, Business Promotion Bureau (PBP) used to publish these valve radio diagrams. checck if some library of any college got them. perhaps www.eserviceinfo.com can be of some help
perhaps you have to imagine and reverse engineer it. Earlier, Business Promotion Bureau (PBP) used to publish these valve radio diagrams. checck if some library of any college got them. perhaps www.eserviceinfo.com can be of some help