13-03-2013, 03:19 PM
(13-03-2013, 03:02 PM)Mark Hennessy Wrote: Yes, but the Word Service was using really old gear - what would have been considered "legacy" even at the time. Local radio still uses similar stuff in some parts of the country. But anything made post 1980 will be hi-Zin, low-Zout by default, perhaps with options for 600 ohms if they want to sell to people with legacy installations.
Bear in mind I'm talking general studio and broadcast centre kit. It's different in transmitter installations, which are always much longer-lived - and don't get changed operationally like studios.
But take it from me - 600 ohms is a PITA. I don't miss it
I was in the transmitter room at Redruth main transmitter at Four Lanes, back in the mid eighties, the Radio Cornwall stuff was all modern, some stuff was labled Home, Light and Third... The transmitter manager had rigged some emergency cooling for something or other which kept breaking down, it consisted of a standard plastic cold water tank, a ball cock and some bits of copper plumbing! the overun of the main tv transmitter transmission line up to the antennas was coiled under the floor to maintain the matching impedences. Had a chance to climb the mast with him but I declined..
Lawrence.
