I am using the
qph-031 invacom with a ultra receiver with
sadoun 4 way disqec switch with no problems. have used it in usals mod and disqec mode for the
stab 100 motor no problems. are you putting the disqec between the motor and receiver or th motor and lnb. mine is between the motor and lnb. its weather proof so no problems mounting at dish. see
www.sadoun.com for a 4 way disqec switch with weather cover.

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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
I Like To Shop at Sadoun Satellite Sales.www.sadoun.com