[BC] "live" feeds

[DHultsman5 at aol.com]

In a message dated 4/29/2008 1:37:56 PM Central Daylight Time,  
Bob at Broadcast-Devices.com writes:

Mike's  comment about the IFB feed is a good one. In fact, you could use the
same  pair for IFB if a second one isn't available. If you use center  tapped
transformers a D.C. voltage can be used to control a "simplex"  circuit
whereby a relay can be used to switch between send and receive.  

Bob Tarsio



*******************************
 
For many years we used a "Dry-pair"  telephone line to most of our  remotes 
to allow talk=back and cue to the announcer at the remote site.  We  always 
used a d.c. simplex to ground with a button at the remote location to  allow the 
remote announcer to start the first cartridge machine of a stop set.  Later 
moved the talk back to FM SCA.
 
Later we actually used two buttons with gating diodes for + and -   keying to 
ground to all the starting of a routine cartridge containing "Bits  & sound 
effects".
 
Dave



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