<s>
MCX	O
(	O
micro	O
coaxial	B-Protocol
connector	I-Protocol
)	O
are	O
coaxial	O
RF	B-Protocol
connectors	I-Protocol
developed	O
in	O
the	O
1980s	O
.	O
</s>
<s>
They	O
have	O
the	O
same	O
inner	O
contact	O
and	O
insulator	O
dimensions	O
as	O
the	O
SMB	B-Protocol
connector	I-Protocol
but	O
are	O
30%	O
smaller	O
.	O
</s>
<s>
MCX	B-Protocol
connectors	I-Protocol
use	O
a	O
snap-on	O
interface	O
and	O
usually	O
have	O
a	O
50Ω	O
impedance	O
(	O
some	O
are	O
75Ω	O
)	O
.	O
</s>
<s>
The	O
MCX	B-Protocol
connector	I-Protocol
is	O
also	O
being	O
used	O
on	O
at	O
least	O
some	O
of	O
the	O
new	O
generation	O
of	O
mostly	O
inexpensive	O
software-defined	O
oscilloscopes	O
and/or	O
signal	O
generators	O
such	O
as	O
the	O
DS212	O
.	O
</s>
