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.

New Part 95 Rules Published in the Federal Register

On August 14, 2018, ARRL reported:

Reorganized and updated FCC Personal Radio Services (PRS) Part 95 rules have been published in The Federal Register. … Effective September 30, 2019, it will be illegal to manufacture or import handheld portable radio equipment capable of operating under FRS rules and under other licensed or licensed-by-rule services. 1

The updated regulation is effective September 28, 2018.

KD0IOE DMR And YSF Repeater Available For Public Use

There is now another digital repeater available in the Fargo-Moorhead metro area: the KD0IOE DMR/YSF repeater at 444.625+ CC1. This repeater is an MMDVM based system that currently has DMR and YSF enabled, with both timeslots available. It is located at my West Fargo home, linked to the Internet and available for public use.

A technical description of the repeater, along with DMR timeslot and Brandmeister information is available on the KD0IOE Repeater page.

Please contact me at if you have any specific questions about my setup.

Introduction to WSJT-X FT8

FT8 is a new mode included in WSJT-X versions 1.8 and later.

This weak signal mode is intended—and optimised—for making efficient barebones contacts; a definite plus during this time of poor propagation. Although FT8 does not support rag-chewing or contesting exchanges it is, none the less, well worth trying out in the Amateur Radio spirit of learning and experimentation.

The slides from my presentation after the adjournment of the April 17, 2018, RRRA Business Meeting are available for download from the Training and Education | Presentations folder on the RRRA File Sharing server.

Sabin 10m Beacon Callsign Change

The 10M Propagation Beacon; located in Sabin, MN, and operating at 28.2865 Mhz with the call-sign of W0ILO; was deactivated on April 7, 2018.

A new 10M Propagation Beacon using the call-sign WB0BIN, operating on the same frequency and from the same location in Sabin, was activated on April 9, 2018, at 14:00 UTC.

Please send beacon reception reports to .