I know of a bigger about the size of a narrow esky, a mate of mine had it, he died and its still in the shed, I know his wife when she cleans up will call me to take his junk away so I am just biding my time, dont know what it is its more complicated then the set shown and is Viet nam era not sure if vehicle mounted or a base set, let u know when I get hold of it. There also a dirty great field base antannae to go with it, he converted to mains power and we messed around with it for years.