[Scan-DC] train signaling

[odyslim at comcast.net]

 Hey Guys.

 I live in Odenton right at Patuxent road. I have a long, clear
signal both north and south. 

 I wonder if anyone would know the freqs for those tracks.

 What got my interest is an increase if signaling with the air horns.
Saturday and Sunday this weekend, there have been 2 horn blasts
ever minute or so. I really didn'd pay it any mind until this
morning it was still going. So, I took a ride down to the tracks
and could hear the horns every minute or so and an occasional,
slow moving train. My guess is they must be doing some repair
work or something???  I did not see any equipment.