Hello, Some time ago I found a muTek GLNA432e at eBay. It was inadvertently advertised as a 144 MHz unit and was also supplied with a SBLA144e schematic. So I'm at a loss how to troubleshoot this nonworking unit. I have searched the net but found nothing useful. If anyone knows anything about this unit, e.g., transistor used or even better the schematic, please let me know. It is a vintage well built 1983 unit with RF sense switching so I really would like to get it up and running. Thanks Ben AB4AB