<s>
They	O
consist	O
of	O
30	B-Algorithm
meters	I-Algorithm
(	O
10.100	O
–	O
10.150MHz	O
)	O
,	O
17	B-Algorithm
meters	I-Algorithm
(	O
18.068	O
–	O
18.168MHz	O
)	O
and	O
12	B-Algorithm
meters	I-Algorithm
(	O
24.890	O
–	O
24.990MHz	O
)	O
.	O
</s>
<s>
Due	O
to	O
their	O
relatively	O
small	O
bandwidth	B-Algorithm
of	O
100kHz	O
or	O
less	O
,	O
there	O
is	O
a	O
gentlemen	O
's	O
agreement	O
that	O
the	O
WARC	B-Algorithm
bands	I-Algorithm
may	O
not	O
be	O
used	O
for	O
general	O
contesting	O
.	O
</s>
<s>
Non-contesting	O
radio	O
amateurs	O
are	O
recommended	O
to	O
use	O
the	O
contest-free	O
HF	O
bands	O
(	O
30	O
,	O
17	O
,	O
and	O
12m	B-Algorithm
)	O
during	O
the	O
largest	O
international	O
contests	O
.	O
</s>
<s>
Throughout	O
most	O
of	O
the	O
world	O
,	O
the	O
30	B-Algorithm
meter	I-Algorithm
band	I-Algorithm
generally	O
cannot	O
be	O
used	O
for	O
"	O
phone	O
"	O
(	O
voice	O
)	O
communications	O
.	O
</s>
<s>
Australia	O
(	O
VK	O
,	O
region	O
3	O
)	O
has	O
a	O
unique	O
set	O
of	O
privileges	O
on	O
30	B-Algorithm
meters	I-Algorithm
which	O
allows	O
voice	O
operation	O
on	O
a	O
section	O
of	O
the	O
band	O
for	O
advanced	O
license	O
holders	O
.	O
</s>
<s>
These	O
are	O
WIA	O
recommendations	O
only	O
as	O
ACMA	O
does	O
not	O
restrict	O
Australian	O
amateurs	O
 '	O
modes	O
within	O
HF	O
allocations	O
beyond	O
requiring	O
less	O
than	O
8kHz	O
occupied	O
bandwidth	B-Algorithm
per	O
channel	O
below	O
28MHz	O
.	O
</s>
