There aren't a lot of advantages to VHF/UHF over the direct microwave links that they're already using (and a handful of disadvantages), so it's probably not li

There aren't a lot of advantages to VHF/UHF over the direct microwave links that they're already using (and a handful of disadvantages), so it's probably not likely. The big perceived advantage to HF is eliminating all of the hops, despite the dramatically reduced bandwidth. With VHF/UHF, you'd still need the hops, but you also have reduced bandwidth. If you need to hop, might as well make use of the bandwidth that you can get with microwave.