I believe NIU is Network Interface Unit, and STU is Set-Top Unit. Maybe the first frequency is the upstream, and the second is downstream? Regards, Tim Hamel In a message dated 5/21/00 11:14:55 PM Pacific Daylight Time, yizgarnoff@OPTUSHOME.COM.AU writes: > If your interested, the 'Work Order From' they left has this information: > RF Levels > NIU/STU 95.25MHz = 10.9, 471.25MHz = 9.3, 555.25MHz=-6.9, 744.25=4.2 > Anyone know what that means?