detect and pass band information to the map

bands.json

@@ -0,0 +1,97 @@
+[
+  {
+    "name": "160m",
+    "lower_bound": 1810000,
+    "upper_bound": 2000000
+  },
+  {
+    "name": "80m",
+    "lower_bound": 3500000,
+    "upper_bound": 3800000
+  },
+  {
+    "name": "60m",
+    "lower_bound": 5351500,
+    "upper_bound": 3566500
+  },
+  {
+    "name": "40m",
+    "lower_bound": 7000000,
+    "upper_bound": 7200000
+  },
+  {
+    "name": "30m",
+    "lower_bound": 10100000,
+    "upper_bound": 10150000
+  },
+  {
+    "name": "20m",
+    "lower_bound": 14000000,
+    "upper_bound": 14350000
+  },
+  {
+    "name": "17m",
+    "lower_bound": 18068000,
+    "upper_bound": 18168000
+  },
+  {
+    "name": "15m",
+    "lower_bound": 21000000,
+    "upper_bound": 21450000
+  },
+  {
+    "name": "12m",
+    "lower_bound": 24890000,
+    "upper_bound": 24990000
+  },
+  {
+    "name": "10m",
+    "lower_bound": 28000000,
+    "upper_bound": 29700000
+  },
+  {
+    "name": "6m",
+    "lower_bound": 50030000,
+    "upper_bound": 51000000
+  },
+  {
+    "name": "4m",
+    "lower_bound": 70150000,
+    "upper_bound": 70200000
+  },
+  {
+    "name": "2m",
+    "lower_bound": 144000000,
+    "upper_bound": 146000000
+  },
+  {
+    "name": "70cm",
+    "lower_bound": 430000000,
+    "upper_bound": 440000000
+  },
+  {
+    "name": "23cm",
+    "lower_bound": 1240000000,
+    "upper_bound": 1300000000
+  },
+  {
+    "name": "13cm",
+    "lower_bound": 2320000000,
+    "upper_bound": 2450000000
+  },
+  {
+    "name": "9cm",
+    "lower_bound": 3400000000,
+    "upper_bound": 3475000000
+  },
+  {
+    "name": "6cm",
+    "lower_bound": 5650000000,
+    "upper_bound": 5850000000
+  },
+  {
+    "name": "3cm",
+    "lower_bound": 10000000000,
+    "upper_bound": 10500000000
+  }
+]