Post by Deleted on Aug 29, 2012 22:16:01 GMT
I was traveling northbound from Paddington this morning.
THE CIS was showing '1st Train Harrow and Wealdstone TONE'.
I don't normally go northbound from Paddington so don't know if this is a regular occurrence.
To me tone is a 900Hz sine wave,8dB below peak level showing '4' on a PPM.
I'm sure it means something different on LU,can anyone explain?
Andy
THE CIS was showing '1st Train Harrow and Wealdstone TONE'.
I don't normally go northbound from Paddington so don't know if this is a regular occurrence.
To me tone is a 900Hz sine wave,8dB below peak level showing '4' on a PPM.
I'm sure it means something different on LU,can anyone explain?
Andy
