[RTTY] What's the reason for the "R" prefix?

[David Levine]

The Royal Wedding - http://www.rsgb.org/news/articlelinks.php?id=0123


K2DSL - David

On Sat, Apr 30, 2011 at 11:36 PM, Mike <k4gmh at arrl.net> wrote:

> Hello,
>
> Worked several G stations with familiar call signs except for the
> additional
> "R" in the prefix.  What is the occasion for the "R"?
>
> --
>   73,
>   Mike, K4GMH