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OpsLog/frontend/src/lib/rst.ts
T

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1.9 KiB
TypeScript

// sMeterRST turns an S-meter reading into the RST report you SEND to the other
// station (RST tx / rst_sent) — because your S-meter is how strong THEY are.
//
// s : S-unit 0-9 (used when below S9)
// overDb : dB over S9 (0 when at/below S9)
// mode : operating mode — CW/digital get a 3-digit RST, phone a 2-digit RS
//
// For S9+ the dB is rounded UP to the nearest 5 (a 9+3 reading reports 59+5,
// 9+12 reports 59+15, …), matching how operators give strong-signal reports.
export function sMeterRST(s: number, overDb: number, mode?: string): string {
const cw = /CW|RTTY|PSK|FT[0-9]|JT|JS8|MFSK|OLIVIA|DATA|DIG/i.test(mode || '');
const strength = Math.max(1, Math.min(9, Math.round(s)));
if (cw) return overDb > 0 ? '599' : `5${strength}9`;
if (overDb > 0) return `59+${Math.ceil(overDb / 5) * 5}`;
return `5${strength}`;
}
// RST dropdown lists, shared by the entry form and the QSO editor so both offer
// the same per-mode choices (Settings → Modes → RST report lists).
export type RSTLists = { phone: string[]; cw: string[]; digital: string[] };
// rstCategory maps an ADIF mode to its RST family (phone / cw / digital).
export function rstCategory(mode: string): keyof RSTLists {
const m = (mode || '').toUpperCase();
const digital = ['FT8', 'FT4', 'JT65', 'JT9', 'JS8', 'Q65', 'MSK144', 'FST4', 'FST4W', 'MFSK', 'OLIVIA', 'JT4', 'WSPR'];
if (digital.includes(m)) return 'digital';
if (['CW', 'RTTY', 'PSK31', 'PSK63', 'PSK', 'PSK125'].includes(m)) return 'cw';
return 'phone';
}
// rstOptions returns the valid report choices for a mode from the user's
// editable lists, with a tiny fallback before they load.
export function rstOptions(mode: string, lists: RSTLists): string[] {
const cat = rstCategory(mode);
const l = lists[cat];
if (l && l.length) return l;
return cat === 'phone' ? ['59', '58', '57'] : cat === 'cw' ? ['599', '589', '579'] : ['+00', '-10', '-20'];
}