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Cool WE 500 development info about the "equalizer" circuit

Started by OldPhoneUser, March 22, 2018, 02:05:20 AM

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OldPhoneUser

March 22, 2018, 02:05:20 AM Last Edit: March 22, 2018, 04:07:16 AM by TelePlay
In researching sidetone/antisidetone, I found this and other articles by Doug Kerr.  I did a search for doug kerr here and didnt see anything so sharing it here:

WE 500 "equalizer" info and history:
http://dougkerr.net/Pumpkin/articles/WE_500D.pdf

Cool piece on manual switching (it's more complex than you may think), "party" line history and more:
http://dougkerr.net/Pumpkin/index.htm#Telecom

markosjal

#1
March 22, 2018, 02:15:53 AM
The equalizer is good . It really helps me to understand. I believe that is what is  sometimes called a "balancing network"?
Phat Phantom's phreaking phone phettish

OldPhoneUser

#2
March 22, 2018, 02:20:25 AM Last Edit: March 22, 2018, 04:09:39 AM by TelePlay
Quote from: OldPhoneUser on March 22, 2018, 02:05:20 AM
In researching sidetone/antisidetone, I found this and other articles by Doug Kerr.  I did a search for doug kerr here and didnt see anything so sharing it here:

WE 500 "equalizer" info and history:
http://dougkerr.net/Pumpkin/articles/WE_500D.pdf

Cool piece on manual switching (it's more complex than you may think), "party" line history and more:
http://dougkerr.net/Pumpkin/index.htm#Telecom

This one is about party line ringing BUT covers really well, how ringing works!
http://dougkerr.net/Pumpkin/articles/Ringing-multi-party.pdf
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