Helios Broadcasting Helios — Helios Broadcasting Helios
Helios Broadcasting Helios
🇬🇧 Helios

Broadcasting Helios

1977 – 1979

Notable users

Capital Radio, London (24-track stereo + quad), Mainos TV, Finland (multiple consoles, incl. 16-ch on-air + 10×2 TV sound mixer), Télémetropole / Channel 10, Montréal (32 in / 16 group / 24-track), Hamburg ABS, West Germany, British Independent Broadcasting Authority (IBA)

Technical specs

Channels10 – 32 (per install)
LayoutBroadcast / on-air
Groups8 – 24
EQ3 or 4-band parametric
Era1977 – 1979
ApproachSwettenham custom-build engineered for broadcast workflows
Common configCustom per broadcast workflow — music recording, on-air, music-for-picture "sweetening"
FeaturesBuilt-in Dolby NR (24 tracks), solo-in-place, pre-listen, VCA grouping, Studer-specific track-mode selection (Capital Radio)
DistributionUK direct from Helios Electronics Ltd, Browells Lane, Feltham; Canada via Radio Service Inc, Montréal

Market value

(very rare; broadcast-era installs, values vary)

Rarity

Very rare

"Broadcasting Helios" 1977-79 campaign TV + radio on-air desks Music-for-picture / "sweetening" rooms Built-in Dolby noise reduction for 24 tracks

The final Helios chapter under Swettenham was a deliberate move into broadcast — TV studios, radio stations, and the music-for-picture rooms that television and film increasingly needed. Capital Radio in London took a 24-track stereo desk fully prepared for quad output, with four compressors built in and Studer-specific track-mode selection. Mainos TV in Finland received multiple consoles, including a small 10-input two-output TV sound mixer and a 16-channel on-air desk. Hamburg ABS, the British Independent Broadcasting Authority, and Télémetropole in Montréal — Channel 10, French Canada's largest commercial broadcaster — all installed Helios desks for multitrack music recording and "sweetening" rooms. Same Swettenham custom-build approach, but engineered for broadcast workflows: built-in Dolby for 24 tracks, solo-in-place, pre-listen, VCA group control.

Vintage Advertisements

Helios at Télémetropole Montréal (Channel 10) — 32 input / 16 group / 24-track, 3-or-4-band parametric EQ, LED PPM + VU metering, built-in Dolby for 24 tracks, solo-in-place + pre-listen, fully VCA group wired — Recording 1977-12
Helios at Télémetropole Montréal (Channel 10) — 32 input / 16 group / 24-track, 3-or-4-band parametric EQ, LED PPM + VU metering, built-in Dolby for 24 tracks, solo-in-place + pre-listen, fully VCA group wired — Recording 1977-12 (1977)
Broadcasting Helios — Nordic 110 + Mainos TV "Tre" 30-input grouping desk + Hamburg ABS + British IBA — invitation to discuss new Nordic Broadcast Desks — Studio Sound 1978-03
Broadcasting Helios — Nordic 110 + Mainos TV "Tre" 30-input grouping desk + Hamburg ABS + British IBA — invitation to discuss new Nordic Broadcast Desks — Studio Sound 1978-03 (1978)
Broadcasting Helios — Télémetropole Montréal detail (Channel 10, French Canada's largest commercial broadcaster — multitrack music + mixdown + audio sweetening for video tape sound, common purchase with Mainos TV + Capital Radio) — Studio Sound 1978-05
Broadcasting Helios — Télémetropole Montréal detail (Channel 10, French Canada's largest commercial broadcaster — multitrack music + mixdown + audio sweetening for video tape sound, common purchase with Mainos TV + Capital Radio) — Studio Sound 1978-05 (1978)

Notable Recordings

  • TV + radio broadcast productions; music-for-picture, "sweetening" rooms, and on-air programming

Studios

  • Capital Radio, London (24-track stereo + quad)
  • Mainos TV, Finland (multiple consoles, incl. 16-ch on-air)
  • Télémetropole / Channel 10, Montréal (32 in / 16 group / 24-track)
  • Hamburg ABS, West Germany
  • British Independent Broadcasting Authority (IBA)