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HeathKit-HFAmps / Heathkit-HFAmps

A valid amateur radio license must be given to join the group.
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1,216 Members, 3,701 Topics, Public Archive, Restricted, Last Post:

ardc / Amateur Radio Digital Communications

The mission of Amateur Radio Digital Communications (ARDC) is to support, promote, and enhance digital communication and broader communication science and technology, to promote Amateur
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1,210 Members, 101 Topics, Public Archive, Last Post:

rs-ba1 / ICOM RS-BA1 REMOTE SOFTWARE SUITE

A Moderated Group for those with an interest in the ICOM RS-BA1 Advanced Remote Control software, licensed Amateur Radio operating and related subjects.
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1,154 Members, 754 Topics, Private Archive, Restricted, Last Post:

nasota / North America Summits On The Air

Please keep conversations related to outdoor amateur radio activity and please post in English.
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1,153 Members, 8,765 Topics, Private Archive, Restricted, Last Post:

radioprogramming / Radio Programming

to: Commercial - Land Mobile Amateur Marine CB (citizens band) This group is in English.
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1,137 Members, 374 Topics, Private Archive, Last Post:

MidlandLMR / MidlandLMR

The primary focus of the MidlandLMR list is to provide a forum for discussion of the use of Midland land mobile radios in the Amateur Radio Service.
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1,118 Members, 4,673 Topics, Public Archive, Restricted, Last Post:

Supermon / Supermon - Manager / Monitor

New subscribers: (Required) - Please provide at least your First-Name and Amateur-Radio Callsign when joining the Supermon group subscription.
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1,065 Members, 296 Topics, Private Archive, Restricted, Last Post:

picoballoon / Amateur Radio Pico-Ballooning

This group is a meeting place for Amateur Radio Pico-Balloonists to share ideas, discuss techniques and to announce and post flight information.
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1,027 Members, 2,503 Topics, Private Archive, Restricted, Last Post:

Fistscw / FISTS - MORSE PRESERVATION SOCIETY

Please feel free to start various topics of discussion,preferably morse or amateur radio related. Any photos of yourself or shack can also be uploaded to the photos section.
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1,023 Members, 9,245 Topics, Private Archive, Restricted, Last Post:

repeaterbook / Repeaterbook.com

We offer the best FREE resource for amateur radio repeater information around the world.
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1,021 Members, 141 Topics, Public Archive, Restricted, Last Post:

MDSRadio / Modulation - Demodulation - Software Radio and the "RF-Seismograph" - measuring Space Weather and Earthquakes with your HF station!

All the information in this group is free to use as long as it is used for non-profit amateur radio purposes only.
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1,009 Members, 2,826 Topics, Public Archive, Restricted, Last Post:

qrparci / QRPARCI

For those interested in QRP amateur radio activities including but not limited to members of the QRP AMATEUR RADIO CLUB, INTERNATIONAL.
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1,006 Members, 2,238 Topics, Public Archive, Restricted, Last Post:

ICOM / Icom

All things Icom (general discussion about Icom products for Amateur Radio) --Please keep it friendly here.
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987 Members, 654 Topics, Public Archive, Last Post:

MSHV / MSHV Amateur Radio Software

Radio amateur program for sending and receiving digital modes like FSK315, FSK441, FT4, FT8, ISCAT, JTMS, JT6M, JT65, MSK144, MSKMS, PI4 and Q65 by Christo, LZ2HV.
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972 Members, 909 Topics, Public Archive, Restricted, Last Post:

Work-Sat / Work the Amateur Satellites - With Minimal Equipment!

Support forum for K6LCS' Work-Sat amateur radio satellites site!
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957 Members, 2,690 Topics, Public Archive, Last Post:

Yaesu-FT-991 / Yaesu FT-991(A) Users Group (Official)

Radio invite https://discord.gg/YssX8fe6dC Amateur Radio operator call-sign search by County :: (created) Amateur Call-search by County :: USA + Canada + Australia (created
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922 Members, 545 Topics, Private Archive, Restricted, Last Post:

RATPAC / RATPAC

Radio Amateur Training Planning and Activities Committee
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908 Members, 897 Topics, Public Archive, Last Post:

PiStar / Pi-Star Users Support Group

- https://discord.gg/pBk3da2Mxz https://discord.com/channels/883065604393803876/887815207739592784 NEXTION screens group. https://groups.io/g/NEXTION Discord- LIVE CHAT - Amateur
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890 Members, 395 Topics, Private Archive, Restricted, Last Post:

milpack / Milpack Group

Supporting the active and experimental use of these radios by amateur radio operators, modifications, alternate power supply, solar power, human powered generators, antennas, etc Group
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887 Members, 4,744 Topics, Public Archive, Restricted, Last Post:

radios4sale / radios4sale

This list is NOT for amateur equipment, shortwave, or scanners, but may be used by amateurs selling or buying commercial LMR equipment.
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859 Members, 21,787 Topics, Private Archive, Restricted, Last Post:

YaesuSystemFusion / (Largest) Yaesu System Fusion (Official) User Group

Radio invite https://discord.gg/YssX8fe6dC Yaesu website www.bit.ly/yaesu2 www.bit.ly/yaesu4 https://www.yaesu.com/ Amateur Radio operator call-sign search by County :: (created)
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852 Members, 463 Topics, Private Archive, Restricted, Last Post:

Test-Equipment-Design-Construction / Test Equipment Design and Construction

Measuring devices for hobby / amateur radio use are encouraged, as are those that exceed the capabilities of standard laboratories such as NIST, NPL, METAS etc.
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845 Members, 152 Topics, Public Archive, Last Post:

DXLog / DXLog support and community forum

English language group for support and discussion of DXLog.net amateur radio contest logging software.
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830 Members, 3,305 Topics, Public Archive, Last Post:

wsjtgroup / The WSJT GROUP

Discussion on amateur radio weak signal communication software, such as WSJT-X AND all other forks or add-ons to the program, as well as general questions on setting up the software
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819 Members, 795 Topics, Public Archive, Last Post:

MMSSTV / SSTV

Anyone offering help does so in the true spirit of amateur radio.
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806 Members, 296 Topics, Private Archive, Restricted, Last Post:

Butternut / Butternut Antennas

This is THE support group for Butternut Amateur Radio Antennas. You MUST provide your first name and Call Sign as your Display Name for membership!
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804 Members, 2,556 Topics, Public Archive, Restricted, Last Post:

Olivia / Olivia Digital Mode Radioteletype on HF

The first on-the-air tests were performed by two radio amateurs, Fred OH/DK4ZC and Les VK2DSG, on the Europe-Australia propagation path in the 20-meter shortwave radio amateur band.
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784 Members, 415 Topics, Public Archive, Restricted, Last Post:

ON6MU / ON6MU's Software/Hardware discussion group

Satellite Packet Communications: Many of the amateur radio satellites in orbit contain computer systems that provide packet capability.
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784 Members, 33 Topics, Public Archive, Last Post:

antenna-research / Antenna Research

The group was set up by a former professional antenna designer who wanted somewhere to discuss interesting research topics, without being bogged down with basic amateur radio antenna
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765 Members, 174 Topics, Public Archive, Last Post:

FTdx-3000

Always identify yourself or your amateur call sign when you sign in.
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734 Members, 833 Topics, Public Archive, Restricted, Last Post:

TXBPF

If you wish to join this group and hold an amateur radio licence you should drop me a note with your call-sign when subscribing.
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731 Members, 950 Topics, Public Archive, Restricted, Last Post:

voip-wxnet

IRLP/ECHOLINK - VoIP (Voice over Internet Protocol) Amateur Radio Severe Weather Reporting Network. Participating Linked Repeater Owners / User Group Remailer.
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714 Members, 3,444 Topics, Public Archive, Last Post:

TinyTrak / TinyTrak - A Group for Users of All Byonics Products

General APRS questions should be directed to an APRS list (e.g. https://groups.io/g/APRS) Please state your valid amateur radio call sign when requesting to join and always sign your
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710 Members, 321 Topics, Public Archive, Last Post:

tarpn / T.A.R.P.N. -- Terrestrial Amateur Radio Packet Network

The system is fully Amateur Radio, and not linked via commercial services. This is an Amateur Radio project. No Internet required and no Internet desired.
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678 Members, 912 Topics, Private Archive, Restricted, Last Post:

kenwood / Kenwood Radios

Amateur Land Mobile Radio NEXEDGE NXDN Project 25 (P25) DMR Analog ProTalk TK-5210, TK-5310, TK-5710/TK-5710H, TK-5810/TK-5810, TK-5410/TK-5410H Motorola Tait Kenwood Icom Vertex
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658 Members, 329 Topics, Private Archive, Restricted, Last Post:

YAESU-FTDX10 / YAESU FTDX10

Radio operator call-sign search by County :: (created) Amateur Call-search by County :: USA + Canada + Australia (created) Canada - https://bit.ly/callsigncan USA - https
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647 Members, 402 Topics, Private Archive, Restricted, Last Post:

ninotnc / NinoTNC Support Reflector

reflector This group is run by the TARPN organization -- Terrestrial Amateur Radio Packet Network.
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646 Members, 538 Topics, Private Archive, Restricted, Last Post:

070Club / 070 Club Group

This is the groups.io group/reflector for the 070 Club, the world's premier amateur radio PSK-31 user club.
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645 Members, 22,609 Topics, Public Archive, Restricted, Last Post:

FFMA

Membership requires having an amateur radio license.
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642 Members, 5,139 Topics, Public Archive, Last Post:

HBTE / Amateur Radio Homebrew Test Equipment

Focus is on Amateur Radio Homebrew Test Equipment. This means test equipment that you have designed, built, or are thinking about building.
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641 Members, 270 Topics, Public Archive, Last Post:

G6LBQ

You may reproduce my designs for your own NON COMMERCIAL use within the Hobby of Amateur Radio.
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635 Members, 793 Topics, Public Archive, Restricted, Last Post:

USNCVA / United States Naval Cryptologic Veterans Association

Amateur Radio Operators must provide their current call sign. 5.
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632 Members, 12,836 Topics, Private Archive, Restricted, Last Post:

WinlinkWednesdayNTX

Anyone with a valid amateur radio license is free to get a Winlink account, and is more than welcome to check in to this net.
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629 Members, 236 Topics, Public Archive, Last Post:

Scanners / Scanners - Uniden / Whistler

DISCORD - LIVE CHAT - scanners https://discord.gg/G36wZJvhE2 Discord- LIVE CHAT - Amateur Radio invite https://discord.gg/dw7TgUhfFV Radio Scanners https://groups.io/g/Scanners Radio
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626 Members, 75 Topics, Private Archive, Last Post:

ft-710 / Yaesu FT-710 AESS Radio Discussion Group

Discord- LIVE CHAT - Amateur Radio invite https://discord.gg/YssX8fe6dC discord Search:: YAESU YAESU FT-710 website (CaSe Sensitive) shortcut.
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618 Members, 394 Topics, Private Archive, Restricted, Last Post:

qfox

A QRP Fox Hunt is a series of 90 minute Amateur Radio H.F. events during which low-power (QRP) stations, or "Hounds," attempt to make contact with specific QRP stations designated
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612 Members, 17,514 Topics, Public Archive, Last Post:

RacalRadio / Racal Radios

We very much welcome postings relating to on-air use of the Racal manpacks, either anecdotal during their military service or references to current use in amateur radio or other service
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601 Members, 2,417 Topics, Public Archive, Last Post:

tait / Tait Radios

Discussion about Tait radio products. For use in but not limited to commercial, ham/amateur and CB radio use. Part of the Radio Programming Community.
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600 Members, 437 Topics, Private Archive, Restricted, Last Post:

RSGB-Workshop / RSGB Workshop

Membership is open to all radio amateurs and radio and electronics enthusiasts and anyone of a technical bent, and certainly not just for RSGB members.
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599 Members, 1,279 Topics, Public Archive, Last Post:

HamRadioHelp / Ham Radio Help

Ask for help on Amateur Radio topics here.
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598 Members, 669 Topics, Public Archive, Last Post:

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