[R-390] Twinax Connectors

[Jim Haynes]

That's a pretty attractive price.

Those connectors were used in the IBM token-ring networking system.  I 
once found a bunch of them in a surplus store that were attached to
transformers with a modular-style plug on the end.  Someone suggested
this is a good way to transform the balanced input of the R-390 to
an unbalanced antenna.  I've used them for that, but don't have
any information on how well they perform that way.

Jim W6JVE

jhhaynes at earthlink dot net