<s>
The	O
1.25-meter	O
,	O
220	O
MHz	O
or	O
222	O
MHz	O
band	O
is	O
a	O
portion	O
of	O
the	O
VHF	B-Algorithm
radio	O
spectrum	O
internationally	O
allocated	O
for	O
amateur	O
radio	O
use	O
on	O
a	O
primary	O
basis	O
in	O
ITU	O
Region	O
2	O
,	O
and	O
it	O
comprises	O
frequencies	O
from	O
220MHz	O
to	O
225MHz	O
.	O
</s>
<s>
The	O
1.25-meter	B-Algorithm
band	I-Algorithm
has	O
a	O
very	O
long	O
and	O
colorful	O
history	O
,	O
dating	O
back	O
to	O
before	O
World	O
WarII	O
.	O
</s>
<s>
In	O
1938	O
,	O
the	O
FCC	O
gave	O
U.S.	O
amateurs	O
privileges	O
in	O
two	O
VHF	B-Algorithm
bands	I-Algorithm
:	O
2.5meters	O
(	O
112MHz	O
)	O
and	O
1.25meters	O
(	O
224MHz	O
)	O
.	O
</s>
<s>
Both	O
bands	O
(	O
as	O
well	O
as	O
70	O
centimeters	O
)	O
were	O
natural	O
harmonics	O
of	O
the	O
5-meter	B-Algorithm
band	I-Algorithm
.	O
</s>
<s>
Amateur	O
privileges	O
in	O
the	O
2.5-meter	O
band	O
were	O
later	O
moved	O
to	O
144	O
–	O
148MHz	O
(	O
becoming	O
the	O
modern-day	O
2-meter	B-Algorithm
band	I-Algorithm
)	O
,	O
and	O
the	O
old	O
frequencies	O
were	O
reassigned	O
to	O
aircraft	O
communication	O
during	O
World	O
WarII	O
.	O
</s>
<s>
At	O
that	O
time	O
,	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
expanded	O
to	O
a	O
5MHz	O
bandwidth	O
,	O
spanning	O
220	O
–	O
225MHz	O
.	O
</s>
<s>
Amateur	O
use	O
of	O
VHF	B-Algorithm
and	O
UHF	O
allocations	O
exploded	O
in	O
the	O
late	O
1960s	O
and	O
early	O
1970s	O
as	O
repeaters	O
started	O
going	O
on	O
the	O
air	O
.	O
</s>
<s>
Repeater	O
use	O
sparked	O
a	O
huge	O
interest	O
in	O
the	O
2-meter	O
and	O
70-centimeter	O
(	O
420	O
–	O
450MHz	O
)	O
bands	O
;	O
however	O
,	O
this	O
interest	O
never	O
fully	O
found	O
its	O
way	O
into	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
.	O
</s>
<s>
Many	O
amateurs	O
attribute	O
this	O
to	O
the	O
abundance	O
of	O
commercial	O
radio	O
equipment	O
designed	O
for	O
136	O
–	O
174MHz	O
and	O
450	O
–	O
512MHz	O
that	O
amateurs	O
could	O
easily	O
modify	O
for	O
use	O
on	O
the	O
2-meter	O
and	O
70-centimeter	B-Algorithm
bands	I-Algorithm
.	O
</s>
<s>
There	O
were	O
no	O
commercial	O
frequency	O
allocations	O
near	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
,	O
and	O
little	O
commercial	O
radio	O
equipment	O
was	O
available	O
.	O
</s>
<s>
This	O
meant	O
that	O
amateurs	O
who	O
wanted	O
to	O
experiment	O
with	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
had	O
to	O
build	O
their	O
own	O
equipment	O
or	O
purchase	O
one	O
of	O
the	O
few	O
radios	O
available	O
from	O
specialized	O
amateur	O
radio	O
equipment	O
manufacturers	O
.	O
</s>
<s>
Many	O
of	O
the	O
repeaters	O
which	O
have	O
been	O
constructed	O
for	O
1.25-meter	O
operation	O
have	O
been	O
based	O
on	O
converted	O
land-mobile	O
base	O
station	O
hardware	O
,	O
often	O
extensively	O
modifying	O
equipment	O
originally	O
designed	O
for	O
other	O
VHF	B-Algorithm
bands	I-Algorithm
.	O
</s>
<s>
By	O
the	O
1980s	O
,	O
amateur	O
use	O
of	O
2-meter	O
and	O
70-centimeter	B-Algorithm
bands	I-Algorithm
was	O
at	O
an	O
all-time	O
high	O
while	O
activity	O
on	O
1.25meters	O
remained	O
stagnant	O
.	O
</s>
<s>
In	O
1973	O
,	O
the	O
FCC	O
considered	O
Docket	O
Number19759	O
,	O
which	O
was	O
a	O
proposal	O
to	O
establish	O
a	O
ClassE	O
Citizen	B-Application
's	I-Application
band	I-Application
service	O
at	O
224MHz	O
.	O
</s>
<s>
The	O
proposal	O
was	O
opposed	O
by	O
the	O
ARRL	O
and	O
after	O
the	O
explosive	O
growth	O
of	O
27MHz	O
Citizen	B-Application
's	I-Application
Band	I-Application
usage	O
,	O
the	O
FCC	O
dropped	O
consideration	O
of	O
the	O
docket	O
in	O
1977	O
.	O
</s>
<s>
In	O
the	O
late	O
1980s	O
,	O
United	O
Parcel	O
Service	O
(	O
UPS	O
)	O
began	O
lobbying	O
the	O
FCC	O
to	O
reallocate	O
part	O
of	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
to	O
the	O
Land	O
Mobile	O
Service	O
.	O
</s>
<s>
UPS	O
had	O
publicized	O
plans	O
to	O
use	O
the	O
band	O
to	O
develop	O
a	O
narrow-bandwidth	O
wireless	O
voice	O
and	O
data	O
network	O
using	O
a	O
mode	O
called	O
ACSSB	B-Device
(	O
amplitude-companded	O
single	B-Device
sideband	I-Device
)	O
.	O
</s>
<s>
In	O
1988	O
,	O
over	O
the	O
objections	O
of	O
the	O
amateur	O
radio	O
community	O
,	O
the	O
FCC	O
adopted	O
the	O
220	O
MHz	O
Allocation	O
Order	O
,	O
which	O
reallocated	O
220	O
–	O
222MHz	B-Algorithm
to	O
private	O
and	O
federal	O
government	O
land-mobile	O
use	O
while	O
leaving	O
222	O
–	O
225MHz	O
exclusively	O
for	O
amateur	O
use	O
.	O
</s>
<s>
With	O
the	O
220	O
–	O
222MHz	B-Algorithm
band	O
then	O
left	O
unused	O
,	O
the	O
FCC	O
issued	O
parts	O
of	O
the	O
band	O
to	O
other	O
private	O
commercial	O
interests	O
via	O
a	O
lottery	O
in	O
hopes	O
that	O
it	O
would	O
spark	O
development	O
of	O
super-narrowband	O
technologies	O
,	O
which	O
would	O
help	O
them	O
gain	O
acceptance	O
in	O
the	O
marketplace	O
.	O
</s>
<s>
In	O
the	O
1990s	O
and	O
into	O
the	O
2000s	O
paging	B-Application
companies	O
made	O
use	O
of	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
.	O
</s>
<s>
Most	O
all	O
such	O
use	O
ended	O
by	O
the	O
mid-2000s	O
,	O
with	O
the	O
paging	B-Application
companies	O
being	O
purchased	O
by	O
others	O
and	O
services	O
moved	O
to	O
newer	O
systems	O
,	O
or	O
having	O
gone	O
out	O
of	O
business	O
.	O
</s>
<s>
In	O
2005	O
,	O
Industry	O
Canada	O
decided	O
to	O
reallocate	O
220	O
–	O
222MHz	B-Algorithm
to	O
land	O
mobile	O
users	O
,	O
similar	O
to	O
the	O
US	O
,	O
but	O
unlike	O
in	O
the	O
US	O
,	O
a	O
provision	O
was	O
included	O
to	O
allow	O
the	O
amateur	O
service	O
,	O
in	O
exceptional	O
circumstances	O
,	O
to	O
use	O
the	O
band	O
in	O
disaster	O
relief	O
efforts	O
on	O
a	O
secondary	O
basis	O
.	O
</s>
<s>
Today	O
,	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
is	O
used	O
by	O
many	O
amateurs	O
who	O
have	O
an	O
interest	O
in	O
the	O
VHF	B-Algorithm
spectrum	O
.	O
</s>
<s>
The	O
number	O
of	O
repeaters	O
on	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
has	O
grown	O
over	O
the	O
years	O
to	O
approximately	O
1,500	O
nationwide	O
as	O
of	O
2004	O
.	O
</s>
<s>
Operation	O
of	O
such	O
control	O
links	O
in	O
the	O
crowded	O
2-meter	B-Algorithm
band	I-Algorithm
is	O
problematic	O
and	O
on	O
many	O
frequencies	O
in	O
that	O
band	O
expressly	O
prohibited	O
,	O
leaving	O
1.25-meter	B-Algorithm
band	I-Algorithm
frequencies	O
as	O
the	O
lowest	O
available	O
for	O
remote	O
control	O
of	O
repeaters	O
and	O
unattended	O
stations	O
.	O
</s>
<s>
This	O
exacerbates	O
the	O
lack	O
of	O
usage	O
of	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
,	O
though	O
manufacturers	O
argue	O
that	O
what	O
equipment	O
they	O
have	O
produced	O
has	O
n't	O
sold	O
well	O
compared	O
to	O
other	O
products	O
.	O
</s>
<s>
In	O
recent	O
years	O
,	O
Kenwood	O
and	O
Yaesu	O
have	O
both	O
included	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
in	O
some	O
of	O
their	O
multiband	O
handheld	O
transceivers	O
.	O
</s>
<s>
The	O
KenwoodTH-F6A	O
and	O
TH-D74A	O
;	O
the	O
YaesuVX-6R	O
,	O
VX-7R	O
and	O
VX-8R	O
(	O
USA	O
and	O
Canada	O
version	O
)	O
include	O
coverage	O
of	O
the	O
1.25-meter	B-Algorithm
band	I-Algorithm
in	O
addition	O
to	O
the	O
more	O
popular	O
2-meter	O
and	O
70-centimeter	B-Algorithm
bands	I-Algorithm
.	O
</s>
<s>
During	O
2021	O
,	O
Baofeng	O
then	O
introduced	O
its	O
latest	O
,	O
and	O
cheapest	O
,	O
UV-5r	O
III	O
handheld	O
transceiver	O
,	O
which	O
now	O
includes	O
the	O
1.25	B-Algorithm
meter	I-Algorithm
band	I-Algorithm
as	O
standard	O
.	O
</s>
<s>
The	O
Chinese	O
company	O
Wouxun	O
offers	O
a	O
2m	O
and	O
1.25m	B-Algorithm
dual-band	O
HT	O
,	O
the	O
KG-UVD1P	O
.	O
</s>
