Interactive toolkit
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NATO alphabet, numbers & codes.
Learn the NATO alphabet, practise number pronunciation and explore ten-code examples.
Open the radio toolkitRadio communication training
Confidence. On air.
From radio history to your next call. Build the knowledge to use your radio with confidence.
10 modules · 66 minutes · Free · Learn at your own pace
- 10focused modules
- 66 minof video training
- 15assessment questions
- 80%to earn your certificate
Course preview
The history of radio communication.
Before radio, there were drums, beacon fires and flags. Watch Anthony explain where it all began.
How the course works
- Watch the 10 modules66 minutes of video. Watch in any order, on any device.
- Take the assessment15 questions. It opens once you've watched all 10 modules to the end.
- Get your certificateScore 80% or more to pass, then add the certificate to your LinkedIn profile.
Free preview
Meet your presenter.
Anthony presents all 10 modules. Press play to get a feel for the course before you start.
The course
The 10 modules.
66 minutes of video with Anthony. Watch in any order and pick up where you left off on any device.
Start with module 01- 01Reaching people you can’t see5:02
- 02How a radio actually works6:43
- 03The birth of wireless7:21
- 04Radio goes to war4:57
- 05Where the phonetic alphabet came from8:10
- 06Numbers, time and the language of the net5:55
- 07Radio discipline7:35
- 08Radio and the security operation7:07
- 09The kit, looking after it and the law7:11
- 10Putting it together and where it goes next5:51
Complete the course
Certificate of completion.
Pass the 15-question assessment with 80% and earn your OnSiren certificate.
- A personalised, downloadable certificate
- Your OnSiren completion badge
- Add your achievement to your LinkedIn profile
(opens the full-size example in a new tab)
On your LinkedIn profile
Guides & practice.
Downloadable guide · PDF
Radio communication guide.
Keep the course essentials in one place with the OnSiren radio communication guide.
Download the guidePocket references · PDF
Cheat sheets for your shift.
One page for the NATO alphabet. One for radio numbers and ten-codes.
Get on the network with the OnSiren app
Talk to the officers around you, raise an alert in one tap and start every shift with a brief from Alpha One.
Install the app
One app for every SIA licensed officer in the UK. Free on iPhone and Android.
- Scan the code or tap your storeTap your store below
- Verify your SIA licence
- Claim your call sign and go on air
Reserved a call sign before launch? Sign up with the same phone number and it is waiting for you.
