PTP600 in extreme conditions

Wondering who is using the PTP600 in extreme conditions meaning winters -22F plus wind chill and summers +105F. We are thinking of upgrading to these radios but this is the most critical component.
Also…how do they perform on multiple hops.

Love to speak to someone about the product

We use these radios under -40f(plus wind chill) to +95f without any problems… Very very good radios in my opinion.

Would it be possible for me to call you?