AMC T7A User Manual

1.ACLINECORD
2.FMANTENNATERMINAL
PlugtheAClinecordintoanearbywall
outletthatprovidesthecorrectACpower
linevoltage,orintoanunswitched
convenienceoutletonanyAMCproduct.
Anantennamustbeconnectedtothetuner
foreffectivereceiptofstereoFM
broadcasts.Aribbon-wire"foldeddipole"
antennaisincludedtogetyoustarted.
Whenyoustretchouttheribbon-wire
antennayouwillnotethatitistheformofa
T.The"crossbar"portionoftheTshould
bestretchedouthorizontallyandtackedin
placeonawall,onthebackofacabinet,or
onthefloor.The"vertical"sectionoftheT
goestothe75ohmFMantennaterminal
through300ohmto75ohmmatching
transformerincludedinaccessory
package.
Inviewoftheexceptionalsensitivityof
AMCtunercircuits,youmayfindthe
ribbon-wiredipoleantennaisallyouneed
forreceiptofstronglocalstations.Butitis
notveryefficientatrejecting"multipath"
andotherformsofFMinterference,andit
cannotbeeasilyrotatedtooptimizeits
pickuppatternforbestreceptionofstations
indifferentdirections.Therecommended
options,inorderofincreasingcost,areas
follows:
(1)Abasic"rabbit-ears"indoorTVantenna
withoutauxiliarycoilsortuningswitches.
Electrically,suchanantennaisjustanother
dipole(similartotheribbon-wireantenna)
withitstunedelementsmadeofsolid
metal,butwiththeadvantageofbeingable
toberotated.Stretchouteachofitstwo
armstoalengthof30inches(75cm),and
orientthemhorizontallyoratashallow
anglelessthan45degreesupward.The
ribbonwireemergingfromtheantenna's
baseshouldbeconnectedtothetuner's75
ohmFMantennaterminalthrough300ohm
75ohmmatchingtransformerinplaceof
thesuppliedribbon-wireantenna.Now,for
eachstationintune,afteryoutunethe
stationyoucanrotatetheantennaforbest
reception.
(2)Amoreelaboraterabbit-earsindoorTV
antennawithatuningswitch.Thistypeof
antennadoesNOThavegreatersensitivity
thanthesimplerrabbit-earsunit,soifyour
problemisthatthesignalsyouwantto
receiveareweak,thenanoutdoorantenna
istheonlyeffectivesolution.Butincities
andinlargebuildingswheresignalsare
strongbutarecontaminatedbyreflected
"multipath"signalsthatinterferewithgood
reception,thetuningswitchonan
elaborateindoorantennamayimprove
receptionbyreducingtheinterference.
(3)Anelectricallytunedindoorantenna.
Again,suchantennasusuallydonot
provideanyadvantageoverthesimplest
typeof"rabbit-ears"unitforreceivingweak
signals.Butwherestrongsignalsare
contaminatedwithinterference,the
antenna'saimingandtuningcontrolscan
rejecttheinterferenceandyieldcleaner
reception.
(4)Anoutdoorantenna.Eventhefinest
indoorantenna,nomatterhowelaborate,
cannotfullyexploitthecapabilitiesofa
goodFMtuner.Forthelowestnoise,
minimumdistortion,andlargestchoiceof
wellreceivedbroadcasts,anoutdoor
antennaisthebestcomplementtoafine
tuner.Aroofmountedantennahasthree
fundamentaladvantages.First,itslarge
sizeyieldsbettersensitivity(pullingina
strongersignalformthedesiredstation)
andanarrowerdirectionalpatternformore
effectiverejectionofmultipathreflections
arrivingformotherdirections.Second,its
locationonaroofortallmastplacesit
abovemanysourcesofinterferencesuch
aspassingcarsandbuses,otherbuildings,
etc.Third,thestrengthofreceivedFM
signalsisdirectlyproportionaltotheheight
ofanyantennaabovetheground.Ifyou
alreadyhaveanoutdoor television
antenna,usingasplittertoextractFM
signalsfromitmayproduceexcellent
results.However,manyTVantennasare
REARPANELCONNECTIONS
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AMC T7A Specifications

General

Brand	AMC
Model	T7A
Category	Tuner
Language	English