Low band means frequencies below roughly 1 GHz. Signals at those frequencies bend around obstacles and pass through walls, so one mast covers a wide area — but they carry relatively little data.
低频段 —— 大约 1 吉赫以下的频段。这一
| Move变动 | Where it appeared出现位置 | What it means这句话在说什么 |
|---|---|---|
| — | SpaceX buys the last spectrum it needs to enter US mobile 低频段 —— 大约 1 吉赫以下的频段。这一 · 第 2 张术语卡 | The 800 MHz licences are the coverage layer. SpaceX already had 2 GHz mid-band for capacity, which is why it called this the last piece. 把「覆盖」与「容量」分开想就好懂了：低频段是铺得开但跑不快的乡道，中频段是跑得快却铺不满的省道。一张成熟网络必须两层都有 —— 这正是 SpaceX 说「拼图最后一块」的原因：它此前只有中频段与卫星，室内、地下车库这类场景就露了破绽。 |