Vertex Standard VXR-7000 Especificaciones descargar pdf (Pagina 9)

 



Repeateroperationwithoutaduplexerrequiresthat

twoantennasbeinstalled,oneforreceivingandone

fortransmiing,so thatthe receivingantennadoes

not absorb energy from the transmitting antenna.

There are anumber ofways to dothis, depending

ontheTX/RXfrequencyseparation,andontheloca-

tionsavailableforantennamounting.Ifaduplexeris

used,asingleantennasucesforbothtransmiing

and receiving. If using a reduced-size duplexer,a

six-cavity model (minimum) is recommended. Ver-

tex Standard recommends theuse ofthe duplexer.

For further details, contact your Vertex Standard

dealer.

Regardless ofthe above choice, it is of paramount

importancethat theantenna(s) bemounted ashigh

and inthe clear aspossible, preferably within line-

of-sighttoallrepeaterusers.Furthermore,lossesin

thefeedline(s)mustbeminimized,sothefeedline(s)

should be high quality, and as short aspossible. If

along feedline is necessary, use coaxial  hardline

cabletoreducelosses.

Repeaterantennasshouldhaveanimpedanceof50

Ω

attheoperatingfrequency.Whenseparatereceive

andtransmitantennasareused,high-Qnarrow-

bandtypesmayservetominimizeinteraction.How-

ever,whenasingleantennaisusedwithaduplexer,

itshouldbealow-Qwide-bandtype.

  

 







Foruninterruptedoperationduringpowerfailures,a

12voltrechargeabletypebaery(55-Ahormorerec-

ommended)maybeconnectedtothe

BATT

terminal

postson therear panel.While the repeateris oper-

atingfromtheACsource,a slightchargingcurrent

willmaintainbaerycharge.IntheeventofanAC

power outage, the automatic power control circuit

willautomaticallyswitchtherepeatertothebackup

baery,andoperationwillnotbeinterrupted.

Aerprolongedoperationfromthebaery,itshould

be disconnected from the repeater and recharged

separatelybeforere-connecting,asthetricklecharge

is not sufficientfor recharging acompletely dis-

chargedbaery.







WhileoperatingfromabaeryorDCsupply,there-

peaterrequiresapproximately7amperesat12Volts

duringtransmit.



While the operatingtemperature range of the re-

peater isquite broad, thebestlocationisone in

whichtheairtemperaturedoesnotapproachtheex-

tremesofthespeciedrange,andonethatdoesnot

changerapidly.Makesuretoallowforfreeairow

aroundtheheatsinkontherearapronatalltimes.In

warmclimates,therepeatershouldnotbesealedin

asmallclosedroom.







Protect the repeaterfromwindand rain,and ex-

tremesintemperatureorhumiditythatmayshorten

theusefullifeoftheequipment.Trytolocatethere-

peaterinanenvironmentthatisalsocomfortablefor

servicepersonnel,ifpossible.

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Vertex Standard VXR-7000 Especificaciones Pagina 9

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