The GB3OO DATV Repeater
We’ve built something rather special at GB3OO — and the best bit? Membership is completely free. Click Register and sign up — it takes about 30 seconds — and you’ll unlock features that make life a lot more fun.
FRNous avons conçu quelque chose de vraiment spécial à GB3OO — et le meilleur : l’adhésion est entièrement gratuite. Cliquez sur Inscription, cela prend environ 30 secondes, et vous débloquerez des fonctionnalités qui rendent tout ça bien plus amusant.
Register free →What you get
Session Recordings
Missed a great QSO? No problem. Our Time Machine lets you wind back and catch up on what you missed. (Yes, we called it a Time Machine. No, it doesn’t do weekends in 1985.)
FRVous avez manqué un bon QSO ? Pas de problème. Notre Time Machine vous permet de revenir en arrière pour rattraper ce que vous avez raté. (Oui, on l’a appelée Time Machine. Non, elle ne fait pas les week-ends en 1985.)
The Repeater Control Portal
The new & improved, beautifully nerdy dashboard that puts you in command of the repeater. World domination has never been so accessible. Open the portal →
FRLe tableau de bord nouveau et amélioré, magnifiquement geek, qui vous met aux commandes du relais. La domination mondiale n’a jamais été aussi accessible. Ouvrir le portail →
No Bump
Two stations keying up at once? The repeater handles it automatically now — the first signal goes full screen, a second takes Picture-in-Picture without interrupting what’s already on air. Nobody gets bumped. How it works →
FRDeux stations qui émettent en même temps ? Le relais gère ça automatiquement désormais — le premier signal passe en plein écran, le second passe en incrustation (PiP) sans interrompre ce qui est déjà à l’antenne. Personne n’est coupé. Comment ça marche →
Slack Notifications
Get a nudge the moment the repeater springs to life, so you’re never the last one to the party. See the full history →
FRRecevez une alerte dès que le relais s’active, pour ne jamais être le dernier informé. Voir l’historique complet →
Detailed Logbook
Shows the last 200 contacts with full signal data, MER readings and distance — well worth a look. View the logbook →
FRAffiche les 200 derniers contacts avec toutes les données de signal, les mesures MER et la distance — à consulter absolument. Voir le journal →
The GB3OO Morse Course
39 lessons, three a day (09:00, 15:00, 19:00), thirteen weeks, Koch method — full speed from lesson one. Starting Monday 24 August, wrapping up the week of 16 November 2026.
FR39 leçons, trois par jour (9h00, 15h00, 19h00), treize semaines, méthode Koch — pleine vitesse dès la première leçon. Début le lundi 24 août, fin la semaine du 16 novembre 2026.
All of it’s free. Register in about 30 seconds and everything above is unlocked straight away.
Register →A welcome message for our friends across the Channel — GB3OO is fully operational: 70cm input on 437MHz DVB-S2 333kSym/s, 23cm output on 1304MHz (2MSym/s, FEC 3/4), an always-on web stream, and every session recorded. Continental stations especially welcome, particularly during good tropo.
FRBonjour à toutes et à tous, le relais ATV GB3OO situé à Folkestone dans le Kent est maintenant pleinement opérationnel. Entrée 70 cm sur 437 MHz en DVB-S2 333 kSym/s. Le flux web est disponible en permanence sur rtmp://rtmp.batc.org.uk/live/gb3oo. Pour plus d’informations, consultez le site gb3oo.co.uk. La sortie 23 cm sur 1304 MHz (2 MSym/s, FEC 3/4) est maintenant active. Toutes les sessions sont enregistrées. Nous serions ravis d’accueillir toutes les stations continentales — françaises, belges et au-delà — particulièrement lors de bonnes conditions de tropo. 73 de G8YTZ !
Migrating from GB3JV? If you were already registered on the GB3JV web site as of 31/12/2025, your login credentials have been carried across to GB3OO automatically. After that date you’ll need to register separately on this site.
FRVous migrez depuis GB3JV ? Si vous étiez déjà inscrit sur le site GB3JV au 31/12/2025, vos identifiants de connexion ont été transférés automatiquement vers GB3OO. Après cette date, une inscription séparée sur ce site est nécessaire.
Partners & credits
📰 Latest News Updates
Newest first — scroll down for the full history.
The repeater now looks after itself; you no longer need to babysit it. The repeater tracks who’s live and works out what should be on screen automatically — this is what actually happens when a second person keys up mid-net. Full details on the Repeater Control Portal.
The GB3OO Morse Course — let’s get you sending and reading Morse properly, no grinding through it at a snail’s pace, no giving up at week three! Details above.
We’ve upgraded Logbook! The new Detailed Logbook page shows the last 200 contacts with full signal data, MER readings and distance — well worth a look. You’ll need to be logged in to view it, so register for your free membership if you haven’t already.
We’ve implemented an improvement on the 70cm Receiver; “false locks” and “short locks” can be quite annoying, so I’ve implemented an improvement to the lock detection that sets a 5 second timer before the lock is confirmed and the video switching MACRO begins, likewise if the signal fades for less than 5 seconds the repeater will stay on the input. If 5 seconds proves to be too short the timer can easily be changed. A big shout-out to “Claude” who wrote the code that worked first time!
From today GB3OO is now on the air! 1304MHz 2MSym/s FEC3/4
The dx keeps thundering in! Check out the log book page for the 15 “last seen” callsigns!
We are delighted to announce that the repeater equipment is now installed at the site in Folkestone:
- The Output is now streaming via the BATC web site or
rtmp://rtmp.batc.org.uk/live/gb3oo - The input stream receiver is operational (to obtain a password, please log in to this web site and select the “Streamer” menu for instructions and the password)
- The 70cm receiver is now working and accepts DVB S/S2 on 437MHz with 333kS/s
- The 23cm output will be operational within the next fortnight on 1304MHz DVBS/2 at 2MS/s FEC 3/4
Antenna installation complete, equipment installation scheduled for 21/05/2026.
ATEM Switcher & network equipment delivered, configured. Ad-Hoc web stream tests commence on the G8YTZ BATC streaming channel. Picture on the Gallery page.
GB3OO Repeater rack build is underway, repeater controller, receivers all racked ‘n stacked.
This web site goes live!
- Agreed Frequencies:
- 23cm Output: 1304MHz Horizontal polarisation, 2MS/s, FEC 4/5, 1080p/25.
- 70cm Input: The repeater’s 70cm input (437MHz) supports 333kS/s, from an omnidirectional dual stack WIMO “Big Wheel” antenna with a gain of 5dBi.
- 2m “talkback” Input: Accessed via the ATV calling channel 144.750MHz FM/Vertical, CTCSS 103.5Hz.
- Streaming: GB3OO will also stream its output to the BATC web site as well as offering a stream input.