Chaps.
Modern broadcast transmitters can be set to reduce the carrier when there is
no mod, to save power, or raise the carrier to preserve a silent background
in the face of interference.
As for compression, the BBC have used Optimod for years as much as 16dB on
AM, who told you they didn't?
Just for the record the BBC don't operate these transmitters anymore, it's
Crown Castle who do. Anyone out there in Crown Castle who can tell us how
Droitwich is set up? (or is it just bust...?)
Cheers
Dave
G3YXM.
----- Original Message -----
From: "Alan Melia" <[email protected]>
To: "LF-Group" <[email protected]>
Sent: Tuesday, July 30, 2002 10:08 PM
Subject: LF: Droitwich Carrier
Hi all, I was fascinated by Dick's measurements I decided I would swing
the
radio onto Droitwich and switch through the filters.
The measurement was made at 2015z tonight Tuesday.....a science program
about George Best's liver!! So the modulation was all male speech.
|
