R stands for right and L stands for left polarity on circular sats.don,t know what lnb you are using if its the one that comes with the M1 system than it is a linear won't get circular sats. also
www.sadoun.com has a chart to help you understand lyngsat.sorry don,t remember the page search arround and you will find it.

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Rainman's Equipment
Undien 4600,DSR 922
Fortec Ultra, Satworks 3618
2 Fortec Mercury II
Fortec Classic NA
8.5' Orbitron polar C Ku dish
8.5' Birdview HH C Ku dish
100cm Fortec dish
90cm Fortec dish
2 DG-240 HH motors
Co Rotor II feed horn
Norsat 8515 C band lnb
Norsat 4506A Ku lnb
BSC-621-2 Lnbf
Invacom QPH-031 Lnbf
Invacom SNH-031 Lnbf
Fortec Fsku-v universal Lnbf
V-Box
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