Well,
there is two issues here:

in Doha, we use the 220/50hz supply.

Now most of the manufacturer produce a double voltage unit and double frequency supply.

so if your unit have a 220/110 50/60 Hz, go ahead and bring it along....

now in case the Voltage only is 110 were your frequency is 50/60 , you can easily buy a voltage transformer locally.

SO, to get to the point, the main concern is the frequency, if it says only 60 Hz, leave the unit home....