2026-01-30 Zero Retries is an independent newsletter promoting technological innovation in and adjacent to Amateur Radio, and Amateur Radio as (literally) a license to experiment with and learn about...

2026-01-23 Zero Retries is an independent newsletter promoting technological innovation in and adjacent to Amateur Radio, and Amateur Radio as (literally) a license to experiment with and learn about...

2025-11-07 — A Remarkable Amateur Radio Presentation - LinHT at OpenAlt 2025 by Vlastimil Slinták OK5VAS, Retreating from Repurposing Existing Repeaters, Stixs Radio, Vibraphone, FreakWAN

2025-10-31 — LinHT Article (by the developers), MESHCON 2025 is a Wakeup Call, Test Bench in a Hand, N8GNJ Standby Battery System, direwolf 1.8, New AllScan USB Radio Interfaces, MMDVM Update

2025-10-25 — What’s New at DLARC - 2025-10, The (Amateur Radio) World Has Changed For Me, Followup on How to Get (Re) Started in Data Comm, FreeDV’s Baseband FM (BBFM) Technology, DIgiPi 2.0

2025-10-17 — Pacificon 2025 Zero Retries Debrief

2025-10-10 — Why Manufacturers May Be Reluctant About VHF / UHF / Microwave SDR “Real Radios”, VARA FM Via FM (Analog) Repeater, Help Track Our Light Sail!, Jesse Alexander WB2IFS GRCon 2025 Keynote

2025-10-03 — VHF-UHF Packet Path Predictions, Why Should You Consider Joining the TPRFN Network, How To Get (Re) Started In Amateur Radio Data Comm, The Wow@Home Radio Telescope, STARS-Me2 CubeSat

2025-09-26 — What’s New at DLARC — September 2025, Voice over Packet (VoP), The Software Based Future of Amateur Radio, Polar Modulation, Raspberry Pi 500+, Bridgecom Systems BCR-220 Repeaters

2025-09-19 — Zero Retries Digital Conference 2025 Wrap Up, Zero Retries Digital Conference 2025 Debrief - Part 1

2025-09-12 — Observations from GNU Radio Conference 2025 - Tersely

2025-09-05 — ZRDC Update, M17 Conference, AR Activities At GRCon 2025, Zero Retries Interesting AllScan.info Products, NASA Seeks Volunteers to Track Artemis II Mission

2025-08-29 — ZRDC 2025 Update, KK7NQN Transcriber Service Node, Build It And They Will Come Doesn’t Work, Icom ID-5200, DB0UV - Unique VHF / UHF Xponder, LiNK500, Beamforming, RadioSport SDR App

2025-08-22 — ZRDC 2025 Update, LinHT Progresses, ARRL Tech Awards, patty AX.25 stack, IPv6 /48 Subnets, JNOS 2.0q, KV4P V2, AREDN Plans for 2025, MMDVM Update, Ham DEFCON, AllStarLink Donations

2025-08-15 — ZRDC 2025 Update, What’s New at DLARC - August 2025, LinHT - Tech Innovation In AR, A Modest Proposal, Amateur Radio Future Systems Skunkworks, Mesh Networking, AMSAT-CA, AREDN at DEFCON

2025-08-08 — Three New Pseudostaffers, ZRDC 2025 Update, Meshtastic at Open Sauce 2025, 802.11ah Device Support in AREDN, 1.5 New NinoTNC Derivatives, Hams Over IP Invitation to Hamshack Hotline Users

2025-08-01 — 3000+ ZR Email Subs, ZR FCC Comments Guide, ZRDC 2025 Update, Notes From The M17verse, 12M SatNOGS Observations, Build a Personal Digi, AREDN Adds 802.11ah Devices, HamTV Active on ISS

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2025-07-26 — ZRDC 2025 Update, We Showed Up on FCC SB Docket 25-201, M17 Community Moves Past Mainstream MMDVM Support, Open Communications Organization (AM CELL), RRI and ARRL Sign MOU re: NTS

2025-07-18 — MMDVM Versus M17, Comments to FCC re: AST SpaceMobile Claiming 430-440 MHz For Its Use Are Due Monday 2025-07-21

2025-07-11 — Zero Retries Enters Its Fifth Year, What’s New at DLARC — Packet Radio History, Ten More Days for Comments re: AST SpaceMobile, Year Five of the Zero Retries Experiment In Progress

2025-07-04 — VARA FM - 12.5 kHz Bandwidth Versus 25 kHz Bandwidth, Jim Boddie NG2J - Silent Keyboard, ADRCS (IP400) Press Release, Radio Module 2 and DreamHAT+ - Unusual Radio Modules, HydraSDR RFOne

2025-06-27 — ZRDC 2025 Registration Now Open, AST SpaceMobile Lays Claim to 430-440 MHz and 902-928 MHz for Commercial Satellite Comms, Details About Data Over DMR, State of the APRS Foundation

2025-06-20 — The TPRFN Network: Could be a Lifeline in Times of Emergency, Oh, The Signals You’ll Make, Amateur Radio’s Lack of Imagination About Repeater Technology, Retevis Ailunce H1 DMR Radio

2025-06-13 — What’s New at DLARC - June 2025, M17 - N8GNJ’s Perspective as of June 2025, Followup On Single Frequency Repeaters, New Packet Commander IOS App, Jeff Geerling in QST, IP400 News

2025-06-06 — Raspberry Pi 5 Porch Ops, Minor Scoop About FlexRadio’s Impressive Engineering, Thorough Explanation of Single Frequency Digital Mobile Radio Repeater, N8GNJ Seminar at SEA-PAC 2025

2025-05-30 — 2800 Email Subscribers, A Few Last Zero Retries Impressions of Hamvention 2025, ARDC Priority Areas for Funding - R&D, The Importance of Internet-connected Systems for Amateur Community

2025-05-23 — Hamvention 2025 - Zero Retries Impressions, In Person Debut of IP400 Network Project at Hamvention 2025

2025-05-16 — Very Early Hamvention 2025, Very Briefly

2025-05-09 — Amateur Radio Isn’t Having All The (Radio) Fun, New Types of New Amateur Radio Operators… and Their Expectations, Langstone (V2) VHF / UHF Software Defined Radio Project, and more!

2025-05-02 - 200 (+) Issues of Zero Retries, What’s New With DLARC - May 2025, IP400 Ichiban - The Big Reveal, ZR Digital Conf 2025 Update, LinuxFest Northwest 2025, Introducing Project mini-shack

2025-04-25 — 2700 Email Subscribers, Webinar - IP400 and the Digital Future of Amateur Radio, Problems Reported with Early HF Signals zBitx Units, New 6m-20m, 6-band Hen-Delta DX Antenna R&D Project

2025-04-18 — IP400 Update 2025-04-18, Software Defined Radio is THE Imperative for US Amateur Radio, Some Selected Comments from FCC Docket GN 25-133, A Vision for Open Innovation: ARDC’s Strategy