User's Manual

48!
VISIT!BAOFENGTECH.COM!AND!MIKLOR.COM!FOR!DOWNLOADS!AND!HELP!
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UV-25X2!/!UV-25X4!/!UV-50X2!
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Chapter!6.!-!Selective!calling!
Some!times!when!you're!working!with!larger!groups!of!people!using!the!same!channel,!things!can!
get!very!crowded,!very!fast.!To!minimize!this!problem,!several!methods!of!blocking!out!unwanted!
transmissions!on!your!frequency!have!developed.!In!general,!there!are!two!forms!of!selective!calling!
in!two-way!radio!systems:!Group!calling,!and!individual!calling.!
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Group!calling,!as!the!name!suggest,!is!a!one-to-many!form!of!communication.!Every!radio!in!your!
working!group!is!configured!the!same!way!and!any!radio!will!make!contact!with!every!other!radio!in!
the!group.!
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Individual!calling,!some!times!also!known!as!paging,!is!a!one-to-one!form!of!communication.!Every!
radio!is!programmed!with!a!unique!ID!code.!And!only!by!sending!out!a!matching!code!can!you!get!
that!radio!to!open!up!to!your!transmissions.!
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The!BTECH!X-SERIES!MOBILES!features!three!additional!ways!of!group!calling!!
(2TONE,!5TONE,!AND!DTMF!CALLING!ARE!FOUND!IN!CHAPTER!5):!
• CTCSS!
• DCS!
• Tone-burst!(1000Hz,!1450Hz,!1750Hz,!2100Hz)!
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