ZCZC I have a Teletype LABD 500, which is a shoe-box size green box with a motor and 33-type answerback unit inside. It uses the standard 32/33 plastic answerback drum. I've had it for many years and just today put it on the bench for a checkout. The unit sends the following at 66 wpm: WU TEST LVL B Does anyone know what that might mean or where/how the box could have been used? Jack WA2HWJ NNNN