Not sure about the frequency of the Shaw Direct 299 preview channel but I do know the L-band IF frequencies for the following unencrypted channels:
977.75 - CTV Two Alberta
1086.75 - The Shopping Channel
1208.75 - CKUA radio
1300.25 - Knowledge Network
1300.25 - Legislative Assembly of British Columbia
1343.75 - AMI audio
All these channels are off the Anik F1 107.3W satellite.