<s>
RFinder	B-Application
(	O
"	O
repeater	O
finder	O
"	O
)	O
is	O
a	O
subscription-based	O
website	O
and	O
mobile	B-Application
app	I-Application
.	O
</s>
<s>
RFinder	B-Application
's	O
main	O
service	O
is	O
the	O
World	B-Application
Wide	I-Application
Repeater	I-Application
Directory	I-Application
(	O
WWRD	O
)	O
,	O
which	O
is	O
a	O
directory	O
of	O
amateur	O
radio	O
repeaters	O
.	O
</s>
<s>
RFinder	B-Application
is	O
the	O
official	O
repeater	O
directory	O
of	O
several	O
amateur	O
radio	O
associations	O
.	O
</s>
<s>
RFinder	B-Application
has	O
listings	O
for	O
several	O
amateur	B-Protocol
radio	I-Protocol
modes	I-Protocol
,	O
including	O
FM	B-Application
,	O
D-STAR	B-Protocol
,	O
DMR	O
,	O
and	O
ATV	O
.	O
</s>
<s>
Repeaters	O
are	O
listed	O
in	O
the	O
directory	O
along	O
with	O
its	O
call	O
sign	O
,	O
Maidenhead	O
Locator	O
System	O
and	O
GPS	O
coordinates	O
,	O
transmit/receive	O
offset	O
(	O
"	O
split	O
"	O
)	O
,	O
CTCSS	O
and	O
DCS	O
squelch	O
settings	O
,	O
and	O
VoIP	B-Application
settings	O
(	O
IRLP	O
and	O
Echolink	B-Protocol
nodes	O
)	O
.	O
</s>
<s>
The	O
directory	O
is	O
available	O
via	O
the	O
RFinder	B-Application
website	O
,	O
with	O
several	O
custom	O
search	O
options	O
.	O
</s>
<s>
RFinder	B-Application
user	O
forums	O
is	O
for	O
help	O
and	O
support	O
for	O
the	O
app	O
and	O
hardware	O
.	O
</s>
<s>
RFinder	B-Application
has	O
mobile	B-Application
apps	I-Application
for	O
Android	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
When	O
using	O
the	O
mobile	B-Application
app	I-Application
,	O
RFinder	B-Application
can	O
display	O
the	O
distance	O
to	O
repeaters	O
,	O
based	O
on	O
the	O
mobile	O
device	O
's	O
current	B-Application
location	I-Application
.	O
</s>
<s>
The	O
ARRL	O
publishes	O
the	O
ARRL	O
Repeater	O
Directory	O
which	O
contains	O
over	O
31,000	O
repeater	O
listings	O
for	O
the	O
US	O
and	O
Canada	O
with	O
listings	O
provided	O
by	O
RFinder	B-Application
.	O
</s>
<s>
RFinder	B-Application
requires	O
a	O
subscription	O
.	O
</s>
<s>
Some	O
radio	O
programming	O
software	O
applications	O
can	O
query	O
RFinder	B-Application
and	O
download	O
repeater	O
listing	O
to	O
program	O
radios	O
.	O
</s>
<s>
RFinder	B-Application
is	O
the	O
official	O
repeater	O
directory	O
of	O
the	O
following	O
associations	O
:	O
</s>
