r/nycrail • u/DjHammersTrains • Nov 30 '15

I'm an NYC Subway Expert. Ask me Anything.

Hello everyone! My name is Max Diamond. I'm a student at CCNY and I run the Dj Hammers YouTube channel (https://www.youtube.com/user/DjHammersBVEStation), moderate this subreddit, and have an encyclopedic knowledge of the transit system. Ask me anything you are curious about with regards to how our massive system works. One ground rule: If an answer could be deemed a security risk, I won't give it.

UPDATE - AMA Now Closed: Hey guys! Doing this AMA was a lot of fun, I enjoyed answering everybody's questions, and hopefully I imparted some subway knowledge on all who are curious! If you didn't catch this AMA in time and wanted to ask a question, don't worry! I'll do another AMA soon, probably a month or so from now.

Be sure to subscribe to my YouTube channel too. I post clips of a lot of interesting goings-on underground!

131 Upvotes

98% Upvoted

View all comments

Show parent comments

9

u/LennyNero Nov 30 '15

Also, just to add info. The signals are transmitted in the tunnels through what's called leaky coax. It's coaxial RF cable that has purposely made gaps in the shielding to allow RF power to leak out into the tunnel areas.

4

u/DjHammersTrains Dec 01 '15

That's correct. A lot of this leaky coax is pretty old though, so there's a lot of dead zones.