digital cluster

PY1UNU dipole for 80 meters - A dipole with coils for 80 meters band in portuguese.

G5RV 80-10 m antenna by PP5VX - A project for a multiband G5RV antenna that can run from 80 to 10 meters in portuguese

Windom antenna by PU1LHP - Project of a windom multiband antenna for 10 to 80 meters in portuguese

ZS6DN_3 - A view of the NCDXF Multiband beacon and a cluster of stacked yagi antennas.

DX Lite - mobile phone cluster interface - DX Cluster for mobile devices. Uses a lite interface to easily fit mobile phones display by G7VJR

IV3GKE web cluster and dx-call lookup - Single page live DX spots organized by Band. Includes an exremeley fast call sign lookup.

IZ0AWG DX Cluster - DX Cluster web interface at IZ0AWG-6

ODXC Web Monitor - Obninsk DX Cluster Web Monitor, telnet and Java based Web access. Offer a simple DX Cluster web interface.

LU9DA DX Cluster maps - Display maps of current dx spots per each band

HamRadio-DV - Digital voice amateur radio association

Digital Operating Modes - Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV

Green Heron Engineering - Makers of universal digital rotor controllers including wireless controllers

EADS North America Defense Test - Digital multimeters and frequency counters.

Yokogawa - Maker of optical spectrum analyzers, digital oscilloscope, digital power meters and more test equipmente related products

Signatec - Signatec manufactures pc based data acquisition waveform digitizers pci daq boards, digital signal processing pci dsp boards, waveform signal generator pci dac boards, and real time waveform recording products for the signal technology market.

Signal Forge - The signal forge 1000 signal generator is a portable, high-performance digital and rf signal source with a 1 ghz frequency range. features include digital, differential and ac coupled outputs

Digital modes Babel Tower - A review of ham radio digital modes with watefall differences between PSK RTTY Hellschreiber MFSK Olivia JT65A and digital voice by HB9TPL

W8DIG Central Ohio Digital Interconnect Group - Group of dedicated amateur radio enthusiasts who want to further digital modes of communication in the central Ohio area. We have been active in packet, APRS, VOIP and are now proud to provide D-Star digital voice and data connectivity.

D-ATV.com The Ultimate Resource for Digital Amateur Television - All you ever want to know about d-atv, datv and digital amateur television. d-atv.com is a site about the new digital amateur television age.

K4JCW - Hellschreiber Resources

Fuji-2/OSCAR-20 - Fuji-OSCAR-20 is the second in a series of Japanese Amateur communications satellites having both analog and digital Mode J transponders

Anritsu Connection - Anritsu provides solutions for wired and wireless communication systems and operators. Anritsu products include wireless, optical, microwave/RF, and digital instruments, as well as Operations Support Systems and solutions for use during R&D, manufacturing, installation, and maintenance.

AirLink Express - AirLink Express is a user friendly digital mode software package for the Amateur Radio Operator. The software is compatible with Microsoft Windows XP and Microsoft Windows Vista. It offers PSK, MFSK and RTTY digital modes with logging and macro capabilities. If you have ever used the Digipan software you will be immediately familiar with Airlink Express. The user interface is almost identical by Alex Krist, KR1ST

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

Tools4SDR : SDR Collaborative website - Home page of Tools4SDR. Tools4SDR is a collaborative website about software defined radio (SDR), the universal software radio peripheral (USRP), opportunist radio, cognitive radio, software toolboxes for research and teaching in digital communications.