[Geysers] GOSA radios ?

[billmb at att.net]

Dear Gazers,
  Susie and I have been going to YNP many years but
have never had radios. Could someone please advise us
what specs are required and some suggested models, and
the best place to get them ? We would appreciate any
advice on this.
  To keep from cluttering up the site, please just
e-mail us at billmb at att.net or susiebb at att.net.
  Thank you,
  Susie and Bill Boyce