On 11.11.15 3:54, hancock4@bbs.cpcn.com wrote:   
   > One of the BMT radio consoles formerly used at Command Center is   
   > on display at NYTM, Brooklyn.  It was part of the "crisis" exhibit.   
   >   
   > Each radio channel key has a bunch of colored indicator lamps associated   
   > with it.  There are also keys marked "voting mute", whatever that means.   
   >   
   > I think when a motorman made a radio call, the cosnole sensed it   
   > and seized a channel and lit a lamp for the dispatcher to answer.   
   > Anyone know how the radios worked?   
   >   
   > Some channels had a single key, but most had two keys.  The keys   
   > themselves may have lit up when in use.   
   >   
   > There were "all call" keys.   
   >   
   > There was a larger key marked 'transmit'.  Originaly painted in red, all   
   > the paint was worn off.   
   >   
   > I believe the system was installed circa 1967.  Before that, crews   
   > had to climb down and use a wayside telephone.  Now they use something   
   > else.   
   >   
   >   
   > There is also a model 28 Teletype, used for messaging to the bus garages.   
   >   
   > Downstairs, car #8013 is on display.   
   >   
   Radios came into use on subway trains in 1971, IIRC.   
      
   I'm sure that many TOs are happy to have the portables, rather than   
   those grey boxes, which weighed a ton.   
      
   Are there any plans to install GSM-R on either the subway or any of the   
   other rail systems in the area?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)