created a bands configuration file

application/config/bands.php

@@ -0,0 +1,4 @@
+<?php
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+$config['bands_available'] = array("160m", "80m", "60m", "40m", "30m", "20m", "17m", "15m", "12m", "10m", "6m", "4m", "2m", "70cm", "23cm", "13cm", "9cm", "6cm", "3cm", "1.25cm");