Note
QST, Aug 1962, p. 114.
Ameco catalog #5, 1967
Model CSB makes band switching possible with several VHF Converters. It has a 4-position selector switch that allows the user to switch any one of up to 3 converters or connects the receiver directly to the low band antenna. Both RF and power are automatically switched.
Model CSB plugs directly into the Ameco PS-1 power supply and Ameco converters.
It can also be used with other makes of converters and power supplies.