Re:The Backbone of VHF Amateur Radio May Be Under Threat
by Sanzig on Tuesday July 02, 2019 @12:08PM
(#20336472)
The thing is, 2 MHz of bandwidth in VHF isn't going to help the vast majority of those use cases. The best you can hope for is low-rate telemetry in that band (since that 2 MHz is going to need to be shared with other UAV users, and the noise temperature at VHF is horrendous due to man-made interference).
Those use cases more properly belong in the microwave bands. Why aren't they going after allocation in L-band and S-band?
I also fail to understand why they need an globally coordinated allocation for this. Surely with GPS + cognitive radio approaches, a UAV could use a local allocation set aside for this purpose wherever it's operating?
> The decisions of previous conferences have introduced some restrictions to the use and have imposed constraints on the development of aeronautical mobile applications within some existing mobile allocations traditionally used by the aeronautical mobile applications.
> At the same time, the number of manned and unmanned aircraft equipped with sensors has grown significantly in the past 20 years together with the need of bidirectional low to high data rate communications. Aeronautical applications like fire surveillance, border surveillance, air quality and environment monitoring, traffic monitoring, disaster monitoring, terrain modelling, imagery (visible, infrared, radar, meteo), video monitoring require non-safety communications between various types of aeronautical platforms.
> Consequently the need of non-safety data communications between various types of aeronautical platforms increases and so the need for new frequency bands.
* https://cept.org/ecc/groups/ecc/cpg/cpg-pt-a/client/meeting-...