Multi-band Compression - Sound on Sound.
The low-band UHF range of frequencies may be considered as two overlapping bands: low (450-536 MHz) and high (470-806 MHz). The primary users of these bands are business services such as land mobile radio and pagers (450-536 MHz), and UHF television channels 14 - 69 (470-806 MHz).
Once you plug your network cable into a Wi-Fi router, the radio waves that wirelessly transmit an Internet signal to your iPhone or Xbox travel on one of two frequency bands: 2.4 GHz and 5 GHz. It's these different frequencies that separate a single-band router from a dual-band, and makes tri-band routers distinct from both.
Public safety spectrum also serves the public safety-related telecommunications needs of state and local governments generally. Public safety channels are available in the VHF band, 220 MHz band, UHF, T-Band (licensing freeze in effect), 700 MHz narrowband, 700 MHz broadband, 800 MHz band, 4.9 GHz, and 5.9 GHz bands, as follows.
Dual-band routers vs. single-band routers: network speed Despite the price, there is a big difference on network speed of the two types of routers. Single-band router is limited in speed to the internet connection and the speed of the router itself.
Low band does not have digital capability because of the speed at which the frequency resonates.( vibrates) Just as the antenna on low band is long, so is the wave form or cycle of the frequency. The frequency is lower so it can not carry the high speed data communications. Digital needs the fast band cycle or wave to carry the signal.
Cellular carriers have begun expanding their low-band networks into 600 MHz band 71 and 2300 MHz band 30. 5G will use all of the above and even higher frequencies—all the way up to 48 GHz—to provide cellular connectivity to more devices with higher bandwidth requirements.
The advantages of combining 5G NR with LTE 5G at mid and high bands is well suited for deployment at existing site grids, especially when combined with low-band LTE. Adding new frequency bands to existing deployments is a future-proof and cost-efficient way to improve performance, meet the growing needs of mobile broadband subscribers and deliver new 5G-based services.