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I'd recommend putting a "T" in the line and checking the voltage off the "T". That way you see the actual voltage during use. 12V sounds a bit low, but should be high enough, but if it gets lower than that under load, it may not work.
The fact that you didn't get anything when you rotated 90 deg sounds like it isn't switching or that the lnbf just isn't getting enough voltage to work. You might try rotating 90 deg, but changing the setup so that it thinks you have a regular lnb rather than an lnbf. That way it would put out 18V so the lnbf would be working. Not a cure, but might verify that you have a voltage problem. I don't have a 920, so I don't know if it has an adjustment for lnbf voltage or not.[/quote]
OK. Here are the voltages measured right at the LNB. I made up a coax jumper, stripped away some insulation.
With the DSR920 set up for C/Ku LNBF:
X0-12 (horiz_left) 11.62 Volts
X0-13 (vert_right) 19.2 Volts
With the DSR920 set up for C/Ku LNB
X0-12 19.2 Volts
X0-13 19.2 Volts
Think I'm going to try a few 90 deg rotations and see what comes up.
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