Chapter!7.!-!Repeaters!
A!radio!repe ate r!is!an!automated!transc eive r!in!a!fixed !location .!Usually!mounted!high!up!on!hilltops!
or!on!tall!buildings,!but!sometimes!they!operate!within!buildings!for!internal!use.!A!repea ter!takes!
one!signal!and!relays!it,!usually!after!amplifying!it!by!orders!of!magnitude.!!
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Whether!you're!a!commercial!(business!or!government)!user!or!an!amateur!radio!operator,!chances!
are!you'll!be!dealing!with!a!repeate r!system !sooner!or!la te r.!To!fin d!out!what!settings!to!use!to!use!
your!loca l!repeater,!ask!your!em ployer!or!som eon e!at!your!local!amateur!radio!organization!for!
details.!
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A! comm on! typ e! of! repeate r! is! the! duplex!repeater.! In! a! duplex!repeater! system ,! the!repe ater!
transmits!and!receive s!sim ultaneo usly,!but!on!different!freque nc ies.!To!utilize!this!type ! of!
repeater,! your!radio!has!to ! be!capable!of!tran sm itting! and! receiving! on!different!frequenc ies!on!
the!same!memory!channel.!How!you!use!this!kind!of!repeater!is!by!setting!th e!receive!frequ en cy !of!
your!radio!to!the!output!freque ncy !of!the!repeater,!and!the!transmit!freque nc y!of!your!radio!to!the!
input!freq ue nc y!of!the!repeater.!Often!times,!the!transmit!frequency ! to! use!isn't!explicitly!stated ,!
but!rather!an!offset!relative!your!receive!frequency!is!specified.!This!is!conveniently!by!specifying!
offset!rather!than!trans m it!frequ en cy.!(E xa m p le!145 .00 0MHz!Rec eive !with !.600 M H z!tra nsmit!is!a!
transmit!Ch an ne l!of!145 .600 M H z)!
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