On 04/07/2024 18:16, Roderick Stewart wrote:
On Thu, 4 Jul 2024 16:25:56 -0000 (UTC), Tweed
<[email protected]> wrote:
JMB99 <[email protected]> wrote:
There was an interview a short time ago on BBC News channel with someone >>> in Beirut.
There did not seem any delay?
Just wondering why not when you get a delay on interviews to people even >>> if they in the UK.
Prerecorded with the delays edited out?
Maybe sometimes they use can cabled links but sometimes a satellite
link is the only type available, or it's cheaper?
The satellite delay to a geostationary satellite is only about 1/4
second - 1/8 going up and 1/8 coming down to another part of the earth
that is within range.
About 36,000 km which 36 * 10^3 * 10^3 = 3.6 * 10^7 metres. Speed of
light 3 * 10^8 m/s, so delay is 0.12 seconds one way or 0.24 seconds
round trip.
But "satellite link delays" seem to be much longer than that. I imagine
most of the problem is digital encoding/decoding delays, which are going
to be fairly constant no matter whether the signal is going by landline
or satellite.
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