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frontend/src/components/BandSlotGrid.tsx

@@ -11,10 +11,21 @@ interface Props {
   busy: boolean;
   currentBand: string;
   currentMode: string;
+  bands?: string[]; // operator's configured bands; falls back to DEFAULT_BANDS
 }
 
-// 13-column band layout — no 4m, no SHF (per user preference).
-const BANDS: { tag: string; label: string }[] = [
+// Compact column label for a band tag: keep the classic V/U for 2m/70cm,
+// strip the trailing "m" for meter bands (160m→160), and shorten cm bands
+// (13cm→13c) so the column stays narrow.
+function bandColLabel(tag: string): string {
+  if (tag === '2m') return 'V';
+  if (tag === '70cm') return 'U';
+  if (tag.endsWith('cm')) return tag.replace('cm', 'c');
+  return tag.replace(/m$/, '');
+}
+
+// Default 13-column band layout, used when the operator hasn't configured bands.
+const DEFAULT_BANDS: { tag: string; label: string }[] = [
   { tag: '160m', label: '160' },
   { tag: '80m',  label: '80'  },
   { tag: '60m',  label: '60'  },
@@ -67,7 +78,13 @@ function cellTitle(band: string, cls: string, status: string, current: boolean):
   return `${band} ${cls}: ${desc}${current ? ' — current entry' : ''}`;
 }
 
-export function BandSlotGrid({ wb, busy, currentBand, currentMode }: Props) {
+export function BandSlotGrid({ wb, busy, currentBand, currentMode, bands }: Props) {
+  // Columns from the operator's configured bands (so the matrix shows only the
+  // bands they actually use), falling back to the built-in default set.
+  const cols = useMemo(
+    () => (bands && bands.length ? bands.map((tag) => ({ tag, label: bandColLabel(tag) })) : DEFAULT_BANDS),
+    [bands],
+  );
   const dxcc = wb?.dxcc ?? 0;
   const dxccName = wb?.dxcc_name ?? '';
   const dxccCount = wb?.dxcc_count ?? 0;
@@ -136,7 +153,7 @@ export function BandSlotGrid({ wb, busy, currentBand, currentMode }: Props) {
         <thead>
           <tr>
             <th className="w-[26px]" />
-            {BANDS.map((b) => (
+            {cols.map((b) => (
               <th
                 key={b.tag}
                 className={cn(
@@ -162,7 +179,7 @@ export function BandSlotGrid({ wb, busy, currentBand, currentMode }: Props) {
                 >
                   {cls}
                 </th>
-                {BANDS.map((b) => {
+                {cols.map((b) => {
                   const st = statusMap.get(`${b.tag}|${cls}`) ?? '';
                   const isCurrent = b.tag === currentBand && classCurrent;
                   return (