How about a character shift of only 30? Didn't the SETI article indicate that the Wow signal was only a 30 (unknow unit of measure) deviation from the standard background noise at its highest point? May not have anything to do with it, who knows.
U=30 and that was only the highest measured signal (30 time of normal deep space noise).
that dont mean it isnt more after 30...
another idea is: CHANEL NUMBER (2 digit VERTICALY)
here it means the first colum (verticaly), but since we only have 1 digit veticaly, maybe we need to find the 2nd colum?
and in original there are two, which build up the channel number!