BTECH UV-25X2 - Antenna Basics and Requirements; Grounding Plane Importance; Magnetically Mounted Antennas

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Antenna Basics
Your!Mobile!Radio!Kit!does!not!include!an!Antenna.!It!is!VERY!Important!to!NOT!transmit!without!a!
antenna!or!dummy!load!attached!to!the!mobile!radio.!Doing!so,!will!cause!harm!to!the!internal!
components!of!your!radio.!
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You!will!want!to!choose!a!suitable!antenna!for!the!bands!you!plan!on!transmitting!and!receiving!on.!
If!you!p la n !o n !tr an s mitting !o n !1 45 MHz!y o u !will!wan t !to !e n su r e!you!have!picked!an!antenna!that!
states!it!is!capable!of!working!with!145MHz.!If!an!a n te n n a !is!n ot!pro p er ly!t u n e d !fo r!t h e!f re q u ency!
you!transmit!on!–!it!ca n !ca u se !d amage !with!the!reflected!pow e r!going!back!into !t h e!ra d io .!
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Pick!an!antenna!with!SWR!of!less!than!1.5:1!to!safely!tra nsm it.!!
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Grounding !Plane:!
Antennas!require!an!appropriate!grounding!plane!to!properly!work:!
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Magnetically Mounted Antennas:
These!antennas!must!be!grounded!to!a!metal!surface,!such!as!a!ve hicle!body.!Magnetic!base!
antennas!do!not!properly!operate!un less!th ey!a re!fully!m a gne tically!gro u nd ed !first.!
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