Zero Retries Digital Conference 2025
Updated July 3, 2025
The inaugural Zero Retries Digital Conference (ZRDC) 2025 will be held in Everett, Washington, USA on Saturday, September 13, 2025.
ZRDC 2025 is sponsored by the Zero Retries newsletter.
ZRDC 2025 will showcase technological innovation in Amateur Radio as discussed in the Zero Retries newsletter. Planned presentations and demonstrations include (but are not limited to):
The IP400 Networking Project
M17 Digital Voice / Data system (including demonstrations with an M17 repeater)
MMDVM-TNC data system (including demonstration of MMDVM-TNC via repeater)
AREDN, HamWAN, and other Amateur Radio microwave networking
ZRDC 2025 builds on the rich history of significant Amateur Radio conferences in the Seattle, Washington metropolitan area that also showcased technological innovation in Amateur Radio, including Comm Academy, MicroHAMS Digital Conference, Valley Camp Summer Gathering, and the 1996 and 2013 TAPR Digital Communications Conferences (both of which are the first and second best attended DCCs).
ZRDC 2025 will be held in the same venue as the GNU Radio Conference 2025 - the Edward D. Hansen Conference Center in downtown Everett. GRCon 2025 will be held Monday September 8th through Friday, September 12th, 2025.
While GRCon 2025 and ZRDC 2025 are being held consecutively, and at the same venue, the two events are independent of each other.
The manager of the Zero Retries Digital Conference is Tina Stroh KD7WSF.
Registration for ZRDC 2025 Now Open!
Registration for the inaugural Zero Retries Digital Conference (ZRDC) 2025 is now open (June 27, 2025)!
Click here to register for ZRDC 2025
Registration offers in-person access and virtual attendance options to attend the inaugural Zero Retries Digital Conference 2025. Ticket price descriptions state what is included with each level of participation. Such as, in-person attendance includes access to the conference along with conference proceedings, welcome refreshments, refreshments throughout the day, buffet lunch and a chance to win raffle prizes.
The venue of ZRDC will accommodate a large number of attendees so ticket sales will not be capped.
Welcome refreshments will include fresh fruit with a Greek yogurt dip, assorted pastries, muffins, doughnuts and scones, and assorted bagels with butter, cream cheese and preserves. Coffee , hot tea, and juice will be available.
The buffet lunch will consist of a green and Southwest style salad, deli sandwich display of turkey, ham, and roast beef with cheddar, swiss, provolone cheeses, various condiments, assorted deli breads, deli wraps, roasted veggies, polenta bar, apple crumble and brownies. Beverages choices of coffee, tea, iced tea, and lemonade will be offered.
Throughout the day, coffee service, lemonade and fruit infused water will be available.
The latest information on ZRDC 2025 will be maintained at: https://www.zeroretries.org/p/conference
Zero Retries 2025 Press Release - Registration Is Open
One Page Flyer
Individual Amateur Radio Operator Sponsorship Letter
Corporate Sponsor Packet
Call For Papers
Sponsorship queries should be directed to Tina Stroh, KD7WSF
tina@zeroretries.net.
ZRDC Email List
If you would like to stay abreast of the latest developments regarding the Zero Retries Digital Conference, you can join the ZRDC email list - https://groups.io/g/zrdc. This will be a forum for announcements, discussion between attendees, etc.
Media and Other Mentions of ZRDC 2025
ZRDC 2025 is an ARRL Operating Specialty Convention and is now included on ARRL’s Hamfest and Convention page: https://www.arrl.org/hamfests/zero-retries-digital-conference-2025. (2025-04)
2025 Pacific Northwest Hamfairs & Events (2025-04-04)
Amateur Radio Daily (2025-04-08)
Amateur Radio Weekly (2025-04-08)
The Random Wire Newsletter Issue 126 (2025-04-11)
Amateur Radio Newsline Report 2477 for Friday, April 18th, 2025. In the audio file, the ZRDC 2025 item begins at 6:56. (2025-04-17)
ARRL QEX (link is accessible only to ARRL members), May/June 2025, Conferences, page 25. (2025-05-01)
Amateur Television Journal, Issue 188, Upcoming Ham Conferences, page 10. (2025-06-15)
Amateur Radio Daily (2025-06-30)
ARRL QEX (link is accessible only to ARRL members), July/August 2025, Conferences, page 35. (2025-07-01)
ARRL QST, August 2025 (link is accessible only to ARRL members). The IP400 Network Project, page 77. (2025-07-01)
Surrey Amateur Radio Communications The Communicator, July - August 2025. Zero Retries column, Repeaters Are For Voice, Digipeaters Are For Data - NOT! Sidebar, page 81. (2025-07-01)
Amateur Radio Weekly Issue 388 - Registration for ZRDC 2025 now open (2025-07-05)
Random Wire 138 - Zero Retries Digital Conference: Registration is Open (2025-07-05)
(Planned) Ham Radio Workbench episode TBD (July or August, 2025).
(Planned) QST September, 2025 Convention and Hamfest Calendar.