Radion Horn Speaker
|This tiny horn
speaker measures only 11 inches tall, and the bell is 3 1/2 inches in
only markings that would give a clue to origin is the word "Radion" and the word
"Ace" inside the outline of a spade (as in ace of spades)
engraved in the neck of the hard rubber horn.
The ace logo and the Radion name were trademarks of the American Hard Rubber Company of New York, NY., however, it is not clear whether this company marketed the complete speaker, or sold just the horn to someone else.
The driver is a standard, commonly used Utah unit. The horn is supported by a steel bracket which is welded to the driver housing. The bottom is rounded, so it is not stable when placed on a flat surface. It is likely that it was meant to be mounted to a vertical surface (two holes in the bracket appear to be for this purpose).