Member Blog Posts: rf
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RF Transmitter Powered by Voice Signal
Posted Feb 09, 2012 By Circuit ProjectsThe project aims to create an interesting double-sideband (DSB) radiotelephone transmitter that is powered by the operator’s voice due to…
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Remote Control Projects Using IR and RF
Posted Feb 09, 2012 By Circuit ProjectsTwo communication links consisting of IR and RF are being used by this remote control which is subdivided into three parts as separate…
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Wave Bubble as Portable RF Jammer
Posted Feb 08, 2012 By Circuit ProjectsThe project illustrates the construction and design of a wave bubble that contains a wide bandwidth and self-tuning portable RF…
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RF Transmitter with 2 Channels
Posted Feb 08, 2012 By Circuit ProjectsThe transmitter project provides 2 channels for transmitting and receiving which operates on the 418MHz frequency.
The circuit utilizes a…
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Hubby Detector with Pulsing Feature
Posted Feb 07, 2012 By Circuit ProjectsA pulsing LED heart is being triggered on this project using an RF receiver module when the transmitter comes within the range.
Two…
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Controller in Minty Box for Water Valve
Posted Feb 07, 2012 By Circuit ProjectsThis water valve controller is based on an Arduino which has the capability of accepting remote RF commands while controlling the valve…
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RF Modem with 250mW Power
Posted Feb 07, 2012 By Circuit ProjectsThe project shows a homemade, cloth iron soldered, range extender for RF transceiver chip CC1101 that is included onboard.
In the design,…
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Field Strength Indicator Without Microcontroller
Posted Feb 07, 2012 By Circuit ProjectsThe project is a non-microcontroller version of RF Field Strength Probe using Atmel AVR microcontroller AT90S1200.
From the…
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Broadband VHF RF Power Amplifier with 40W Output
Posted Feb 06, 2012 By Circuit ProjectsBoosting the output power of low power FM broadcast band exciters is the goal of the project which was based on Motorola MRF171A…
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RF Preamplifier Operating in Band 2 VHF Range
Posted Feb 06, 2012 By Circuit ProjectsThe 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…
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Frequency Counter for RF/Microwave
Posted Feb 03, 2012 By Circuit ProjectsThe project aims to build a simple and easily-reproducible RF/Microwave frequency counter that is based around a PIC16F876A…
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Basic Concepts of Designing an RF PCB Board
Posted Jan 25, 2012 By Circuit ProjectsIn this article, we point out some important facts in designing RF application PCB boards. Of course there are many other facts that are not listed…
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Robotics Project Using RF Modem
Posted Jan 25, 2012 By Circuit ProjectsThe project utilizes two PIC16F84 microcontrollers to control a robot through a serial RF link using joystick interface.
The TX/RX pair…
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2-Meter HT Radios for BASIC Stamps RF Communication
Posted Jan 25, 2012 By Circuit ProjectsA set of 2-mter handheld radio transceivers along with Tigertronics RTX-12 Radio Modem were used in this project to provide a simple and…
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2.4 GHz RF Pinhole Camera Amplifiers
Posted Jan 25, 2012 By Circuit ProjectsHere are two simple Junk Box but extremely useful circuits. They are designed to amplify those flimsy 2.4 GHz Pinhole cameras with such…
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Wideband Field Strength Meter for Radio Frequency
Posted Jan 25, 2012 By Circuit ProjectsThe circuit was designed to measure the electric field strength in radio frequency band where it can be applied during the modulation of AM…
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USB RF Modem with Ping Pong CDC
Posted Jan 25, 2012 By Circuit ProjectsThe project was created to build an RF modem to link two personal computers with the use of frequency hopping technique.
The RF modem is…
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RF Signal Attenuator up to 30dB for 1MHz - 500MHz Input
Posted Jan 21, 2012 By Circuit ProjectsThis is a PIN diode based RF signal attenuator circuit operates with 1MHz – 500MHz input. PIN diodes are one of the most common parts used…
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Shortwave Radio Frequency Preamplifier
Posted Jan 21, 2012 By Circuit ProjectsThe circuit was designed to increase or amplify the short wave reception of radio frequency having a range of 5 MHz to 20 MHz.
- Shortwave…
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Designing M2M devices for First-Time Success
Posted Jan 15, 2012 By Dermot O'SheaRadio frequency (RF) optimization and over-the-air (OTA) performance in wireless devices is critical for network certification and PCS-1900 Type…
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