Todo's sorted by priority:

BNS
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BNC
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(1) BNC has a problem when the observation update rate is > 1Hz. Records get
mixed then in the RINEX files. A 10 Hz stream to test the situation is 
available from GFZ caster 139.17.3.112:4080 through stream A17H.

(2) GW: Keep an eye on www.igs-ip.net/PENC0.