digital data

New HF antenna HB9ABX  ^{updated  pop} - A new, revolutionary design allows the construction of small HF antennas, which provide the same efficiency as large antennas. This antenna can be built for all HF bands, from 10 to 80 m.

World Contest Station Database - Database of over 3000 active hf contest stations worldwide

Italian Callbook - CallBook OnLine - this callbook includes data from over 50000 italian radio amateurs

Ham Radio Deluxe DX Spots - Ham Radio Deluxe DX Cluster data is taken from the Amateur Radio DX cluster using DXSpider

VU2LFA ham radio in india - This site is basically for the begeners (SWL) of india. This site is supporting to digital communication for hams also.

HAM Rádio BR / Feirnha DIGITAL - Brazilian free classifieds, links and more.

DCI Digital Communications Inc. - Filters, Duplexers, Combiners Bi-Directional Amps

RACOM - Radio modems - RACOM is a Czech company specialized in design and production of radio modems and other devices for wireless data networks for radio channels from 140 to 900 MHz. RACOM radio data networks are suitable for data transfer in telemetry & SCADA applications, transaction networks, security systems, IP networks and firts of all mobile tracking and fleet management.

US Frequency allocations - Searchable database of frequency allocations in the US, from cellular frequencies, paging frequencies to marittime and microwave frequencies.

CQ SSTV de KB4YZ - Amateur slow scan television and digital sstv by KB4YZ

ESA Portal - Calling all radio amateurs Priority listing - Radio amateurs worldwide are being asked to help collect data from the student-built SSETI Express satellite, due to be placed in orbit on 27 September. To encourage them, ESA’s Education department has organised two competitions and is supplying free downloadable software.

Icom AH-4 modifications - Mods for the Icom AH-4 antenna tuner

Kenwood ts-2000 and packet/digital mode - Using the TS-2000 for packet and digital modes. How to connect the Kenwodd TS2000 to TNC

Modifications for the Yaesu FT-817 by KB2LJJ - KB2LJJ Radio Mods Database

Rigpix database -Yaesu - VX-7R - Picture and specifications for Yaesu VX-7R

Rocket Radio UK - UK based suppliers of CB, amateur radio equipment and DAB digital radios. Other products include antennas, base and handheld scanners, and accessories including microphones, books.

Conexion digital bullettins - SWL DX bulletins in spanish

DF9CY Project Auriga - PA is a JAVA software package containing several programs, SW/VHF/UHF Logbook (imports format from RADIOMAN, VMT), Log conversion to HTML format, Import and export functions for RADIOMAN, CT RES files, BV QSL Labels, CSV etc. Internet DX-Cluster support, Keeps track of your worked Callsigns, Checks your worked Grid Squares per band, Databases for worked Grids and Callsigns Uses K1EA CQWW.CTY country file, Easy command line version for terminal operation Moontracking as clock, Pathloss calculation

Baudline signal analyzer - A Linux based FFT spectrum analyzer designed for time-frequency browsing and scientific data visualization. Oscilloscope waveform, statistical histogram, accumulated spectral trace,Weak Signal reception, continuos data logging, FFT Analyzer and specialized measurement windows.

DJ-X3 Memory Management Utility - DJ-X3 Memory Management Utility - Edit Memory Bank channels (700). Upload / Download, Load / Save Memory Bank channel data, Full / Partial Reset of radio.

Digital Radio DCM - Programmable Digital Radio Receivers

FhG Software Radio - The Fraunhofer Software Radio is a first-class DRM reception system which provides audio and multimedia data content

Are you ready for BPL - Broadband over power lines (BPL) is a technique for transmission of high speed data (broadband Internet) over powerlines. Access BPL technology injects radio frequency energy into powerlines which were not designed for transmission of radio frequency energy, and leak substantial energy that causes interference to radiocommunications service

A 80/40m Direct Conversion HF Receiver with DDS VFO - Juha (OH2NLT) and Matti (OH7SV) have designed JUMA-RX1, an award winning 80/40m direct conversion HF receiver with highly accurate direct digital synthesis VFO. The receiver is very compact, because it constructed using surface mount components. No coils need to be wound to construct this receiver!

Wavefront CompactPCI (CPCI) RF converter - The Wavefront CompactPCI (CPCI) RF converter provides a complete half-duplex radio front-end in an industry-standard 6U format. The architecture consists of dedicated receive and transmit channels that share a common RF interface.