pdf 57Feb BLR P48 Tone Ringer Popular
By Anonymous 465 downloads
57Feb_BLR_P48_Tone_Ringer.pdf
Bell Laboratories Record, February 1957. Field Trials in Americus, GA and Crystal Lake, IL. Contributed by Chuck Hensley.
New User?
Read the articles under "Introduction" in the black menu bar above.
Recent Contributors
Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.
Please send a file to add your name to this list!
Who's online
We have 1519 guests online