= Frequency Range =

The Frequency ranges of radio are broken into several bands that are named and
standardized. They appear below

| Name | Abbreviation | Range | Notes |
---------------------------------------
| Very Low Freq     | VLF | 3khz - 30khz   |                                   |
| Low Freq          | LF  | 30khz - 300khz |                                   |
| Medium Freq       | MF  | 300khz - 3mhz  | AM Radio                          |
| High Freq         | HF  | 3mhz - 30mhz   | Shortwave, 10m to 1m              |
| Very High Freq    | VHF | 30mhz - 300mhz | VHF TV, FM radio, 1000cm to 100cm |
| Ultra High Freq   | UHF | 300mhz - 3ghz  | UHF TV, 3G/4G, 100cm to 30cm      |
| Super High Freq   | SHF | 3ghz - 30ghz   |                                   |
| Extreme High Freq | EHF | 30ghz - 300ghz |                                   |

To calculate a wavelength from a frequency 

WL = c / f

Where WL is wavelength,
c is speed of light (3 * 10^8 m/s)
f is frequency

A shorthand is 

WL = 300 / f

Where f is in Mhz

== Frequency to Wavelength ==

Below are the common wavelength and frequencies

| Frequency (Mhz) | Wavelength |
----------------------------------------
| HF/MF | HF/MF  |
| 1.8   | 160m   |
| 3.5   | 80m    |
| 5     | 60m    |
| 7     | 40m    |
| 10    | 30m    |
| 14    | 20m    |
| 18    | 17m    |
| 21    | 15m    |
| 24    | 12m    |
| 28    | 10m    |
| VHF   | VHF    |
| 50    | 6m     |
| 144   | 2m     |
| 222   | 1.25m  |
| UHF   | UHF    |
| 440   | 70cm   |
| 902   | 33cm   |
| 1240  | 23cm   |
| 2300  | 13cm   |