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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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774 Members, 181 Topics, Public Archive, Last Post:

FTdx-3000

Always identify yourself or your amateur call sign when you sign in.
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728 Members, 870 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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719 Members, 953 Topics, Public Archive, Restricted, 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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709 Members, 522 Topics, Private 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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709 Members, 3,522 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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707 Members, 329 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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685 Members, 937 Topics, Private Archive, Restricted, Last Post:

FFMA

Membership requires having an amateur radio license.
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677 Members, 5,459 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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671 Members, 76 Topics, Private Archive, Last Post:

ninotnc / NinoTNC Support Reflector

reflector This group is run by the TARPN organization -- Terrestrial Amateur Radio Packet Network.
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665 Members, 555 Topics, Private Archive, Restricted, Last Post:

icomradio / Icom Radios

All types of Icom radio communications and scanners. Commercial - Land Mobile CB - Citizens Band Amateur Avionics Marine Network/IP Part of the Radio Programming Community.
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661 Members, 202 Topics, Private Archive, Restricted, 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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649 Members, 271 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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644 Members, 794 Topics, Public Archive, Restricted, 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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640 Members, 2,493 Topics, Public Archive, 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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639 Members, 22,892 Topics, Public 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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623 Members, 1,464 Topics, Public Archive, Last Post:

kcarc / Kitsap County Amateur Radio Club - KC7Z

Kitsap County Amateur Radio Club General Mailing List
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622 Members, 1,291 Topics, Private Archive, 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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622 Members, 407 Topics, Private Archive, Restricted, Last Post:

HarrisRadio

(Groups.io does not automatically set the displayed name, you have to do this) You may also provide your amateur radio call sign if you have one.
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618 Members, 2,664 Topics, Public Archive, Restricted, Last Post:

CalQRP / The California QRP Club

The California QRP Club is dedicated to the promotion and enjoyment of Low Power Amateur Radio (QRP) communication using any authorized modes.
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616 Members, 1,170 Topics, Public Archive, Last Post:

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