Where's that 144000 come from??
Do not use online calculators! They rarely tell you how the calculation is done, and how they treat significant figures etc. (The one above shows 17 significant digits, but is already wrong after the 4th!)
Lambda = k * c/f = k * 299,792,458/1090,000,000 = k * 0.27504 meters
where k = velocity factor.
So if you don't know how to do this most basic calculation, I really don't think its a good idea trying to design anything using other peoples "values". But hey, physics was discovered through experiments. So whatever works and make you happy, is fine with me.