Category: Digital

Weird IP networks: Internet via birds and ham radios

If you’re reading this, you have internet access. You probably have it either through a local cable or fibre ISP or through your cell phone provider. We all have one (usually both) of these. Speedy. Reliable (mostly). Boring. What happens when that infrastructure goes down? Maybe the power goes out somewhere along the network. Maybe […]

via the ARRL: HamSCI Presents Initial Eclipse Results at ARRL-TAPR Digital Communications Conference

At the 36th annual ARRL and TAPR Digital Communications Conference (DCC), held September 15–17 this year in St. Louis, HamSCI members presented preliminary evidence that the August 21 solar eclipse had a significant effect on HF propagation. The DCC is geared toward technically minded Amateur Radio operators who specialize in building and designing hardware and […]

via the ARRL: Radio Arcala to Leverage FT8 Digital Mode in Market Reef Activation

Radio Arcala (OH8X), the consortium of serious Finnish contesters, has heaped more praise on Nobel Laureate and software developer Joe Taylor, K1JT, for the recent beta release of FT8 mode. OJ0BH/OJ0JR will be active August 12-19 from Market Reef and expects to make use of FT8 and other modes that are part of Taylor’s WSJT-X […]

FT8 Mode is Latest Bright Shiny Object in Amateur Radio Digital World

It’s still in beta testing, but FT8 — the latest digital bauble to capture the imagination of the Amateur Radio community — has been luring away many of those already using the popular JT65 “weak-signal” mode. FT8 is included in a beta release of WSJT-X, version 1.8.0-rc1. Among its biggest advantages is a shorter transmit-receive […]

Quicker-Turnaround Digital Modes in Experimental Stage for WSJT-X Suite

Recent sporadic-E propagation openings on 6 meters and elsewhere have pointed up the need for a digital mode having faster turnaround time than currently available software versions offer. A recent WSJT-X reflector discussion allowed that, while the slow ’JT modes like JT65 and JT9 have excellent sensitivity, their 1-minute long transmissions may not permit completion […]

Free App Allows Blind Hams to Work PSK31

A free, new app — Accessible Digipan — has been released that allows blind hams to operate PSK31. The download includes the app, audio tutorials, detailed written guides, and additional helpful resources, plus DigiPan PSK31 and PSK63 software. ARRL member Richard McDonald, KK6MRH, and Jim Snowbarger, WA0PSS — both blind — developed the program. “Until […]

via HACKADAY: How To Receive Pictures From Spaaace!

The International Space Station, or ISS, has been in orbit in its various forms now for almost twenty years. During that time many of us will have stood outside on a clear night and seen it pass overhead, as the largest man-made object in space it is clearly visible without a telescope. Most ISS-watchers will […]

Set for blast-off in Abu Dhabi

The term broadcasting refers to sharing of information in the form of audio-video content to the end-user by the use of electronic mass communication medium. The GSC has its roots in the global space and satellite forum (GSSF), which has taken place in the Emirate since 2008. At its launch, the GSSF spearheaded the region’s […]

New Digital Modes Gain Traction for Moonbounce, but Occasionally Show Up on HF

In December, Joe Taylor, K1JT, released the latest version (1.7) of his WSJT-X software suite, designed to facilitate basic Amateur Radio communication using very weak signals (WSJT stands for “Weak Signal communication by K1JT”). Version 1.7 included the new modes MSK144 and QRA64, as well as ISCAT (ionospheric scatter). MSK144 and QRA64 (and QRA64A) are […]

via HACKADAY: Anatomy Of A Digital Broadcast Radio System

What does a Hackaday writer do when a couple of days after Christmas she’s having a beer or two with a long-term friend from her university days who’s made a career in the technical side of digital broadcasting? Pick his brains about the transmission scheme and write it all down of course, for behind the […]

RFinder and BrandMeister Team-Up for Daily Feed of Digital Repeaters

ARRL partner RFinder — the creator of a web and app-based directory of Amateur Radio repeaters worldwide — has collaborated with the BrandMeister network of Amateur Radio digital voice systems to include a daily data feed of digital repeaters. Digital repeaters are now categorized in RFinder by network, and RFinder’s Android and iOS apps can […]

via the ARRL: Video Demonstrates Digital Voice Plus Video “Teleconferencing” Scheme for HF

Rick Peterson, WA6NUT, in Colorado, is promoting FreeDV plus Video, a digital voice-plus-video application for HF. According to Peterson’s QRZ.com profile, FreeDV plus Video is a soundcard-based scheme to add a 1 frame/second, 36-line video image on the receiving station’s PC display. The signal bandwidth is 3.5 kHz, so it may not be compatible with […]

via the ARRL: FCC Proposes Rule Changes in Response to ARRL’s “Symbol Rate” Petition, Seeks Comment

The FCC has proposed to revise the Amateur Service Part 97 rules in response to the ARRL’s so-called “Symbol Rate” Petition for Rule Making (RM-11708), filed in late 2013, and it has invited comments on its recommended changes. The Notice of Proposed Rule Making (NPRM) in WT Docket 16-239, released on July 28, had been […]

This Week in Amateur Radio © 2017 Community Video Associates, Inc.