previous measurement is invalid - due to changing in the alignment from floated table to unfloated table over night we don't know what we really measured.

What we can say is that the beat frequency changed from 181.265MHz to 185.9MHz, so by 4.66MHz for a 0.2K increase of the shield using 1.53V heater voltage.

aligned everything properly, locked both cavities, changed tuning input range to 100kHz and turned heater off. We might stop the new measurement at any time as we got the basic information we need