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30 years ago today: the smokey globe and the 2s

MA
Markymark Meridian (Thames Valley) South Today
And the infamous introduction of the Calendar South opt, "oops we forget about a NICAM circuit" screw up


Oh, do tell us more!


The YTV South opt used the Crosspool relay. Relays were dumb terminals that simply took the whole composite RF feed from their parent (in this case Emley) and retransmitted it. This meant that once the parent started broadcasting NICAM, so would it. So far, so good. Emley started NICAM broadcasts in 1989. However, was it a year or so later? YTV launched the Sheffield opt from Crosspool. The relay had to be modified to take a line feed, rather than rebroadcast Emley. Overnight the NICAM signal died. Between them YTV and the IBA had forgotten about NICAM. I know the person who phoned Bruce Randell at the IBA to report it. To be fair they leapt into action very quickly to correct the problem.

YTV also got wrapped over the knuckles over Emley's NICAM test transmissions. They experimented with pseudo stereo effects, the sort of thing where you split a mono signal into LF and HF and feed each to left and right channels. It's horrible and it ain't proper stereo!

Edit: Steve beat me too it 😎
Last edited by Markymark on 23 February 2021 6:34am
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Avatar credit: © BBC, ITA, BREMA 1967
EL
elmarko Central Reporting Scotland
Not sure I can imagine how that sounds, is there a specific name for that type of method? Wanted to read up on it.

Edit: Also, that NICAM story, A+
MA
Markymark Meridian (Thames Valley) South Today
Not sure I can imagine how that sounds, is there a specific name for that type of method? Wanted to read up on it.


Well, it was called pseudo stereo ! Back then ghetto blasters often employed it to create a better stereo effect from their internal speakers only inches apart.

30 years on, the idea is still being played with, using delays and other tricks

https://soundbridge.io/pseudo-stereo/
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Avatar credit: © BBC, ITA, BREMA 1967

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