Wireless Transmitter
A basic circuit of the transistor UHF radio transmitter with surface acoustic wave resonator (SAW), and the SAW is used as a positive feedback element connected...
Wireless Transmitter
A basic circuit of the transistor UHF radio transmitter with surface acoustic wave resonator (SAW), and the SAW is used as a positive feedback element connected...
TRANSISTORIZED AM RADIO
Shown is a schematic of a typical transistor AM radio. This circuit uses npn transistors. The circuit is generic; therefore, no specific values are given for so...
TRANSISTORIZED AM RADIO
Shown is a schematic of a typical transistor AM radio. This circuit uses npn transistors. The circuit is generic; therefore, no specific values are given for so...
SUPER SIMPLE SHORTWAVE RECEIVER
Integrated circuit U1 (an NE602 double-balanced mixer) is a combination oscillator and frequency mixer. Signals from the antenna input (at J1) are fed through d...
SUPER SIMPLE SHORTWAVE RECEIVER
Integrated circuit U1 (an NE602 double-balanced mixer) is a combination oscillator and frequency mixer. Signals from the antenna input (at J1) are fed through d...
Simple FM Transmitter
Simple FM transmitter with a single transistor. Mini FM transmitters take place as one of the standard circuit types in an amateur electronics fan`s beginning s...
Simple FM Transmitter
Simple FM transmitter with a single transistor. Mini FM transmitters take place as one of the standard circuit types in an amateur electronics fan`s beginning s...
SHORTWAVE RECEIVER
This receiver covers 8.5 to 11.5 MHz in two bands and has a sensitivity of under 1 ?V. Nn NE602 mixer feeds a 455-kHz IF amplifier (Q1 and Q2), detector D4, and...
SHORTWAVE RECEIVER
This receiver covers 8.5 to 11.5 MHz in two bands and has a sensitivity of under 1 ?V. Nn NE602 mixer feeds a 455-kHz IF amplifier (Q1 and Q2), detector D4, and...
RF MODULATOR
Two IC rf modulators convert a suitable baseband video and audio signal up to a low VHF modulated carrier-Channel 2 through 6 in the U.S., and 1 through 3 in Ja...
RF MODULATOR
Two IC rf modulators convert a suitable baseband video and audio signal up to a low VHF modulated carrier-Channel 2 through 6 in the U.S., and 1 through 3 in Ja...
QRP CW TRANSCEIVER
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 me`ers, featuring a direct-conversion receiver with audio filtering, Receiver In...
QRP CW TRANSCEIVER
This is a 3-W, single-circuit board, VFO-controlled CW transceiver for 40 or 30 me`ers, featuring a direct-conversion receiver with audio filtering, Receiver In...
FM / FSK 27MHz transmitter circuit
ETl3X220 is a low-cost single-chip transmitter chip which is connected through RF. It can provide 10 communications. And it is suitable for applications of wire...
FM / FSK 27MHz transmitter circuit
ETl3X220 is a low-cost single-chip transmitter chip which is connected through RF. It can provide 10 communications. And it is suitable for applications of wire...
A ONE TRANSISTOR FM TRANSMITTER
The 2N2222 circuitry is a three-element, phase-shift oscillator circuit, designed to yield a 1,000-Hz sine wave. The 1,000-Hz sine wave is then applied to the T...
A ONE TRANSISTOR FM TRANSMITTER
The 2N2222 circuitry is a three-element, phase-shift oscillator circuit, designed to yield a 1,000-Hz sine wave. The 1,000-Hz sine wave is then applied to the T...
ATV JR TRANSMITTER 440 MHz
This low-power video transmitter is useful for R/C applications, surveillance, or amateur radio applications. Seven transistors are used in a crystal oscillator...
ATV JR TRANSMITTER 440 MHz
This low-power video transmitter is useful for R/C applications, surveillance, or amateur radio applications. Seven transistors are used in a crystal oscillator...