OnAirScreen

On-air lamp for broadcast studios

OnAirScreen

The studio display for on-air status, timers, audio meters, and clock — fullscreen on the monitor, controlled from keyboard, browser, Stream Deck, mixer GPI, MQTT, and your existing broadcast stack.

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OnAirScreen main view: stereo meters, mic timer, ON AIR LED, digital clock, weather widget, and NOW line
Main view — meters, ON AIR, clock, AIR timers, and weather at a glance.

Key features

At a glance in the studio

OnAirScreen replaces a classic on-air lamp with a full studio display — without losing the look presenters and engineers rely on during a show.

Studio display

Four status LEDs, four AIR timers, a digital or analog clock, plus NOW, NEXT, and WARN — all on one fullscreen monitor.

Audio meters

L/R, programme LUFS, or both. dBFS, dBTP, BBC PPM, and EBU R128 with I+LRA. Source: local sound card, Axia Livewire or AES67 compatible — including TOO LOUD and silence detection.

Remote control

Browser web UI including settings, Bitfocus Companion, MQTT with Home Assistant, HTTP, UDP, and OSC. REST API for your own integrations.

Time sources

Local clock, NTP, software PTPv2 (IEEE 1588-2008), or SMPTE LTC. Display time follows the studio reference — without changing the OS clock.

Raspberry Pi GPIO

Mixer GPI via optocoupler to LEDs and AIR timers — up to eight inputs. Included in the Raspberry Pi binary and SD image.

Your branding

Logo, colours, labels, and station name. Supports 4:3, 16:9, and 16:10 so the screen matches the monitor and the station.

Control

Browser, Companion, Stream Deck

Drive LEDs, AIR timers, NOW/NEXT, loudness, and all settings from where you sit — in the browser, in Bitfocus Companion, or on the Stream Deck itself.

Elgato Stream Deck with OAS keys in a radio studio: MIC, ON AIR, LUFS, and timers, with mixer and on-air lamp in the background
Stream Deck at the desk — MIC, ON AIR, LUFS, and timers on the keys.
OnAirScreen Remote Control in the browser: live status for LEDs, AIR timers, silence, loudness I+LRA, and NOW/NEXT plus control panels and settings
Browser web UI — live status, control, and settings with no extra software.
Bitfocus Companion Buttons view with the OAS page: MIC, timer, and ON AIR keys plus LUFS readout
Bitfocus Companion — OAS page with live times, LUFS, and LED keys.

Gallery

In the studio

OnAirScreen in radio studios, podcast rooms, and TV galleries — from the fullscreen monitor behind the glass to the clock in the control room.

OnAirScreen on a studio monitor at WILK-FM: digital clock, four mic timers, and status LEDs
OnAirScreen on the studio monitor — clock, mic timers, and LEDs readable from across the room.
Radio control room with three monitors, mixing desk, and OnAirScreen clock with meters on the left screen
In the radio gallery: OnAirScreen sits beside automation and dashboards.
Radio studio with digital mixer, three monitors, and OnAirScreen as a wall clock with station logo
Wall display in the on-air studio — clock and branding for everyone in the room.
Over-the-shoulder view in a podcast studio: video session on top, OnAirScreen clock on the lower monitor
Podcast setup: OnAirScreen as the studio clock under the video feed.
Podcast studio with broadcast microphones, wood-panelled wall, and OnAirScreen clock on the lower monitor
OnAirScreen in a podcast room — clock and station look on the lower screen.
Podcast table with four microphones; OnAirScreen clock and station logo on the wall monitor
Round-table show: OnAirScreen on the wall, visible to every guest.
Radio control room with Airlite mixer, broadcast microphone, and OnAirScreen on the studio monitors
Classic radio desk — OnAirScreen next to the playlist and mixer.
TV gallery with multiview monitors, mixing desk, and OnAirScreen countdown on the wall
TV gallery: OnAirScreen as a countdown above the multiviews.
Camera rig with teleprompter and OnAirScreen timer in a television studio
On set: OnAirScreen as a timer on the camera rig.
Talk studio with a white table, broadcast microphones, and a red on-air lamp on the wall
Talk format in a bright studio — on-air status visible to host and guests.

Features

Everything included

OnAirScreen is built for daily on-air use: visible in the studio, driven from the control room, and ready to plug into the workflow you already have.

Display and branding

  • Station name, slogan, and station logo
  • Instance name (e.g. Studio-1) to tell several screens apart
  • Custom colours for LEDs, clock, and text
  • Monitor aspect ratios 4:3, 16:9, and 16:10
  • Digital clock, analog clock faces (Numbers, Studio, Railway, 24h), and text clock
  • Static or blinking colon in digital clock mode
  • Bundled Roboto and Noto Sans fonts
  • Weather widget (OpenWeatherMap)
  • Fullscreen with hidden mouse cursor — ready for a dedicated studio monitor
  • Double-click toggles fullscreen; right-click menu for Settings and Quit

LEDs and AIR timers

  • Four status LEDs (ON AIR, PHONE, and more) with their own colours and labels
  • Autoflash and timed flash (20 seconds)
  • Left-click on LEDs and AIR timers toggles them (same as the hotkeys)
  • AIR1 microphone and AIR2 phone stopwatches
  • AIR3 radio timer: count-up, countdown, and top-of-hour to the next full hour
  • AIR3 shows ▲/▼; TOTH label is configurable
  • AIR4 stream timer
  • NOW, NEXT, and WARN text lines
  • Warning priorities (NTP, normal, medium, high)

Audio

  • Layouts: stereo L/R, programme LUFS, or both
  • Programme LUFS (EBU R128): momentary M, short-term S, optional integrated I + LRA
  • Sources: local sound card, Axia Livewire or AES67 compatible (SAP or pasted SDP)
  • L/R display units: dBFS, dBTP (true peak), BBC PPM
  • LUFS references: EBU R128, ATSC A/85, AES −16/−18, or custom
  • Peak hold, solid or bargraph style, adjustable meter width
  • TOO LOUD warning or LED trigger from a dBTP threshold
  • Silence detection with optional WARN, MQTT/HTTP boolean, and HTTP GET

Time sources

  • Local system clock
  • NTP check with a warning when time drifts
  • Software PTPv2 (IEEE 1588-2008)
  • SMPTE LTC via Leo Bodnar LBE-1110 or local audio decode
  • NTP, PTP, and LTC do not change the operating-system clock

Remote control and integration

  • Keyboard and hotkeys, including the OAS USB keyboard
  • Browser web UI: live status, settings with optional PIN, presets, dark mode, Add to Home Screen
  • HTTP commands and REST endpoints /api/status and /api/command
  • UDP API (default port 3310)
  • MQTT with Home Assistant autodiscovery
  • Bitfocus Companion: LEDs, AIR timers with live time, NOW/NEXT/WARN, silence, I+LRA
  • OSC as an additional option

Raspberry Pi GPIO

  • Up to eight GPIO inputs for mixer GPI
  • Optocoupler module (PC817) for 5–24 V, or dry contact to GND
  • Map freely to LEDs, AIR timers, reset, or a custom API command
  • Level or edge trigger, debounce in Settings
  • Raspberry Pi only — binary and SD image

Studio workflow

  • Presets: save and load complete configurations as profiles
  • Event log for LEDs, timers, commands, and system events
  • Rotating logs and crash reports, folder in the About tab
  • Configurable log level, including a command-line override
  • Tooltips on every settings control
  • IP address display on NOW/NEXT via hotkey
  • Reboot, shutdown, and quit via API

Platforms

  • Windows, macOS, and Linux — ready-to-run builds from the shop
  • Raspberry Pi OS binary, including GPIO for mixer GPI
  • Raspberry Pi SD image: flash and go
  • Fits into existing studio setups

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For your operating system

One license covers one PC or one Raspberry Pi. Shop builds are activated on the computer. If this activation does not fit your use case, contact support. We will work out a custom solution. Ready-to-run builds from €29. The Raspberry Pi SD image ships with OnAirScreen already installed. All licenses live in the OnAirScreen category.

Windows

OnAirScreen for Windows

Ready-to-run for studio PCs on Windows.

€29

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macOS

OnAirScreen for macOS

For Mac mini and iMac in control room and studio.

€29

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Linux

OnAirScreen for Linux

For Linux workstations in broadcast operations.

€29

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Raspberry Pi

OnAirScreen for Raspberry Pi OS

Binary for Raspberry Pi OS — compact behind the monitor, including GPIO for mixer GPI.

€29

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SD image

Raspberry Pi SD-Card Image

Preinstalled: flash the image, plug in, go on air. GPIO for mixer GPI included.

SD image

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Category

All OnAirScreen products

Windows, macOS, Linux, Raspberry Pi, and SD image in one place.

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Documentation

Read more

Manual and wiki — for install, API, and day-to-day studio use.

Wiki User Manual User Manual (PDF) Bedienungsanleitung (DE) Bedienungsanleitung (PDF) Shop

Clock faces

Digital, analog, studio, railway, 24h

Choose a clock face in Settings: LED digital, classic analog, numerals, white studio, railway station, or 24-hour cream. The rest of the studio display stays the same.

OnAirScreen with the digital LED clock, orange seconds ring, meters, ON AIR, and weather
Digital — LED digits and a seconds ring around the time.
OnAirScreen with the classic analog clock: white ticks and hands, no numerals
Analog — classic ticks and hands, no numerals.
OnAirScreen with Analog Numbers: black analog face with numerals 1–12
Analog Numbers — classic analog face with 1–12.
OnAirScreen with Analog Studio: white face, black ticks, and numerals 1–12
Analog Studio — white face with black 1–12.
OnAirScreen with Analog Railway: white station clock and a red ring second hand
Analog Railway — station clock with a red ring second hand.
OnAirScreen with Analog 24h: cream face, black 1–12 and red 13–24
Analog 24h — cream face with 1–12 and 13–24 (smooth or ticking second hand).

Ready for on-air

OnAirScreen ships as a ready-to-run build for Windows, macOS, Linux, and Raspberry Pi. Start with the edition that matches your studio.

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