Content in the TECHNICAL category

Content (e.g. blog posts, information pages, and files/links) about the activities of the RRRA Technical Committee and the equipment/systems they maintain, along with technical topics of general interest.

Introducing AREDN

Our served agencies are accustomed to utilizing direct (i.e. person-to-person) and virtually instantaneous communications to conduct their operations. These means of communication (e.g. the telephone, email with attachments, and instant messaging through a wide variety of platforms) depend upon extensive, and often fragile, infrastructure which can be disrupted during incidents ranging in scale from a localized fiber-optic cable cut to regional severe weather events.

As past FEMA Administrator Craig Fugate, KK4INZ, said in Ham Radio Now Emcomm Extra #8, when an incident occurs “they just want their email to work.”

Traditional public service (aka Emcomm) messaging often does not meet the expectations of today’s served agencies (our customers). Amateur Radio operator typically utilize indirect communication paths with paper forms for origination / delivery and transcription style transfer methods (e.g. voice or CW); this does not provide the style of communication preferred by our customers.

Teardown Tuesday: Baofeng Amateur Radio

Inexpensive Chinese radios, such as those produced by Baofeng Technologies are popular as starter radios due to their low cost. They are also used as disposable or spare/back-up radios.

Learn about the internal architecture of the Baofeng UV-5RB in the Teardown Tuesday: Baofeng Amateur Radio Transceiver article on the All About Circuits website.

This article describes the disassembly process and includes a video of the tear down. It also includes circuit board photographs, a schematic diagram, block diagrams of the major components used in the radio, and links to data sheets for those major components.

Is Your Version of TQSL Up To Date?

“As of 1400 UTC on January 16, ARRL Logbook of The World (LoTW) no longer will accept contacts that have been digitally signed by versions of TQSL earlier than version 2.0. Users of earlier versions are encouraged to upgrade as soon as possible, as older TQSL versions contain uncorrected defects and display inaccurate error messages.”[ 1 ] TQSL for MacOS and Microsoft Windows may be installed from the LoTW Installing or Upgrading TQSL page.