<s>
The	O
GR	B-Protocol
connector	I-Protocol
,	O
officially	O
the	O
General	O
Radio	O
Type	O
874	O
,	O
was	O
a	O
type	O
of	O
RF	B-Protocol
connector	I-Protocol
used	O
for	O
connecting	O
coaxial	O
cable	O
.	O
</s>
<s>
Hermaphrodism	O
,	O
so	O
there	O
were	O
no	O
"	O
male	O
"	O
or	O
"	O
female	O
"	O
connectors	O
;	O
any	O
GR	B-Protocol
connector	I-Protocol
could	O
mate	O
with	O
any	O
other	O
GR	B-Protocol
connector	I-Protocol
.	O
</s>
<s>
It	O
can	O
be	O
seen	O
in	O
the	O
photograph	O
of	O
a	O
GR-900	O
to	O
GR-874	B-Protocol
adapter	O
,	O
.	O
</s>
<s>
The	O
locking	O
assembly	O
is	O
not	O
captive	O
and	O
can	O
be	O
backed	O
off	O
the	O
RF	B-Protocol
connector	I-Protocol
.	O
</s>
<s>
This	O
style	O
of	O
locking	O
mechanism	O
was	O
continued	O
in	O
GR-874	B-Protocol
'	O
s	O
thematic	O
successors	O
;	O
the	O
GR-900	O
precision	O
14mm	O
connector	O
that	O
retains	O
a	O
crenelated	O
hermaphroditic	O
mechanical	O
anti-spin	O
feature	O
to	O
protect	O
the	O
sexless	O
RF	O
interface	O
from	O
rotating	O
and	O
galling	O
when	O
the	O
locking	O
mechanism	O
is	O
tightened	O
,	O
and	O
the	O
fully	O
sexless	O
APC-7	B-Protocol
7	I-Protocol
mm	I-Protocol
connector	I-Protocol
.	O
</s>
<s>
Eventually	O
,	O
the	O
limited	O
frequency	O
range	O
of	O
a	O
14mm	O
connector	O
and	O
its	O
high	O
manufacturing	O
cost	O
overcame	O
its	O
ease	O
of	O
assembly	O
and	O
the	O
GR-874	B-Protocol
was	O
supplanted	O
generally	O
by	O
the	O
7mm	O
type	B-Protocol
N	I-Protocol
connector	I-Protocol
and	O
its	O
variants	O
,	O
the	O
BNC	B-Protocol
connector	I-Protocol
and	O
the	O
TNC	B-Protocol
connector	I-Protocol
,	O
and	O
the	O
later	O
higher	O
frequency	O
3.5mm	O
SMA	B-Protocol
connectors	I-Protocol
.	O
</s>
<s>
General	O
Radio	O
,	O
then	O
still	O
a	O
major	O
source	O
of	O
RF	O
test	O
equipment	O
,	O
designed	O
the	O
incompatible	O
GR-900	O
as	O
a	O
14mm	O
successor	O
to	O
the	O
GR-874	B-Protocol
,	O
filling	O
the	O
industry	O
's	O
need	O
for	O
a	O
higher	O
performance	O
sexless	O
connector	O
for	O
fully	O
reversible	O
lab	O
standards	O
and	O
related	O
test	O
equipment	O
.	O
</s>
<s>
The	O
GR-900	O
was	O
in	O
turn	O
succeeded	O
in	O
this	O
essential	O
niche	O
role	O
by	O
the	O
completely	O
sexless	O
APC-7	B-Protocol
connector	I-Protocol
.	O
</s>
