What is the frequency band for 2G?
Table 1
| 2G, 3G, 4G Frequency Bands in the US | ||
|---|---|---|
| S.N | Cellular Technology in US | Frequency bands in US |
| 1 | GSM | 850 MHz, 1900 MHz |
| 2 | CDMA (2G, 3G) | 800 MHz, 1900 MHz |
| 3 | WCDMA (3G) | 850 MHz, 1900 MHz, 2100 MHz |
What is the HF frequency range?
between 3 and 30 MHz
High frequency (HF) is the ITU-designated range of radio frequency electromagnetic waves (radio waves) between 3 and 30 MHz. It is also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters (ten to one hundred metres).
What is the 2.4 GHz ISM band?
Frequency allocations
| Frequency range | Availability | |
|---|---|---|
| 2.4 GHz | 2.5 GHz | Worldwide |
| 5.725 GHz | 5.875 GHz | Worldwide |
| 24 GHz | 24.25 GHz | Worldwide |
| 61 GHz | 61.5 GHz | Subject to local acceptance |
What frequencies make up the high band?
Frequency Bands
| Frequency Band Name | Frequency Range | Application |
|---|---|---|
| High Frequency (HF) | 3-30 MHz | Shortwave Radio |
| Very High Frequency (VHF) | 30-300 MHz | FM Radio |
| Ultra High Frequency (UHF) | 300-3000 MHz | Television, Mobile Phones, GPS |
| Super High Frequency (SHF) | 3-30 GHz | Satellite Links, Wireless Communication |
How far can HF reach?
But the real advantage of HF is skywave propagation, where a single link can span distances as great as 3,000 km (a little less than 1,900 miles). Skywave propagation occurs when the radio wave is refracted (bent) in the uppermost layer of the atmosphere, called the ionosphere.
What devices still use 2.4 GHz?
Audio-visual (AV) Devices
- Baby monitors. Main article: Baby monitor.
- Audio Devices. Wireless Microphones.
- Video devices. Main article: Video sender.
- Toys. Many radio controlled drones, model aircraft, model boats and toys use the 2.4 GHz band.
- Garage doors.
- Smart Power Meters.
- Wireless Power.
- Use wires.
What devices use the 2.4 GHz band?
The 2.4GHz band is more prone to interference because of the number of devices that use this frequency. This includes older routers, microwaves, Bluetooth devices, baby monitors, garage door openers and more.
Is 2G being phased out?
Vodafone and EE have announced they will be shutting their 2G networks in 2025 and their 3G networks in 2022. What that means is that from 2023 only 3 and O2 will have 3G networks in the UK.