I just looked again at 137.777 and am getting a
strong signal with clear phase reversals:

In 10 second measurements

  UT                 phase
2015-11-21_21:32:10  122.0
2015-11-21_21:32:20   40.1
2015-11-21_21:32:30   85.4
2015-11-21_21:32:40   55.9
2015-11-21_21:32:50   32.3
2015-11-21_21:33:00  105.8
2015-11-21_21:33:10 -178.8
2015-11-21_21:33:20 -104.2
2015-11-21_21:33:30 -107.6
2015-11-21_21:33:40 -157.9
2015-11-21_21:33:50  -92.8
2015-11-21_21:34:00    9.5
2015-11-21_21:34:10    3.1
2015-11-21_21:34:20    4.0
2015-11-21_21:34:30   28.7
2015-11-21_21:34:40 -104.1
2015-11-21_21:34:50 -160.3
2015-11-21_21:35:00  179.6
2015-11-21_21:35:10 -144.1
2015-11-21_21:35:20 -170.1
2015-11-21_21:35:30   63.5
2015-11-21_21:35:40   27.5
2015-11-21_21:35:50   43.6
2015-11-21_21:36:00   65.3
2015-11-21_21:36:10   58.4

Looks good Joe.  I'll measure the S/N and
suggest a symbol rate.

4K19A is probably not a good code to use, it's
not available on the Windows decoder unless you
start it from the command line.   Try 8K19A.

--
Paul Nicholson
--