Zero Retries Index 2021
Index of Zero Retries Issues and stories published in 2021
For PDF versions of Zero Retries, see the
Zero Retries newsletter collection on
Digital Library of Amateur Radio & Communications (DLARC)
on the Internet Archive.
Zero Retries Index 2026 | Zero Retries Index 2025 | Zero Retries Index 2024
Zero Retries Index 2023 | Zero Retries Index 2022 | Zero Retries Index 2021
Zero Retries Index Master (all years consolidated)
Links below skip ahead to each month on this page with the table of contents for each issue.
July 2021
Zero Retries 0000 - 2021-07-09
A few disclaimers about Zero Retries
US Worldview
Technology Centric
Data Centric
VHF/UHF Centric
Drinking From a Firehose
Not Necessarily Amateur Radio
Open Access… with a dash of Shameless Commerce
Amateur Radio SWOT - Minus the SW and T
Story 1: ARRL and TAPR DCC Student Paper Program
Story 2: ARISS Next Generation Radio Systems
Story 3: The Radios That Weren’t; Part 1
Story 4: The Radios That Weren’t; Part 2
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0001 - 2026-07-16
Amateur Radio Digital Water Holes (and Building Community)
1A - Establish a simplex frequency (or, if you’re able to do so, an FM repeater)
1B - Use lightly used FM voice repeaters as a Digital Water Hole
3 - Make yourself available for discussion, coaching, and instruction
Scholarships You Might Not Know About
Presentation - Advanced Data Modes for Amateur Radio
Zero Retries Events of Interest - 2H 2021
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0002 - 2021-07-23
The US Needs More Radio Engineers
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0002A - Special Issue - TM-V71A - 2021-07-24
The Kenwood TM-V71A “data” radio is currently in stock at Ham Radio Outlet
Zero Retries 0003 - 2021-07-30
fsq is a Gateway Drug for Building a Radio Community
Amateur Radio in Orbit - OSCAR 0
QSO Today Virtual Ham Expo - 2021-08-14 and 15
Comments on This Issue (Redirects to Comments Page)
August 2021
Zero Retries 0004 - 2021-08-06
VARA FM Features That Weren’t on my “New Paradigm Fantasy Radio”
There Be Dragons - Audio Adjustments for VARA Can Be Maddening
VARA FM Introduction / Training Videos
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0005 - 2021-08-13
Modernizing Amateur Radio Regulations
Steve Lampreur KB9MWR
ARDC Technical Advisory Committee Proposal (the Other ARDC)
Amateur Radio In Orbit - ARISS
Unfair Advantage - The CoCo Lives!
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0006 - 2021-08-20
Intro to VARA FM Deep Dive - Part 2
More on Experimenters vs Communicators
Something of a Plan for Creating RAMA
A Brief, Imperfect Specification for RAMA
One VARA License Per Computer?
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0007 - 2021-08-27
Introduction to New Paradigm Network Amateur Radios
Software Defined Transceivers for HF - Solved Problem
The Icom IC-9700 Doesn’t Make The Cut (for a NPNAR)
Software Defined Receivers… We Got! The Low Hanging Fruit
Software Defined Transceivers… We Got Those Too! More Low Hanging Fruit
Two words about Software Defined Radios - GNU Radio
The Complete Software Defined New Paradigm Network Amateur Radio
Comments on This Issue (Redirects to Comments Page)
September 2021
Zero Retries 0008 - 2021-09-03
New Paradigm Network Amateur Radios - Part 2
Use AREDN Radios to Create Mesh Networks (Microwave Frequencies).
Use HamWAN and / or Part 15 Radios to Create Fixed-link Networks (Microwave Frequencies).
Create / Modify Amateur Radio 2.4 GHz Power Amplifiers for 2.3 GHz AREDN Radios.
Create a Driver Amplifier Compatible with Software Defined Transceivers.
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0009 - 2021-09-10
New Paradigm Network Amateur Radios - Part 3
Create an Equivalent of the SYMEK TX4RS Using 2021 Technology
Create an Equivalent of the Kantronics D4-10 Radio Using 2021 Technology
Create an Equivalent of the Icom ID-1 Radio Using 2021 Technology
Create a Frequency Hopping Spread Spectrum Radio Using 2021 Technology
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0010 - 2021-09-17
Some Organizations and Tools That Could Help Create New Paradigm Network Amateur Radios
A Long, Imperfect Specification for RAMA
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0011 - 2021-09-24
QSO Today Virtual Ham Expo Presentations - August 2021
Thoughts on the 2021 ARRL and TAPR DCC
KB6NU - Why aren’t more hams using GNU Radio?
A Basic Emergency Power Supply
AMSAT-NA Searches the Sofa Cushions for Funding for Next Few FM Repeater EasySats
Comments on This Issue (Redirects to Comments Page)
October 2021
Zero Retries 0012 - 2021-10-01
Exploring the Idea of a Geostationary Amateur Radio Satellite for the Western Hemisphere
Tom Clark K3IO - Silent Keyboard
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0013 - 2021-10-08
Amateur Radio at the Bellingham Makerspace
Amateur Radio at the Bellingham Maker Faire
ARRL Continues Its Efforts to Preserve Amateur Radio Secondary Use of the 3 GHz Band
Inductive Twig Will Cease Operations 2021-12-31
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0014 - 2021-10-15
Observations about the Bellingham Maker Faire
Bellingham Maker Faire - Takeaways for Amateur Radio
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0015 - 2021-10-21
HamWAN Puget Sound Data Ring Loses Several Sites
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0016 - 2021-10-29
Dire Wolf Implements New Forward Error Correction Technique
Prototype Pi Teensy Micro v1.1 TNC
Masters Communications Model DRA-MIX-MUX
We May Soon Have a Fully Empowered FCC
Overview of DragonOS Focal - Linux ISO with SDR Programs
Comments on This Issue (Redirects to Comments Page)
November 2021
Zero Retries 0017 - 2021-11-05
New Yaesu FTM-6000R “Data” Radio
ARDC Grant Award for the ARISS‐USA STEREO Education Project
Amateur Radio Won’t be on the ARTEMIS II Mission
For a 1 kbps Link on a 15 km Path, (Mostly) All You Need is Software
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0018 - 2021-11-12
HYS TC-8900R - 29 MHz, 50 MHz, 144 MHz, and 440 MHz “Data” Radio
TYT TH 9000D Monoband Radios Can Be Modified for Data
New Raspberry Pi OS - Bullseye
More on Amateur Radio Backup Power
ASRTU-1 CubeSat with V/U FM Transponder Submitted for IARU Coordination
Ham Radio CubeSats to Deploy From ISS Including One on 76 GHz
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0019 - 2021-11-19
A Few Bits More on the TYT TH-9000D
Field Report on the Yaesu FTM 6000R for High Speed Data
Some Thoughts on Technological Tribalism
FlexRadio’s Commitment to Amateur Radio
Broadcastify For Amateur Radio
FaradayRF Lives On in the Internet Archive
TAPR Packet Status Register (PSR) Newsletter Issue 150 - Autumn 2021
DJ4ZC New Deutscher Amateur Radio Club (DARC) Honorary Member
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0020 - 2026-11-26
Bridgecom Systems Exits the 222-225 MHz Repeater Business
Comments on This Issue (Redirects to Comments Page)
December 2021
Zero Retries 0021 - 2021-12-03
Satellites, Satellites, Satellites, Satellites, and… Satellites
TinyGS Open Source Network of Satellite Ground Station Receivers
AmbaSat - Build Your Own Spacecraft and Launch it Into Space
AREDN Updates (extracted from Facebook)
Meshing AREDN Nodes with an Ethernet Switch (Local - not Tunneling)
Amateur Radio Data Communications Orgs and Events
Join the Fun on Amateur Radio 1
Join the Fun on Amateur Radio 2
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0022 - 2021-12-07
***** Special Issue *****
Appearance on FLOSS Weekly Podcast on the TWiT.tv Network
Join the Fun on Amateur Radio 1
Join the Fun on Amateur Radio 2
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0023 - 2021-12-10
My Appearance on FLOSS Weekly - Open Source and Amateur Radio
Join the Fun on Amateur Radio 1
Join the Fun on Amateur Radio 2
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0024 - 2021-12-17
Icom SHF Project - Super High Frequency Band Challenge
ÖVSV - New WRAN hardware - 7W 144/433 and 10W 52 MHz
Great Scott Gadgets - Testing a HackRF Clone
Four Advanced Radio Projects from Crowd Supply
WWV, WWVH Start Test Modulation Broadcasts
Intro to PACKRAT Tutorial Series
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0025 - 2021-12-24
World’s Smallest Moon Lander from Japan will Put Ham Radio Transmitter on the Moon
Good Interview with Michelle Thompson W5NYV
Whatcom County Data Over Repeater Weekly Net
Amateur Radio Data Communications Orgs and Events
Join the Fun on Amateur Radio 1
Join the Fun on Amateur Radio 2
Comments on This Issue (Redirects to Comments Page)
Zero Retries 0026 - 2021-12-31
Zero Retries Lookback on 2021 - Part 1
Join the Fun on Amateur Radio 1
Join the Fun on Amateur Radio 2
Comments on This Issue (Redirects to Comments Page)