<s>
The	O
4-millimeter	B-Algorithm
band	I-Algorithm
is	O
a	O
portion	O
of	O
the	O
EHF	O
(	O
microwave	O
)	O
radio	O
spectrum	O
internationally	O
allocated	O
to	O
amateur	O
radio	O
and	O
amateur	O
satellite	O
use	O
.	O
</s>
<s>
Amateur	O
radio	O
shares	O
the	O
band	O
with	O
radio	O
astronomy	O
,	O
vehicular	O
radars	B-Application
for	O
adaptive	O
cruise	O
control	O
,	O
and	O
aircraft	O
FOD	O
detection	O
radars	B-Application
.	O
</s>
<s>
The	O
International	O
Telecommunication	O
Union	O
allocates	O
76.0GHz	O
to	O
81.0GHz	O
to	O
amateur	O
radio	O
,	O
amateur	O
satellites	O
,	O
radio	O
astronomy	O
and	O
radiolocation	B-Algorithm
(	O
radar	B-Application
)	O
and	O
space	O
research	O
downlinks	O
.	O
</s>
