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Old 4th Jul 2019, 9:32 am   #5
dazzlevision
Dekatron
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 3,622
Default Re: A question about overhead phone-lines.

Quote:
Originally Posted by lesmw0sec View Post
You also used to see odd little rectangular boxes on the poles which I was informed, contained inductances to compensate for line capacitance.
Loading (or Heaviside) coils. They maintained a reasonably flat line circuit response over the 300-3400Hz range.
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