HLLY Electronics VILLA 0.5W User manual

HLLYELECTRONICS(Hongkong)CO., LTD
TheUsermanualoftheVILLA0.5WFMTransmitter
ThankyouforselectingVILLA0.5WFMRADIOSTATION BROADCAST
TRANSMITTER.
HLLY-VILLA0.5WISFMASTEREOTRANSMITTERwhichapplyPLL
technology soit stransmissionisverystable.
HLLY-VILLA0.5WmainboardadoptthePLLFMTransmitterICofROHM
(BH1415F) BH1415FbuildinPLL、AudioaggravationandLowPass filter,Thecontrol
boardismadeofAT89C205 andAT24C02,theHFamplifierismadeof22SC3355、1
2SC2053 and12SC1971,addupto4gradecircuit。TheboardadoptHFtwolayerPCB
design andtheshellismadeofwonderfulaluminum thewholelittlemachineisvery
beautifulandeasytouse!
HLLY-VILLA0.5WisdesignforamateurRadiofancierandnotaprofessional
transmitter!
FTechnicalCriteria
1. POWER ：DC9-->15V(RECOMMEND 12V)
2. WORKCURRENT：<1.3A
3. PresetFREQUENCYRANGE：88—108MHz(CenterFrequency:97Mhz)
4. FREQUENCYSTEPPING：0.1MHz
5. FREQUENCYSTABLING METHOD：PLL
6. MeasureofFREQUENCYStability：LOWERThan1KHz
7. MODULATION Mode：FMSTEREO
8. FrequencyExcursion：75KHz
9. HFOutputPower：VILLA0.5W
10. AntennaImpedance：50Ω
11. Referencetransmitrange：500 meters
12. S/N(stereo)：>40db
13. StereoResolution：-55dB(100 ~5000Hz)；-45dB(5000Hz~15000Hz)
14. FrequencyResponse：40KHz~15 KHz±0.2dB(立)
15. Degree ofDistortion：<0.3%
16. ModulationDegree ：15%
17. InputLevel：-15dBV
18. MachineWeight：420g
MachineSize：115mm*75mm*25mm
1MethodofApplication
1. Linkthe50 Coaxcabletothe “ANT”--(BNCType） Besurethelink isstable；
2. Linktheaudioinputtothe “Audio”--3.5MM Stereosocket；
3. LinktheDCPOWERmoduletothe “POWER”--6.5mm POWERsocket(DC
12V(current>2A)PayAttentiontothepowerpolar ：insidepositive;outsidenegative）。
4. Afterelectrified,thefrequencyistheoneoflastpoweroff。
5. FrequencyIncreaseControl ：pullthebutton“UP” everypullcanincrease100KHz
pullthebuttonformorethan1second thesteppingjumpto1MHz.

HLLYELECTRONICS(Hongkong)CO., LTD
6. FrequencyDecreaseControl：pull thebutton“DOWN” everypull candecrease100KHz
pullthebuttonformorethan1second thesteppingjumpto1MHz.
SUsingEssential：
1. Pleaseselecthighqualitypowermodulelikeswitching powersupply。
2. Thevoltageofpowermodulemustnothigherthan15V.
3. Pleasedo notalterthefrequencywhenthetransmitterisworkingbecauseitmaydisturb
thewireless communication.
4. Thedistancebetweenthetransmitterandantennashouldbemorethan5meterbecause
antennamaydisturbthetransmitter。
5. RecommendusingGPantennaorJtypeantenna,MakesuretheSWR(standing-wave
ratio)oftheantennalowerthan2,otherwisethetransmittermaybedamagedbecauseof
thesuperheatingofpowertube,attentionthefrequencyoftheantennashouldmatchthe
frequencythetransmitter,Donotusesimpleantenna,otherwisethetransmittermayalso
bedamagedbecauseofthesuperheatingofpowertube!
0Simple Failure & ResolveMethod
FailurePhenomenon Reason ResolveMethod
ShortTransmit Distance 1 Antennalinkfailure Checkthelinkofantenna
ShortTransmit Distance 2 Frequencyistoolowortoohigh Resetthefrequency
ShortTransmit Distance 3 Thepowerfailureorlowcurrent Checkpowermodule
Frequencydisplayfailure BeenstronglyDisturbed Poweroff thetransmitterand
poweronafter5 second
AudioDistortion Badaudioinputortoohighaudio
input
Checktheaudioinputorturn
downtheaudioinput
OTransmittercoveringDistance（Reference:kilometer）
Receive sensitivity
0.2uV/12dB
Transmit
power
0.1～0.5W
Transmit
power
1～2W
Transmit
power
3～0.5W
Transmit
power
10～30W
Transmit
power
30～50W
City 0.1～0.5 0.5～1 1～2 3～5 5～8
Town 0.2～0.6 1～2 2～3 5～8 8～10
Environs 0.3～1 2～3 3～5 8～15 10～30
WidenPlain 0.5～2 3～5 8～20 10～30 20～40
Seacommunication
1～3 5～15 10～30 20～40 20～50
★Onlyforreference,alsothecoveringdistanceisconcernwiththeantennaandenvironment。

HLLYELECTRONICS(Hongkong)CO., LTD
LCD Frequency down
Mute
TransmitterFrontPanel
Linein Micin RFOutput
Power
PowerSwitch
Frequency Memory
Stereo/mono Switch
Frequencyup
TransmitterRightPanel TransmitterLeftPanel
RFOutput
PowerInput
PowerSwitch RFAmp
BH1415
AudioAGC
MCN
LCD
Micin
Linein
TransmitterInsideStructure

HLLYELECTRONICS(Hongkong)CO., LTD
MainPolar
Groundnet
GPAntennaSketchMap