micro

443 links - and 14 categories

80m Shortened Dipole Antenna - This antenna just requires about 24m of free space instead of 41m that a normal half wave 80m antenna needs to hang up. The so called loaded dipole uses a coil in every dipole arm to electrically lengthen the mechanical too short dipole arms. Every coil has an inductivity of 120 microHenry.
[ Hits: 154 | Votes: 0 | Rating: 0 ]

Basic Microwave Antennas - Utility-Driven Tradeoff Analysis, if you want to geto on the microwave bands , you will have to choose the proper antenna for your operating conditions. How to decide is not always easy, and you may also decide to build your own antenna.
[ Hits: 360 | Votes: 1 | Rating: 9 ]

Kuhne Electronic - High quality microwaves components for professional and radioamateurs. Power Amplifiers, Low Noise Amplifiers, Es hail 2 Converter Transverter, Signal Sources, Passive Components and Accessoires
[ Hits: 106 | Votes: 0 | Rating: 0 ]

SM1000 FreeDV Adaptor - The SM1000 allows you to run FreeDV without a PC. Connect the SM1000 to your SSB radio, and you now have Digital Voice (DV). You don�t have to buy a new radio to run Digital Voice! It�s based on a STM32F4 micro-controller, has a built in microphone, speaker amplifier, speaker, and transformer isolated interfaces to your radio.
[ Hits: 129 | Votes: 0 | Rating: 0 ]

Tropospheric Ducting Forecast Europe - The areas noted in the forecast have the necessary atmospheric conditions to produce tropospheric bending of VHF, UHF and/or microwave radio waves. Tropospheric bending extends the range of radio & TV stations well beyond their normal limit and thus increases interference amongst stations as well.
[ Hits: 157 | Votes: 1 | Rating: 10 ]

FreePCB - FreePCB is a free, open-source PCB editor for Microsoft Windows, released under the GNU General Public License. It was designed to be easy to learn and easy to use, yet capable of professional-quality work.
[ Hits: 155 | Votes: 1 | Rating: 5 ]

MorseExpert for Android ^updated - Morse Code Decoder for Android based on the algorithms implemented in CW Skimmer. Morse Expert decodes Morse Code audio to text. It is optimized for decoding weak, fading signals in the presence of interference, especially on the Amateur Radio bands. The input audio might come either from the built-in microphone or from another device, such as a radio receiver.
[ Hits: 329 | Votes: 6 | Rating: 7.67 ]

BPQ32 the AX25 Networking Package for Windows - BPQ32 allows a computer running under Microsoft Windows to act as a Node in a NET/ROM compatible AX25 network, and to support a multiuser Mailbox, or other similar applications.
[ Hits: 310 | Votes: 1 | Rating: 10 ]

AppCAD - Free windows application for RF Microwave and Wireless applications. AppCAD is useful for the design and analysis of many circuits, signals, and systems using products from discrete transistors and diodes to Silicon and GaAs integrated circuits. AppCad is a unique suite of RF design tools and computerized Application Notes to make your wireless design job faster and easier
[ Hits: 134 | Votes: 1 | Rating: 8 ]

Universal HF Tracker - The PCB can produce a High Frequency RF signal in the range of 1MHz to 12.5MHz using an AD9833 Direct Digital Sequence (DDS) frequency synthesizer. The signal can be modulated with different Weak Signal modes such as WSPR, JT9 and JT65 using our Arduino 5V/16MHz Pro Micro software.
[ Hits: 145 | Votes: 0 | Rating: 0 ]
WSPR beacon - A WSPR beacon project based on Arduino nano (atmega328P) based microcontroller
[ Hits: 237 | Votes: 0 | Rating: 0 ]

Decoding hand-sent Morse Code with Arduino - Two easy to build microcontroller projects for machine recognition of hand-sent morse code
[ Hits: 161 | Votes: 1 | Rating: 8 ]

Juma Keyer1 - Miniature PIC microcontroller based keyer kit with convenient modes. The kit includes PCB, componets, knob and ready programmed PIC microcontroller. Author make available from his web site Circuit diagram, Component layout,List of components and downloadable Software
[ Hits: 101 | Votes: 0 | Rating: 0 ]
CW Keyboard and Keyer - A Combination CW Keyboard and Paddle Keyer. It uses a single Atmel microprocessor, the ATmega328P from the AVR family, and a 4 row by 20 column LCD display module.
[ Hits: 264 | Votes: 1 | Rating: 8 ]

Alinco DR-605 Microphone Cable Repair - Repairing the RJ45 plug end of the mic cable of a Alinco DR-605 dual band mobile transceiver. Alinco microphones are well known for the cable jacket getting brittle and breaking
[ Hits: 125 | Votes: 0 | Rating: 0 ]

PIC CW Decoder - CW decoder using a PIC microcontroller. This is a morse code decoder made using a PIC(16F88) microcontroller, this project supports displays with multiple controller chips
[ Hits: 167 | Votes: 0 | Rating: 0 ]

Cigarette Pack for 20 meters Revised - Revision of the Cigarette Pack 14MHz SSB QRP Micro-Transceiver
[ Hits: 138 | Votes: 1 | Rating: 10 ]

Simple 2.4 GHz SWR Meter - This is a simple 2.4 GHz SWR meter which is based around surplus microwave hardware which can be easily found. The main component is a MECA -20/-20 dB Directional Coupler which has a frequency range of approximately 700 MHz to 2.5 GHz.
[ Hits: 144 | Votes: 2 | Rating: 6 ]

AnyRig A Flexible Digital Mode Interface - This project uses an inexpensive Teensy microcontroller as the core of a flexible interface that provides a high-fidelity sound card and VOX functions for controlling the radio.The interface firmware supports variable VOX delay, CW and RTTY keying via audio (such as is available from Fldigi), and RTS and DTR control of any keying function, all via a single USB connection to the PC.
[ Hits: 143 | Votes: 0 | Rating: 0 ]

Specan Spectrum analyzer - The Specan is actually a very simple but robustly built receiver. it is, in essence, a double conversion superhet receiver with 112 Mhz and 12 Mhz Intermediate frequencies. The first mixer uses an Si570 as the local oscillator. The Ardiuno that controls the Specan is a very flexible microcontroller board that you can program in simple C language
[ Hits: 86 | Votes: 1 | Rating: 9 ]