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RF (Radio
Frequency) Transmitter
Circuits, Page 1a
RF (Radio Frequency) Transmitter: #'s
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E - O
P - Z
Last Updated on:
Thursday, December 07, 2017 02:04 PM |
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| Circuits Designed
by Dave Johnson, P.E. : |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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3 Channel RF Remote Control - This is a 3 channel RF remote control
project.The transmitter powered by 3V battery(coin size) range about 10 m. This
remote control I use PIC12F509 from Microchip which is a 8-pin single-chip
microcontroller designed for low pin count applications with 1 K words flash
memory and 41Byte SRAM and some special features such Power-saving Sleep
mode,Wake-up from Sleep on pin change. ….(electronic schematic added 11/08)
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30 Meter QRP Transmitter for Morse Code - This transmitters' intended
purpose is for morse-code only in 30 meter band (Tony van Roon's 10Mhz).
It is a low-power QRP type and needs to be connected to your existing
tranceiver.... [Tony van Roon's circuit] |
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3W HF QRP Linear Amplifier - Electroinic design circuit…. [from Harry
Lythall's website] |
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4 Channel RF AVR Remote Control - How many times you needed some
remote control to handle some electric device ? many times. There are lot of
remote controls like infrared, RF, SMS (like my other circuit) and more.... |
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4 MHz Amplitude Modulated RF Source - A while back I needed an amplitude
modulated signal source at 4 MHz. This circuit was literally thrown together with
parts laying on the bench. I built it dead bug style on a piece of copper clad board. It
should work with little or no modification, other thano get it to oscillate, and at higher
frequencies, you might have to reduce the capacitor values a little. Just be....(schematic
/ circuit added 6/07) |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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4 Transistor Transmitter - This circuit provides an FM modulated signal with an
output power of around 500mW. The input Mic preamp is built around a couple of 2N3904
transistors, audio gain limited by the 5k preset. The oscillator is a colpitts stage,
frequency of oscillation governed by the tank circuit made from two 5pF capacitors and the
inductor.... [Design by Paul K Sherby] |
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49MHz Walkie Talkie - Lots of people are requesting walkie-talkie and RF remote
control schematics, so here is some. Building se circuits needs special equipment and
expertise in RF circuits. If you are going to experiment with se circuits, please note
that I did not build.... [Peter Jakab, Electrical Engineer, Engineer of Informatics] |
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49MHz Walkie Talkie Circuit - (circuit / schematic design added 03/10) [Peter
Jakab, Electrical Engineer, Engineer of Informatics] |
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4W FM Transmitter - Don't be fooled by relative simplicity of this
transmitter. With 4W of power, it's not a toy! Since it operates in FM band
(88-108MHz), a license is required for broadcasting. With a good and properly mounted
antenna this baby has a range of up to 50km. In mountainous terrain or in built-up areas,
this figure is smaller, of course. circuit is fairly small.…. (added 11/05)
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5 Watt 80 Meter QRP CW Transceiver - A great deal of interest has been generated
by my previous design articles, so I decided to go to work on a full blown transceiver
design. After several months of work, the ROSE-80 transceiver was born. This
transceiver is similar to other designs but contains some unique differences. This
design boasts the following features....)schematic added 8/03) |
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500mW HF Linear Amplifier - Electroinic circuit schematic…. [from Harry
Lythall's website] |
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60W Linear Amplifier - This is a RF Linear amplifier for QRO using power mosfet
IRF840 with power out 60 Watts. It's simple all solid state circuit. The IRF series of
power transistors….(circuit / schematic added 09/08) |
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8 Channel ADC for Radio-SkyPipe - This is a Radio Astronomy Project… [from
Radio-Sky Publishing's web site] |
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8 Channel RF Remote Control - This is an 8 Channel RF Remote Transmitter and
Receiver that will allow to remotely control various electronic projects. RF Remote
Control provides 2 latched and 6 momentary outputs that could be used to control your
favorite devices such as amplifier, robotic devices, RC cars, computer, home appliances,
lamps and many other cool gadgets. ….(electronic schematic added 11/08) |
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80 Meter DSB Transmitter - amateur radio construction projects…. [from Peter
Parker's website] |
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80 Meter, 5 Watt CW Transceiver - A great deal of interest has been generated by
my previous design articles, so I decided to go to work on a full blown transceiver
design. After several months of work, the ROSE-80 transceiver was born. This
transceiver is similar to other designs but contains some unique differences. This
design boasts the following features.... [Radio Amateur Society of Norwich] |
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80 Watt FM stereo transmitter - A high quality broadcast transmitter big enough
for a medium town! [Manfred Mornhinweg] |
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807 & 1625 Valves - data on vacuum tubes 807 and 1625 used in ham radio
transmitters. Describes various pin voltages and different operation modes. |
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RF (Radio Frequency) Transmitter:
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