Query: "Radio" as a 1913 nickname

[Gerald Cohen]

    Would anyone be familiar with the nickname "Radio" referring to a
speedy person?  The newspaper _San Francisco Bulletin_ in one article
refers to S.F. Seals' speedy outfielder Jimmy Johnston by this
nickname, but no explanation is given.

     Could it be that Johnston's speed was likened to that of radio
signals and for 1913 readers no explanation of this was necessary?

      The article with "Radio" appears on May 15, 1913, p.14, col. 1;
title: 'If Seals dispose of Oaks...'; here is the relevant quote:

'"Radio Jimmy" Johnston was one of the main features of yesterday's
game. It is certain that the Recreation Park multitude never looked a
faster Coaster over. ... "Radio" can see an opening where no one else
can and is equally capable in taking advantage of it.  He has the
speed of an express train... When Jimmy crossed the rubber, Gus
grinned appreciatively... Later in the game "Radio" stole second
again,....'

---Gerald Cohen