@fpvcult/frequency v0.2.0

Frequency

A JavaScript library, written in TypeScript, to lookup 5.8GHz FPV channels.

npm i -D @fpvcult/frequency

API

constructor()

constructor(config: string)

• config - Band organization, valid inputs are laprf or rx5808. If no argument is provided, it will default to laprf. It will also throw an error if called with an invalid argument.

Examples:

const freqs = new Frequency();
const freqs = new Frequency("rx5808");

Class Method: get

get(name: string): Channel | undefinded

get(band: number, channel: number): Channel | undefined

As aruments, takes either a string representing a channel name F7 or e2, or two numbers first for band and second for channel.

freqs.get("F2"); // => Channel { band: 1, channel: 2, frequency: 5760, name: 'F2' }
freqs.get(2, 8); // => Channel { band: 2, channel: 8, frequency: 5917, name: 'R8' }

Class Method: getByFrequency

getByFrequency(frequency: number): Channel | Channel[] | undefined

Takes a frequency number as an argument. There is one frequency that is shared between bands, 5880. So this method returns either a single channel, an array of channels or undefined.

freqs.getByFrequency(5880); // => [ Channel { band: 1, channel: 8, frequency: 5880, name: 'F8' },
//                                  Channel { band: 2, channel: 7, frequency: 5880, name: 'R7' } ]
freqs.getByFrequency(5800); // => Channel { band: 1, channel: 4, frequency: 5800, name: 'F4' }

Channel Class

export class Channel {
  constructor(
    readonly band: number,
    readonly channel: number,
    readonly frequency: number,
    readonly name: string
  ) {}
}