Post #836104

2025-09-17 18:32 UTC

Oh my goodness. I think this is the only place on the internet nerdy enough to help me locate this info. My parents met on a what was effectively an unofficial chat room hosted by capital radio (London). In the 1980s, Capital Radio used to leave their switchboard open at night (unintentionally, they didn’t realise it was happening) and people would call the regular radio phone and just end up in what was effectively a giant group call for Londoners late at night. (I say Londoners due to the reach of the radio rather than the phone line itself, people wouldn’t know the number unless they listened in). I understand they changed how the phone system worked later in the 80s and closed this loophole off. So what I’m after is… - the nature of the switchboard that allowed this to happen - edit now answered - what change would have blocked this later on - edit now answered - any historic info on the period it was left open, or personal accounts - still pending, trying other social media too for this #radio #capitalradio #phreaking #VintagePhoning #1980s #retrochatroom

Replies (13)

@leymoo@hachyderm.io 2025-09-17 20:13

You might be amused to know that my mother is now deeply bored of the phone kit and phone system details I am showing her (please don’t stop sharing it, I’m loving it) but I suspect my dad would be bored instead about the radio and human interest aspect of this (and would also be deeply squeamish to talk in detail about meeting my mother, someone he broke up with over 30 years ago) so it balances out l reckon #radio #capitalradio #phreaking #VintagePhoning #1980s #retrochatroom

Open ##2027471
@leymoo@hachyderm.io 2025-09-17 20:38

My mother would like to clarify for the record that a friend got her onto the phone line, she was “too cool” for the fully licensed and legal capital radio and listened to mainly pirate radio, notably Horizon Radio #radio #capitalradio #phreaking #VintagePhoning #1980s #retrochatroom

Open ##2027472
@401matthall@mastodon.xyz 2025-09-17 19:04

@leymoo This is, by far, the coolest thing I've heard all day. Thanks for sharing! I hope you find and share any info you find about this.

Open ##2027473
@mark@mastodon.fixermark.com 2025-09-17 19:07

@leymoo I sadly do not have this information, but this story makes me smile because I have a pair of acquaintances (one Irish, one American) who met online in a Christian chat-with-avatars room back in the early aughts (one of the early experiments in that kind of thing; the avatars were like Final Fantasy icons and the world was a tiled grid). They eventually wed. ... they were two atheists who had logged in to gawk at the existence of the thing.

Open ##2027488
@Theresacityinmymind@mas.to 2025-09-17 19:12

@leymoo In the US, that was called a party line. To reduce costs, a bunch of people would share a single line that only one person would use at a time out of courtesy, BUT anyone sharing the party line can actually listen in or talk if they want to. Alfred Hitchcock Presents looks like it was a US TV show. In 1960, there was an episode called party line. The alternative is a private line.

Open ##2027492
@dzwiedziu@mastodon.social 2025-09-17 19:13

@leymoo Try to get in touch with the person behind the YT channel “Look Mum No Computer” and “This Museum is not Obsolete”. The latter will probably explain my recommendation (TL;DW: a museum for musical implements and telecom equipment in the UK from days past).

Open ##2027502
@leffe@social.linux.pizza 2025-09-17 19:29

@leymoo Cool! The same thing happened in #Sweden in 1982, when people discovered some vacant numbers acting like conference calls. They became popularly known as "hot lines". The national phone company subsequently provided some official numbers for the purpose, until 1995. People would arrange to meet, like your parents did, and there was even a group of more than 1000 youth that congregated in a park in Stockholm, leading to a clash with the police. You can feed this link to a translator of choice: https://sv.wikipedia.org/wiki/Heta_linjen_%28Sverige%29

Open ##2027504
@lpbkdotnet@mstdn.social 2025-09-17 19:45

@leymoo Early 80s… likely still strowger equipment The details get a bit tricky, but a fault could lead to equipment not properly being marked as busy, so subsequent callers end up connected to the same pair Capital would have had dedicated main exchange equipment, and its own PABX on-prem, which complicates things I expect the “night service” function on the PABX put a fault on the busy marker wire I know a couple of BBC switchboard ops from that time who might be able to confirm… I’ll ask!

Open ##2027507
@alicemcalicepants@ohai.social 2025-09-17 19:49

@leymoo @vfrmedia this sounds like something you might know about? 😁

Open ##2027518
@alatartheblue@polymaths.social 2025-09-17 19:50

@leymoo I can't answer your question, but I'm going to drop this link to info about the Mojave Phone Booth here, because this thread seems to have turned into a "remember this similar thing" place, and I like the lore. https://en.wikipedia.org/wiki/Mojave_phone_booth

Open ##2027525
@meganL@mas.to 2025-09-17 19:54

@leymoo If no one here has an answer, it sounds to me like something the older readers of 2600 would know about. Perhaps if you write them a letter, they can broadcast the question. https://www.2600.com/magazine/

Open ##2027527
@DodoTheDev@front-end.social 2025-09-17 20:27

@leymoo @Lemlems I'm not sure I can be much help, but there's a group on Facebook for new/old telephone engineers (I used to be on it). I am willing to bet someone on there would have answers to some of your questions. I can't remember the exact name of the group, but you had to prove you were an engineer by answering a simple question (to keep out bots). I think it was just "why do you want to join this group?". But if its a technical question (dont think it is), ask me.

Open ##2027532
@LaF0rge@chaos.social 2025-09-17 20:48

@leymoo I would suggest to reach out to THG (Telecommunications Heritage Group) in the UK, see https://thg.org.uk/

Open ##2027533