Spectrum Regulations

In the countries of initial interest (middle, subauroral and auroral northern latitudes) there is general amateur radio spectrum availability in the wavelength bands: 160, 75, and 40 meters. These bands are generally available worldwide, with slightly different frequency limits in each country. Some countries allow less than 6 kHz bandwidth, while others (like the US) do not define a specific number in kHz for permitted bandwidth.

The 60 and 30 meter bands are generally quite constrained in bandwidth and regulation.

In the initial implementation, it is not necessary to pick a frequency common to all nations, since by design the system is relatively short range.

For high-resolution geoscience applications, we have an experimental license allowing broadband waveforms--other countries have such licenses available too as used in numerous other HF radars around the world.

USA

Some brainstorming on USA regulations on spectral regulations vis amateur radio.

• 1.8 - 2.0 MHz
• 3.6 - 4.0 MHz
• 7.125 - 7.30 MHz

Canada

Canada allows 6 kHz bandwidth on the

• 1.8 - 2.0 MHz
• 3.5 - 4.0 MHz
• 7.0 - 7.3 MHz

with an Advanced license for remote control operations.

Norway

Norway allows 6 kHz bandwidth

• 1.81 - 2.0 MHz
• 3.5 - 3.8 MHz
• 7.0 - 7.2 MHz

Finland

Finland allows 8 kHz bandwidth

• 1.81 - 2.0 MHz
• 3.5 - 3.8 MHz
• 7.0 - 7.2 MHz