User's Manual

18!
VISIT!BAOFENGTECH.COM!AND!MIKLOR.COM!FOR!DOWNLOADS!AND!HELP!
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UV-25X2!/!UV-25X4!/!UV-50X2!
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NMO or PL-259 Base Antennas:
These!antennas!will!normally!require!a!base!or!mobile!hardware!kit.!These!kits!are!grounded!either!
through:!drill!or!clamp!inserts!on!vehicles,!magnetically!mounted,!or!available!as!stationary!base!
hardware!kits.!Some!antennas!may!include!a!base!station!grounding!plane!kit.!!
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Antenna!Requirements!
Antenna!SWR!Rating:!1.5:1!or!less!(on!the!radio!frequencies!in!use.)!
Antenna!Impedance:!50!ohm!(use!50!ohm!rated!coax!and!coax!connectors)!
Antenna!Grounding:!Ensure!the!antenna!is!mounted!with!a!grounding!plane!
Visually!Inspect!Coax/Connectors!for!any!Slits!or!Damage!–!moisture!should!not!be!allowed!to!
penetrate!fittings!or!your!coax!!
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To!maximize!the!life!of!your!radio,!it!is!important!to!understand!antenna!basics!before!transmitting!
on!your!radio,!transmitting!without!an!antenna,!or!with!high!SWR!(Standing!Wave!Ration)!–!can!
void!warranty!support.!
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An!Active!SWR!Meter!is!a!great!tool!to!have!when!selecting!an!antenna!for!your!needs.!You!can!
monitor!and!confirm!that!your!SWR!is!within!safe!levels!when!setting!up!your!radio!for!the!first!
time!(periodically!checking!SWR!and!your!antenna!set-up!is!advised)!!
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