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Vibrator HT unit for RCA AR88

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Manufacturer  
Model MI-8319
Age 1944
Service Data Yes
Condition Good, working
Dimensions About 4"x4"x 8" (10x10x20cm)
Comments These units were made for the US army to allow the use of the RCA AR88 receivers to be used in a mobile arrangement. The unit provides a 250v high tension supplyfrom a 6v dc input (vehicle battery), the heater supplies coming straight from the battery. The unit has a non-sychronous vibrator driving a transdormer, with the output rectified by an 0Z4 cold cathode rectifier. The switch changes taps on the transformer to compensate for lower battery voltage, or ageing of the rectifier valve. I also use these units as a convenient HT source for homebrew recievers.

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Copyright J.Beacon & M.Wroe-Parker 2003