pdf C54.912 IA NY Call Box Circuits - Bridged Leased Lines [RCA] Popular

Published on 17 December 2010 By Anonymous 713 downloads

Download (pdf, 734 KB)

Call Box Circuits - Bridged Leased Lines [RCA].pdf

C54.912 IA NY Call Box Circuits - Bridged Leased Lines [RCA]

Mar 49. Also coded F92.310. The call boxes are used to summon messengers from message centers maintained by RCA. Includes addendum Issue A, Dec 49 covering alternate installation method using a floor bunching block..

New User?

Read the articles under "Introduction" in the black menu bar above.

Recent Contributors

Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

Please send a file to add your name to this list!

pdf C54.912 IA NY Call Box Circuits - Bridged Leased Lines [RCA] Popular

New User?

Recent Contributors

Who's online