Hi Sundoan,
You should not rely on the satellite signal meter. It won't work. I do not know why but i had the same problem with you. When i connected the signal meter with the receiver and the LNBF, i did not hear any sound or anything came out from this device at all.
The
VTV4 channel is on Intelsat American 5 ( 97 W), not AMC 4. The only Vietnamese channel on AMC is VPTV (
http://www.radiohaingoai.com/).
You should consider about the LNBF Polarization Tilt degree too. I don't know how to set it up because i am using a motorized system. Many people in here can help you out. Good luck.
