This Pierson-Holt K E-93 Power Pack with S-Meter is RARE and Collectible!. This Power Pack was sold for use with the KE-93 Receiver which is rare to find. There were far fewer of this Power Pack offered so this is a great find! I am selling it as is as described for parts or repair. It has not been tested but due to it's age (over 60 years old!) it is a good bet it will need some attention The KE-93 power pack combination is a 110-120VAC supply which included a built-in S-meter and speaker If you have a KE-93 receiver this will be the 110-120 volt AC supply needed for fixed operation.