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BCD Receiver without Coils - The radio consists of two phase-shifting transistor stages (T1 and T2) and a RF amplifier (T3). The gain of T1 is almost one (R4/R5). Phase shift of this stage is 90 degrees at a frequency determined by P2 and C4. The second stage (T2) is identical to the first; the frequency of 90 degrees phase shift (electroninc design) __
BH1415F FM Stereo PLL Transmitter - Transmitter power amplifier, the output signal from BH1415F by 2 SC9018, 2SC3355, 2SC2053 amplified signal can reach more than 500 mW, adjusting well to achieve greater power. Measured by the pull rod antenna used to be launched in the open 800 meters above. Uses external antenna will be launched even further. attention in 2053 need to be installed and tested at the load connected to leave, or else very easily burn 2053, 50 European amateur production of 2 W can be used instead of resistance. Installed and tested at three levels circuit can be installed and tested. __
BH1417 PLL Stereo Transmitter - This is the latest BH1417 FM Transmitter design from RHOM that includes a lot of features in one small package. It comes with pre-emphasis, limiter, stereo encoder, low pass filter, PLL rock solid frequency transmission and RF output buffer. __
BH1417 Stereo PLL FM Transmitter - The new FM Stereo Micromitter is now crystal-locked which means that the unit does not drift off frequency over time. In addition, the distortion, stereo separation, signal-to-noise ratio and stereo locking are much improved on this new unit compared to the earlier designs. The specifications panel has further details___ SiliconChip
BH1417 USB FM Transmitter - Here's BH1417 USB FM Transmitter with built-in PLL circuit. Its low-frequency signal is converted into high-frequency, which can take any audio device with FM radio (stereo, car CD, MP3, DVD player, etc.), as a normal radio station. Transmitter power is sufficient for reliable reception of its signal within a few tens of meters. The basis of the device is a chip BH1417F, included in a typical scheme. This device contains all the necessary circuitry to generate a composite stereo signal c of the pilot tone, the RF generator with PLL and power amplifier. A detailed description is given in. __
Build a Crystal Set (Simple Circuit AM radio receiver) - Building a crystal set may lead you to a lifetime of electronics addiction. I have heard so many tails that there is no doubt that a crystal set is the gateway drug to electronics. In these modern times it's not easy to find parts. Some of you may be afraid of winding coils (it took me many years to get over helixaphobia. However my investigations have led me to the inescapable conclusion that winding coils is the best way. __ Designed by Max Robinson
Build a Simple Circuit AM Radio - This simple AM radio can built in two forms. One is shirt pocket size, not much larger than an Android phone, which drives headphones or ear-buds. The other is a retro-style mantel radio with a hand-span dial and a 100mm (4-inch) loudspeaker in a basic timber cabinet.___ SiliconChip
Build a Simple Circuit crystal set - amateur radio construction projects. __ Designed by Peter Parker
Build the "Aussie-3" Valve AM Radio - So you thought valve technology was dead! Well it is - but we have exhumed enough of it to produce a 3-valve radio which has quite a respectable performance. It is a superheterodyne circuit, based entirely on readily available components. It is suitable for moderately-experienced constructors - even those who've never touched a valve in their lives!___ SiliconChip
Build Your Own Micro FM Transmitter - A fun Make project. __ Contact Jameco Electronics
Cardboard AM Radio Resonant Loop Passive Booster Antenna - An excellent use for copper wire, a trimmer capacitor and some lovely cardboard. __ Designed by Henry last name not given
CB Transmitter - For the regulation it needs a voltmeter (with needle better) and charge 50W/5W. Connect charge 50W in the place of aerial, with the voltmeter in the exit voltmeter. Be supplied the transmitter with + 12V. It will be supposed we have consumption between 0, 7-1A. With a screwdriver we regulate the core of inductor L1/L2 and later the variable C6 until we see the biggest tendency. We connect the microphone and speaking we observe the clue in the multimeter. If all have become right will be supposed the tendency, speaking, to go up roughly 30-35%. __
Cheap Crystal filter - Ladder filter using six 4.43MHz Crystals. Building cheap side band filter for your bome brew SSB Rig __
Coil-less FM Transmitter by IC 40107 - The RF oscillator using the inverter U1B and 10.7Mhz ceramic filter is driving the parallel combination of U1D to U1F through U1C. Since these inverters are in parallel the output impedance will be low so that it can directly drive an aerial of __
Crystal AM Transmitter - Here is the circuit of a medium-power AM transmitter that delivers 100-150 mW of radio frequency (RF) power.At the heart of the circuit is a crystal oscillator. A 10MHz crystal is___ Electronics Projects for You
Designing an AM Receiver for Low Power Wireless Systems using the NEC UPC2768GR IC 7/22/96 - App Note Doc #921___ California Eastern Laboratories
DTMF Radio Remote Control - Here is a circuit of a remote control unit which makes use of the radio frequency signals to control various electrical appliances. This remote control unit has 4 channels which can be easily extended to 12. This circuit differs from similar circuits in view of its simplicity and a totally different concept of generating the control signals __ Designed by Radioland.net
Easy FM Keyer - Many no code Technician class amateurs who are struggling to learn 5 WPM code simply do not have any avenue to get the necessary on the air practice. Figure 1 is a simple circuit which will generate a 700 Hz tone into any FM transceiver allowing an amateur to practice CW with another amateur on a 2 meter simplex frequency __ Designed by Radio Amateur Society of Norwich
Easy FM transmitter 0,4 W - Schematic + Parts List + PCB __ Jan Kolar |
