Tag Archives: Fm
Making 15W FM RF Amplifier using 2SC253
This is a FM RF amplifier which build based on RF Power Transistor 2SC2539.
2SC2539 is a silicon NPN epitaxial planar type transistor designed for RF power amplifiers in VHF band mobile radio applications.
L1: 2T Coil diameter:4mm
L2: in series 6pcs Toroidal ring
L3: 4T Coil diameter:10mm
L1: 3T Coil diameter:10mm
Posted in Electronic Circuit Also tagged 15W, 15Wの、, 15W的功率，, 2SC2539, 2SC2539、, 2SC2539，, Amplificateur, Amplifier, Anwendungen, Applications, décisions, machen, making, mobile, Radio, RF, Verstärker, आरएफ, आवेदन पत्र, एफएम, एम्पलीफायर, निर्माण, मोबाइल, रेडियो, 、意思, アンプ、 アプリケーションでは、, デロンギ、, モバイル, ラジオ、, 决策，, 射频, 应用，, 收音机，, 放大器，, 移动，, 调频， Leave a comment
Circuit Diagram and Filter 1.3-5W Power RF Amplifier Trans FM
A amplifier of force RF for the FM , is always essential for the amateur that wants it strengthens some small [...]
Posted in Electronic Circuit Also tagged 15-20W, 50-60W, 5W, 88-108MHz, Amplifier, BLY90, Circuit, diagram, Filter, frequencies, power, RF Leave a comment
Making FM transmitter 0,4 W
Circuit electronics FM transmitter 0,4 W
12-14 V stab., 100 mA
RF : 400 mW
Impedance : 50-75 ohm
Frequency range : 87,5-108 MHz
Modulation : wideband FM
C1, C2, C12 – 100 pF (ceramic)
C3, C5 – 0,22 uF (electrolytic)
C4 – 1,8 nF (plastic)
C13, C16, C17, C19 – 1 nF (ceramic)
C8, C9 – 10 pF (ceramic)
C10 – 47 pF (ceramic)
C11 – [...]
Posted in Electronic Circuit Also tagged 0, 4 W, BB109G, BB409, BBY31, BC547B, BC547C, BC548C, BFR91A, BFR96, making, Transmitter, varicap Leave a comment
Circuit diagram FM OSCILLATOR WITH BLY87
Circuit diagram FM OSCILLATOR WITH BLY87
Component list of the FM Oscillator with the BF900
Resistors:
R1 : 47k, 1/8 W
R2 : 47k, 1/8 W
R3 : 47k, 1/8 W
R4 : 100E, 1/8 W
R5 : 220k, 1/8 W
R6 : 100k, 1/8 W
R7 : 150E, 1/8 W
R8 : 10k, lin. pot
Capacitors:
C1 : 100 nF Multilayer or ceramic
C2 [...]
Circuit diagram 500mW FM PLL transmitter 88-108MHz using LMX3206 – PIC16F870
500mW PLL FM transmitter 88-108MHz
This PLL transmitter is controlled and the frequency is very stable and can be programmed digitally.
Transmitter will work 88-108 MHz and output power up to 500mW.
With a small change can set the frequency of 50-150 MHz.
The output power is often set to several watts with transistors.
So therefore I decided to [...]
Posted in Electronic Circuit Also tagged 500mW, 88-108MHz, Circuit, diagram, LMX3206, PIC16F870, PLL, Transmitter, Using Leave a comment
FM Radio Receiver circuit diagram using TDA7021T