User's Manual

16!
VISIT!BAOFENGTECH.COM!AND!MIKLOR.COM!FOR!DOWNLOADS!AND!HELP!
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UV-2501!/!UV-5001!
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DTMF!signal!
This!radio!has!DTMF!coding/decode!function.!Use!PC!software!to!input!code!information!DTMF!
signal!setting!receive!DTMF!signal!first.!After!receiving! th e!sa m e!co de !as!yo ur!settin g,!radio!will!
show!the!code!by!display!and!ring.!Then!can!speak! during!effective!time.!(ID!code!setting!by!PC!
software)!
DTMF!
In!two-way!rad io!systems,!DTMF!is!most! co m mo nly!used!for !autom ation!systems!and!remote!
control.!A!common!example!would!be!in!amateur!radio!repe ate rs!where!som e!repeaters!are!
activated!by!sending!out!a!DTMF!sequ ence !(usu ally!a!simple!single-digit!sequence).!
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Table!7.1.!DTMF!frequencies!and!corresponding!codes!
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1209!Hz!
1336!Hz!
1477!Hz!
1633!Hz!
697!Hz!
1!
2!
3!
A!-! !
770!Hz!
4!
5!
6!
B!-! !
852!Hz!
7!
8!
9!
C!-! !
941!Hz!
*!
0!
#!
D!-! !
The!BTECH!UV-2501!/!UV-5001!have!a!fu ll!imp lementa tio n !of!DTMF,!includ in g !the!A,!B,!C!a nd!D!