gently used Sony ICF-SW7600G. Be careful, Sony has made a variety of

I assume (being unliterate in the SW stuff) the Sony ICF-SW7600G will be the
one to look for (used).

Up to now I found some (not on the inexpensive side though...) Sony
ICF-SW7600G and Sony ICF-SW7600GR for sale.

Is there any special requirement for an antena (if I need one)?