900 Mhz has been polluted with Mesh networking and "Smart Meters" that causes so much noise.
Part of the 220 band was re-purposed for UPS to deploy a logistics system and it never materialized. There have been rumblings that the whole 220 band will be eliminated for future wireless due to under use. (They are nuts because 220 is plagued with propagation in the summer even if they use spread spectrum).
The 440 band between 420 - 430 north of us along the Canadian border has been banned under a "treaty" category that can be repurposed easily. In some areas of the US close to military bases or areas running certain types of radar, parts of California, parts of Colorado, the whole 70cm band is not allowed.
No bands, yet, have been repurposed. it was bad terminology on my part. But, in quest for more "low band" wireless and "white space" shared spectrum, the 440 band is ripe for picking. After all these analog TV station auctions, this makes more sense.
There is an uptick of Ham licenses being issues, but with digital, a lot of people are migrating using IP or talking remotely, making the bands seem "quiet". This gives the impression they are not used.
« Back to index | View thread »