4W FM transmitter circuit diagram TECHNICAL CHARACTERISTICS: Stabilised tendency of catering: Vcc = 12 ~ 16V Materially: R1, R2 10KOhm R3 47Ohm C1, C2 1nF C3 4,7uF / 16V C4, C7, C8 0 ~ 45pF trimmer C5, C6 10pF C9 100nF L1 4 turns, 7mm diameter * L3 3 turns, 7mm diameter * L4 5 turns, 7mm diameter * L2 RFC (resistance 1MOhm with wrapped around her inductor of enough coils from fine isolated wire. Scratch of utmost inductor and you sTIck in utmost the resistance making thus a parallel Lr circuit.) T1, T2 2N2219 ANT Simple dipole l / 2. MIC IN Microphone dynamic or other type. (It can also connected to a cassette player unit) RegulaTIons: With the C4 we regulate the frequency. With their C7, C8 we adapt the resistance of aerial (practically to them we regulate so that it is heard our voice in the radio as long as you become cleaner). Notes: The T2 wants refrigerator.
The Description of GSM Antenna
This 900/1800 omni-directional GSM Antenna provides broad coverage. It is a coaxial sleeve design with an omni-directional pattern. This GSM Antenna was also designed to transmit on the 900mhz frequencies with a top end transmission not to exceed 25 watts.Works for the current Mobile Communication.
The Specification of GSM Antenna
Frequency Range(MHz): 900/1800MHz
VSWR <=2.0:1
Gain: 2-5 dbi
Antenna Length(mm): Customized
Connector: SMA Plug (Customized)
Housing: Black
Application
A replacement GSM Antenna for many access points and radios that are equipped with RP-SMA connectors such as mobile, wireless pay phone, fixed commercial phone, PCMCIA card, navigation device, vehicle wireless device.
The Advantage of GSM Antenna
1. Rich experience with proven technique
2. Reasonable price
3. Wider frequency
4. OEM/ODM available
5. Professional service
6. ISO:9002 certified
7. One year quality guarantee
8. Fast delivery time
9. Independent R&D
10.Strong production capacity
GSM Antenna GSM Antenna,Gsm Wifi Antenna,Magnetic Base GSM Antenna,Indoor Directional Antenna Shenzhen Yetnorson Technology Co., Ltd. , http://www.yetnorson.com
Frequency of emission: 88 ~ 108MHz
ConsumpTIon: 100 ~ 400mA
The resistors are 1 / 4W.
* The inductors is air from wire of coaxial 75W or other 1mm roughly.