Good question. I think 50 ohms is a good assumption but I can't substantiate
that. I used grounded RG8 with my dx398 with very good results.


Brian
"Conan Ford" wrote in message
3.159...
Probably a dumb question, but on a portable, such as a Yacht boy, or one
of
those cheap chinese models that uses an earphone plug for the antenna
connection, what is the designed antenna impendence? I'm in a basement,
and I want to connect to a wire outside, with 50 ohm coax. Are the
earphone-plug antenna connections supposed to usually be for 50 ohms, or
something different? With the normally supplied wire that these radios
come with, they go directly to the wire, I don't think there is a matching
transformer.