And yes Ken, you're right, the supply was 800HZ, 120VAC for both the TBW and the GO-9. The The supply had various values of switched capacitors to match the dynamotor, which I believe was a PE-103A or a PE-3 for the GO, just not sure of the designator. For the TBW it was a gas powered 800HZ 120VAC. The TBW was normally supplied in 3 water-tight cases, the GO is not, each section connects to the others.