"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by RB, March 22, 2017, 03:01:28 PM
Quote from: RB on March 23, 2017, 11:50:14 AMThanks for the replies. I started out to build a simple crank board. but I don't have any drop parts, so no rattle.I have to use lites. so, it got more complicated.Thanks, Unbeldi, for the doc.there is more info there, than I have found so far. so more reading.I have a pretty good handle on crank/two wire connectivity.However, finding the correct parts to make it work...well...So, I decided a common batt board would be easier to work with...I say easier...it is a bunch more complicated! but, I will get there.can you tell me how, if the sub phone runs locally on about 3-5 volts, how did they kick that down on a common batt board?or was the 24 volts common to all sub phones as well as the board?
Quote from: Victor Laszlo on March 23, 2017, 07:15:39 PMOriginally, and historically, LB telephones did not require or use a switchboard. The phones were installed in parallel on a pair of wires (originally one wire) and were used to intercommunicate among the members of the party line, generally farmers in a very rural environment.
Quote from: RB on April 07, 2017, 11:50:19 AMHi All...Still at this switchboard project. Thanks for all your help thus far, the project progresses.
QuoteThis is the next part of it. A 20-A repeating coil, wired through a 4 pole 2 throw rotary switch.As I understand it, this pic shows how to wire a Repeating coil for CB or LB application.I will be installing this in the rear of the board.Please take a look at it, and tell me if I am on the right track.also, I see caps used for various reasons, too, anywhere from 1/2 mf to 2 mf.Could you explain to me the reason you would use a 1/2, 1, or a 2mf cap in this application?I assume, it has to do with the complete circuit, board and sub set ... but not sure.