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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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772 Members, 178 Topics, Public Archive, Last Post:

FTdx-3000

Always identify yourself or your amateur call sign when you sign in.
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738 Members, 865 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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728 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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716 Members, 3,512 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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706 Members, 327 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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684 Members, 489 Topics, Private Archive, Restricted, 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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682 Members, 937 Topics, Private Archive, Restricted, Last Post:

FFMA

Membership requires having an amateur radio license.
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673 Members, 5,407 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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667 Members, 75 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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659 Members, 549 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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654 Members, 271 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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645 Members, 22,831 Topics, Public Archive, Restricted, Last Post:

G6LBQ

You may reproduce my designs for your own NON COMMERCIAL use within the Hobby of Amateur Radio.
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641 Members, 793 Topics, Public 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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637 Members, 193 Topics, Private 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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633 Members, 2,478 Topics, Public 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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626 Members, 407 Topics, Private 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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616 Members, 12,875 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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615 Members, 1,406 Topics, Public Archive, Last Post:

ic-905 / The new IC-905 VHF/UHF/SHF/Microwave Transceiver System

-10G head-end unit) **Please note** Licensed radio amateurs as well as SWL's are eligible for membership.
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615 Members, 263 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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612 Members, 239 Topics, Public Archive, Restricted, Last Post:

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