No band gets
claimed twice.
Centinel DX coordinates in real time which operator is working each band and mode, keeps a duplicate-free log, and shows the activity to anyone who wants to follow it — for any contest or activation you run.
One app, three ways to see it
Centinel DX is the platform where you run your amateur radio contests and activations: each operator claims their band and mode before transmitting, the system prevents collisions, and everyone — inside and outside your organisation — can follow what's happening live.
One slot, one operator
The band/mode matrix locks each combination the moment someone claims it. No one else can take it until it's released.
No repeated contacts
Every QSO is checked against the activity log instantly: if that callsign has already been worked on that band and mode, the system warns you.
Visible without signing up
Anyone can check which stations are active right now in a contest, with no account or password needed.
Built for everyone involved
From the person organising it to someone who just wants to follow the contest from home.
Full control, no spreadsheets
- Create as many activities as you need, each with its own bands, modes and logging rules.
- Assign operators from your usual roster — same callsign and password across every activity, no need to create new accounts each time.
- Step in live when needed: force-release a band/mode or fix a mistaken QSO.
- Download the full activity log in ADIF or Cabrillo as soon as it ends.
- Check participation stats by operator, band and mode.
Claim your slot and get on the air
- Claim your band and mode with one click — no one else can take them while you're working it.
- Post your frequency to the DX Cluster without leaving the app.
- Log every contact in seconds, with an automatic warning if that callsign has already been worked.
- Export your own log whenever you need it, in ADIF or Cabrillo.
Live activity, no sign-up needed
- Check which stations are active right now, on which band, mode and frequency.
- No account, no password — just open the contest link.
- Follow the latest activity as the contest unfolds.
One annual price, no limit on contests
Run as many contests and activations as you like throughout the year. The plan only changes depending on how many operators you need per contest.
- Unlimited contests and activations
- Up to 5 operators per contest
- Real-time band/mode matrix
- Log with duplicate checking
- ADIF / Cabrillo export
- Public view, no sign-up
- Everything in S5
- Up to 10 operators per contest
- Multiple admins
- Advanced statistics
- DX Cluster posting
- Priority email support
- Everything in S9
- Operators per contest tailored to you
- Multiple organisations under one login
- Priority support and guided setup
Accounts are set up by email: write to info@centineldx.com, we'll send you a form, and we'll activate the organiser account and each of your operators' accounts.
From request to your first contest, in three steps
There's no self-service sign-up: every account is activated by hand to make sure organisers and operators are set up correctly from day one.
Write to us
Email info@centineldx.com telling us which plan you need and which contest or activation it's for.
Fill in the form
We'll send you a short form to set up the organiser account and each operator on your team.
Log in and coordinate
Once the accounts are active, log in at login.centineldx.com and create your first contest.
Put your next contest under watch
No band collisions, no duplicate QSOs, with live tracking for anyone who wants to follow along.