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vhf fm transmitter
ICs that in the past were far too expensive for the hobbyist tend to be more favourably priced these days. An example of this is the AD8099 from Analog Devices. This opamp is available for only a few pounds. The AD8099 is a very fast opamp (1600 V/ms) and has high-impedance inputs with low input capacitance. The bandwidth of the opamp is so large
vhf rf preamp 100 175 mhz with max2633
This is the diagram of VHF RF Preamp circuit 100-175 MHz with single chip MAX2633. The circuit can be used for the entire VHF broadcast and PMR band (100-175 MHz) which can be easily construct without any special test equipment. The grounded-gate configuration is inherently stable without any neutralization if appropriate PCB layout techniques are
30 watt VHF amplifier circuit
vhf antenna amplifier
The pcb of this circuit must be placed near the antenna, in a small metallic box. This VHF antenna circuit must be powered from a 12 volts DC power supply circuit, you can use a 12 volt battery, because the current consumption of this circuit is very low under 10mA.
vhf video transmitter circuit
This is a simple design circuit for transmitter video. This circuit can radiate as far as 50m. This video transmitter can be used with the camera as a source. You can view them on VHF channel analog TV. Supply voltage to the transmitter can use 9V battery. This is the figure of the circuit. Transistor components that are used for a video transmitt
vhf ampand transmiter schematic
Another version of the 1W VHF amplifier for the FM transceiver, well, in fact, it`s still the same version since I didn`t managed to get 1W. YET! Today I made some tests with a 2n2553 and a 2n2866. it melted solder in one of the base resistors (never I had seen such a thing, normaly resistors burn), a 27 Ohm one, made with 3 different resistor....
preamp HF VHF UHF SHF wideband MAR6
The MAR6 (MSA-0686, 0685, 0885) is a high performance silicon bipolar Monolithic Microwave Integrated Circuit (MMIC) housed in a low cost, surface mount plastic package. This MMIC is designed for use as a general purpose 50 W gain block. Applications include narrow and broad band IF and RF amplifiers in commercial and industrial applications....
30w vhf fm broadcast amplifier
The 30 watt amplifier circuit shown below provides an appropriate power boost with an input of 4 watt up to 6 watts. The circuit is designed to cover 88-108MHz FM Broadcast Band. However, the circuit is very stable at my place and provides a clean-output through seven (7) element Butter-worth low-pass filter. The heart of the circuit is 2SC1946A V
tv tuner reciver uhf vhf vl if out
hf vhf uhf tv antenna boster active
VHF field strength meter
This is a simple and low cost wide band VHF field strength meter. The field strength is measured by converting the radio signal to DC and measuring it. The RF signal will be picked up by the coil and rectified by the diode D1. Even a very small DC voltage is sufficient to alter the biasing of FET and it will be reflected in the meter as an indicati
VHF/UHF Mixer Local Oscillator
FM Tuner VHF Band Amplifier
2SK543 FM Tuner VHF Band Amplifier
MC44BS373CA MC44BS373CA: PLL Tuned UHF And VHF Audio/Video High Integration Modulator
MC44BS374CA: PLL Tuned UHF and VHF Audio Video High Integration Modulator MC44BS374CA The MC44BS374CA Audio and Video Modulator is for use in VCRs, set-top boxes, and similar devices. By Freescale Semiconductor, Inc
MC44BS374CA MC44BS374CA: PLL Tuned UHF And VHF Audio/Video High Integration Modulator
RF2516 VHF/UHF TRANSMITTER
This application note describes a low cost, high performance UHF short-range Radio ASK receiver design using the Microchip Technology rfRXD0420. The reference design is suitable for: Wireless remote command and control Remote Keyless Entry (RKE) Security systems Low power telemetry applications The specifics of this receiver reference design a
TA1284FN UHF / VHF TUNER IC (Low Phase Noise Oscillator)
TA1317ANG is a deflection processor IC for a large and wide picture tube. TA1317ANG incorporates an EW, a vertical distortion correction circuit and a dynamic focus correction circuit. It CAN 2 control various functions via I C BUS line. By Toshiba Semiconductor
TRF1400 RF TELEMETRY RECEIVERS VHF/UHF RZ ASK REMOTE CONTROL RECEIVER
20dB VHF Amplifiers
The preamplifier offers 20dB in all the region of VHF and it still can reach also their 500MHZ. The amplifier is a circuit of high frequency RF with distinguishable materials. The amplifier as circuit strengthens the tendency of signal with concrete aid, depending on the frequency of signal. If the frequency of signal is included in the limits...
500 mW VHF Video Transmitter
Tuned circuits consist of C4, L1, C8, L3, and the two 15 pF trimmer capacitors across the collectors and emitters of both transistors. Other NPN transistors like BC54, 2N3642, 43, etc should also work. The circuit is designed for simplicity, so No Audio has been included as this would involve adding at least an RF coupling transformer. The...
RF Preamplifier Operating in Band 2 VHF Range
The circuit design employs a VHF amplifier adjusted in such a way that it will operate in the frequency range of 88 to 108 MHz, as part of the Band 2 Radi..
VHF Amplifier with 30 Watts Power
The circuit was designed for the purpose of increasing an input signal of 4 Watts to 6 Watts operating on the VHF radio frequency band specifically the FM..
Voice Transmitter Via FM Band 2 VHF by Hartley Oscillator
The circuit was designed to operate a frequency modulation voice transmitter over the FM band 2 frequency range of VHF. Transmitter an electronic device..
BFY90 VHF VCO
How to install CCD camera sensor with VHF sender
The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily through the video in terminals. and connects to the video signal modulated to To send a broadcast RF signal is explicit is better. This project can be adapted to many applications such as installed in
VHF antenna amplifier circuit diagram
This RF antenna amplifier can be used for high frequency and VHF band ( for radio and TV) and will provide a 22 dB gain. This RF antenna amplifier electronic project has a very low noise, under 1. 6dB. L1 coil has a 6uH value, but can be used any coil for high frequency ( with a value between 5. 6 to 6. 8 u H). L2 coil is an air core type coil a
VHF to AM Converter Circuit
There are many people who want to listen whats going on in VHF 108 - 132 MHz. This vhf am converter converts a band between 106 and 150 MHz, so you can lis..
MAX2606 VHF FM Transmitter
To be independent of the local radio stations for testing VHF receivers, you need a frequency-modulated oscillator that covers the range of 89. 5 to 108 MHz ” but building such an oscillator using discrete components is not that easy. Maxim now has available a series of five integrated oscillator building blocks in the MAX260x serieswhich cover...
VHF FM Antenna Booster Circuit
Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to capture far removed (DX) stations. Alternatively, it will drastically improve reception of FM signals you`ve come to accept as marginal and noisy in your area. Together with a good directional antenna this hig
FM Radio Receiver Antenna Booster Circuit
This inexpensive FM radio receiver antenna booster uses the BF324 TO92 style pnp transistor in a grounded-base configuration. The circuit may be used as a..
Radio Receiver Antenna Amplifier
Here is a high performance radio receiver antenna amplifier for the entire VHF broadcast and PMR band (100-175 MHz) which can be successfully built without..
FM Radio Circuits
RF Transmitter Circuits
RF Receiver Circuits
RF Amplifier Circuits
AM Radio Circuits
FM Transmitter Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
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