HLLY Electronics VILLA 0.5W User Manual

The User manual of the VILLA 0.5W FM Transmitter
Thank you for selecting VILLA 0.5W FM RADIO STATION BROADCAST
TRANSMITTER.
HLLY-VILLA 0.5W
technology，so it's transmission is very stable.
HLLY-VILLA 0.5W main board adopt the PLL FM Transmitter IC of ROHM
(BH1415F)，BH1415F build in PLL、Audio aggravation and Low Pass filter, The control
board is made of AT89C205 and AT24C02, the HF amplifier is made of 2 2SC3355、1
2SC2053 and 1 2SC1971,add up to 4 grade circuit。The board adopt HF two layer PCB
design，and the shell is made of wonderful aluminum，the whole little machine is very
beautiful and easy to use!
HLLY-VILLA 0.5W is design for amateur Radio fancier and not a professional
transmitter!
Technical Criteria
F
1. POWER ：DC 9-->15V(RECOMMEND 12V)
2. WORK CURRENT：<1.3A
3. Preset FREQUENCY RANGE：88—108MHz(Center Frequency:97Mhz)
4. FREQUENCY STEPPING：0.1MHz
5. FREQUENCY STABLING METHOD：PLL
6. Measure of FREQUENCY Stability：LOWER Than 1KHz
7. MODULATION Mode：FM STEREO
8. Frequency Excursion：75KHz
9. HF Output Power：VILLA 0.5W
10. Antenna Impedance：50Ω
11. Reference transmit range：500 meters
12. S/N (stereo)：>40db
13. Stereo Resolution ：-55dB ( 100 ~ 5000Hz)；-45 dB ( 5000Hz ~ 15000Hz)
14. Frequency Response：40KHz~ 15 KHz±0.2dB (立)
15. Degree of Distortion ：<0.3%
16. Modulation Degree ：15%
17. Input Level：-15dBV
18. Machine Weight：420g
Machine Size：115mm* 75mm*25mm
1 Method of Application
1. Link the 50 Coax cable to the "ANT"
2. Link the audio input to the "Audio"
3. Link the DC POWER module to the "POWER"--6.5mm POWER socket ( DC
12V(current >2A) Pay Attention to the power polar ：inside positive; outside negative） 。
4. After electrified,the frequency is the one of last power off。
5. Frequency Increase Control ：pull the button"UP" ，every pull can increase 100KHz，
pull the button for more than 1 second，the stepping jump to 1MHz.
HLLY ELECTRONICS (Hongkong) CO., LTD
IS FM A STEREO TRANSMITTER which apply PLL
：
--3.5MM Stereo socket；
--(BNC Type） ，Be sure the link is stable；