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Sep 10th, 2010 at 3:12pm
Check that your satellite TV equipment is working properly.
Find a good signal and peak up in azimuth, elevation and polarisation. Change the polarisation voltage using the satellite TV receiver set top box and that signal should disappear. Turn the feed manually by 90 deg and the signal should reappear. This test shows that your receiver can change the LNB from one polarisation to the other and also that both polarisations within the LNB work.
Very bad polarisation alignment may cause most channels to vanish due to cross-pol interference. The only workable channels may be the few with no, or little, cross-pol traffic present. Adjust your polarisation by calculaton or by drastic misadjustments either way and halfing the difference.
Best regards, Eric.
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