Post #2027511
2025-09-17 20:23 UTC
@leymoo lol “sorry” 😂
a friend says:
Capital Radio had a PABX 7, but phone-ins used a completely separate group of lines which were termed on Key and Lamp units (callers who actually got on air were called back on another group of lines).
I can’t think how this would have worked on a normal KLU set-up.
I also have a memory of some sort of late-night chatline which was “official” rather than being something discovered accidentally. But it was a long time ago
Replies (1)
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@lpbkdotnet@mstdn.social 2025-09-17 20:46
@leymoo Capital phone-ins are mentioned (with photos) here: http://www.samhallas.co.uk/repository/journals/Post_Office_Telecommunications_Journal/POTJ%20Vol%2025%20No%204%20Winter%201973-74.pdf The unit with all the switches in the bottom left of the cover photo is the key-and-lamp unit The use of KLUs changes my technical theory, but there are other options. the announcer mentioned in the article may have been switched off or faulty, or multiple keys on the KLU could have been left operated, or something else entirely! This has been quite a fun little technical research jaunt!