2015-05-16, 02:07
If you put the station right at the pole, all directions will be North.... 
Seriously, industrial rated electronic components are rated to -40C. You may need to place the amplifiers and controller in heated cabinets. Of course, taking care that the heater controllers don't create noise. Sounds like a challenge.
Hammond makes some PTC cabinet heaters that might work. I have my RED system out in the garage and I use one in the cabinet there.
Hammond Heater Catalog
The parts that might cause the most problem will be the electrolytic capacitors. When the electrolyte freezes, the capacitance will be dramatically lower. I saw this effect in an automotive application, where the power supply got very noisy due to the capacitance change.
You might be able to substitute some parts for -55C "military grade" specification.
Greg H.
Seriously, industrial rated electronic components are rated to -40C. You may need to place the amplifiers and controller in heated cabinets. Of course, taking care that the heater controllers don't create noise. Sounds like a challenge.
Hammond makes some PTC cabinet heaters that might work. I have my RED system out in the garage and I use one in the cabinet there.
Hammond Heater Catalog
The parts that might cause the most problem will be the electrolytic capacitors. When the electrolyte freezes, the capacitance will be dramatically lower. I saw this effect in an automotive application, where the power supply got very noisy due to the capacitance change.
You might be able to substitute some parts for -55C "military grade" specification.
Greg H.