Posted by Ronnie Budd on June 05, 2020 at 09:11:19 from (184.53.32.30):
In Reply to: What is this posted by John in La on June 02, 2020 at 20:08:23:
Quoting Removed, click Modern View to see
If you are replying to me, I am 69, nearly 70. I was working on these things in 1970, in the Army Signal Corp. The military always had the latest innovations in communications, and had made the conversion to DTMF phones by the second half of the 1970s.
The Stowger stepping switches were still being used in a lot of smaller civilian DCOs in the 1980s. The exchange in my small hometown were still using them. We still had a party line at home well into the 90s.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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