<s>
The	O
VINSON	B-General_Concept
KY-58	B-General_Concept
is	O
a	O
secure	O
voice	O
module	O
primarily	O
used	O
to	O
encrypt	O
radio	O
communication	O
to	O
and	O
from	O
military	O
aircraft	O
and	O
other	O
tactical	O
vehicles	O
.	O
</s>
<s>
It	O
is	O
designed	O
to	O
operate	O
over	O
bandwidth-restricted	O
circuits	O
such	O
as	O
UHF	O
and	O
VHF	B-Algorithm
satellite	O
access	O
and	O
wideband	O
switched	O
telephone	O
systems	O
.	O
</s>
<s>
It	O
uses	O
the	O
16	O
kbit/s	O
continuously	B-Algorithm
variable	I-Algorithm
slope	I-Algorithm
delta	I-Algorithm
modulation	I-Algorithm
(	O
CVSD	B-Algorithm
)	O
.	O
</s>
