I haven't been to Antarctica but have done a lot of cold weather hiking (mostly in Iceland) with various electronic equipment.
One tip relevant to this article that you can use to increase the performance of battery powered electronic equipment by keeping it heated.
Of course you're not going to bring along dedicated heating equipment, but you yourself function as a portable heat generator.
So e.g. if you need to carry a radio you can arrange your clothing so it's strapped to your chest with the battery facing your body, with all your clothing going over the radio, and a hands-free headset on a wire going up to your neck to use the radio.
One tip relevant to this article that you can use to increase the performance of battery powered electronic equipment by keeping it heated.
Of course you're not going to bring along dedicated heating equipment, but you yourself function as a portable heat generator.
So e.g. if you need to carry a radio you can arrange your clothing so it's strapped to your chest with the battery facing your body, with all your clothing going over the radio, and a hands-free headset on a wire going up to your neck to use the radio.