1. Does the USB ethernet share the same bus as the USB host port (like the raspberry pi)?
It’s a discrete device with shared power.
2. What kind of power draw can we expect from this lil guy?
Peak draw is 2.5amps at 5volts. The mean draw is around 1.5amps at 5 volts.
3. On the info graphic, you mention power over dual microUSB. Does that mean both are required if you don't have a 12V barrel plugged in? Are these ports power only?
You can power the device over any combination of the 3 ports as long as you meet the wattage requirement.
4. Do you foresee a spec bump in the future life of the TETRA? Upping the NAND or otherwise?
The NAND is limited by the main IC at 2GBs.
5. Why'd you guys choose to not include a microSD this time around? Was it just cost of components, or other reasons?
The USB bus on router ICs has never been very reliable, so on this device a conscious effort was made to avoid hosted USB devices to increate stability. That’s why NAND was chosen for this device. To add a microSD card slot would require a USB reader and a USB hub to support the one USB host port. Cost was not the driving factor, stability was. That why the second radio is PCIe instead of USB.
6. What can you tell us about these amplifiers? What kind of range are you seeing?
I’m sure you will see range tests in the near future, but it has a very long range.