diff --git a/application/models/Logbook_model.php b/application/models/Logbook_model.php
index 7263f3bb7..ceb940af1 100755
--- a/application/models/Logbook_model.php
+++ b/application/models/Logbook_model.php
@@ -248,14 +248,12 @@ class Logbook_model extends CI_Model {
     $station_id = $this->input->post('station_profile');
 
     if($station_id == "" || $station_id == "0") {
-      $CI =& get_instance();
-      $CI->load->model('stations');
-      $station_id = $CI->stations->find_active();
+      $this->load->model('stations');
+      $station_id = $this->stations->find_active();
     }
 
-	$CI =& get_instance();
-	$CI->load->model('stations');
-        if (!$CI->stations->check_station_is_accessible($station_id)) {	// Hard Exit if station_profile not accessible
+	$this->load->model('stations');
+        if (!$this->stations->check_station_is_accessible($station_id)) {	// Hard Exit if station_profile not accessible
             return 'Station not accessible<br>';
         }
 
@@ -348,9 +346,8 @@ class Logbook_model extends CI_Model {
 	 * Used to fetch QSOs from the logbook in the awards
 	 */
 	public function qso_details($searchphrase, $band, $mode, $type, $qsl, $searchmode = null){
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
 		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
 		$this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC', 'left outer');
@@ -465,9 +462,8 @@ class Logbook_model extends CI_Model {
 	}
 
 	public function activated_grids_qso_details($searchphrase, $band, $mode){
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
 		$sql =  'SELECT COL_FREQ, COL_SOTA_REF, COL_OPERATOR, COL_IOTA, COL_VUCC_GRIDS, COL_STATE, COL_GRIDSQUARE, COL_PRIMARY_KEY, COL_CALL, COL_TIME_ON, COL_BAND, COL_SAT_NAME, COL_MODE, COL_SUBMODE, COL_RST_SENT, ';
 		$sql .= 'COL_RST_RCVD, COL_STX, COL_SRX, COL_STX_STRING, COL_SRX_STRING, COL_COUNTRY, COL_QSL_SENT, COL_QSL_SENT_VIA, ';
@@ -497,9 +493,8 @@ class Logbook_model extends CI_Model {
 	}
 
     public function vucc_qso_details($gridsquare, $band) {
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
 		$location_list = "'".implode("','",$logbooks_locations_array)."'";
 
@@ -521,9 +516,8 @@ class Logbook_model extends CI_Model {
     }
 
     public function activator_details($call, $band, $leogeo){
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
       $this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC', 'left outer');
@@ -594,11 +588,10 @@ class Logbook_model extends CI_Model {
 
 		$result = $this->exists_clublog_credentials($data['station_id']);
 		if (isset($result->ucp) && isset($result->ucn) && (($result->ucp ?? '') != '') && (($result->ucn ?? '') != '') && ($result->clublogrealtime == 1)) {
-			$CI =& get_instance();
-			$CI->load->library('AdifHelper');
+			$this->load->library('AdifHelper');
 			$qso = $this->get_qso($last_id,true)->result();
 
-			$adif = $CI->adifhelper->getAdifLine($qso[0]);
+			$adif = $this->adifhelper->getAdifLine($qso[0]);
 			$result = $this->push_qso_to_clublog($result->ucn, $result->ucp, $data['COL_STATION_CALLSIGN'], $adif);
 			if ( ($result['status'] == 'OK') || ( ($result['status'] == 'error') || ($result['status'] == 'duplicate') || ($result['status'] == 'auth_error') )){
 		  		$this->mark_clublog_qsos_sent($last_id);
@@ -609,11 +602,10 @@ class Logbook_model extends CI_Model {
 		$result = $this->exists_hrdlog_credentials($data['station_id']);
 		// Push qso to hrdlog if code is set, and realtime upload is enabled, and we're not importing an adif-file
 		if (isset($result->hrdlog_code) && isset($result->hrdlog_username) && $result->hrdlogrealtime == 1) {
-			$CI =& get_instance();
-			$CI->load->library('AdifHelper');
+			$this->load->library('AdifHelper');
 			$qso = $this->get_qso($last_id,true)->result();
 
-			$adif = $CI->adifhelper->getAdifLine($qso[0]);
+			$adif = $this->adifhelper->getAdifLine($qso[0]);
 			$result = $this->push_qso_to_hrdlog($result->hrdlog_username, $result->hrdlog_code, $adif);
 			if ( ($result['status'] == 'OK') || ( ($result['status'] == 'error') || ($result['status'] == 'duplicate') || ($result['status'] == 'auth_error') )){
 				$this->mark_hrdlog_qsos_sent($last_id);
@@ -623,11 +615,10 @@ class Logbook_model extends CI_Model {
 		$result = $this->exists_qrz_api_key($data['station_id']);
 // Push qso to qrz if apikey is set, and realtime upload is enabled, and we're not importing an adif-file
 		if (isset($result->qrzapikey) && $result->qrzrealtime == 1) {
-			$CI =& get_instance();
-			$CI->load->library('AdifHelper');
+			$this->load->library('AdifHelper');
 			$qso = $this->get_qso($last_id,true)->result();
 
-			$adif = $CI->adifhelper->getAdifLine($qso[0]);
+			$adif = $this->adifhelper->getAdifLine($qso[0]);
 			$result = $this->push_qso_to_qrz($result->qrzapikey, $adif);
 			if ( ($result['status'] == 'OK') || ( ($result['status'] == 'error') && ($result['message'] == 'STATUS=FAIL&REASON=Unable to add QSO to database: duplicate&EXTENDED=')) ){
 				$this->mark_qrz_qsos_sent($last_id);
@@ -637,11 +628,10 @@ class Logbook_model extends CI_Model {
 		$result = $this->exists_webadif_api_key($data['station_id']);
 		// Push qso to webadif if apikey is set, and realtime upload is enabled, and we're not importing an adif-file
 		if (isset($result->webadifapikey) && $result->webadifrealtime == 1) {
-			$CI =& get_instance();
-			$CI->load->library('AdifHelper');
+			$this->load->library('AdifHelper');
 			$qso = $this->get_qso($last_id,true)->result();
 
-			$adif = $CI->adifhelper->getAdifLine($qso[0]);
+			$adif = $this->adifhelper->getAdifLine($qso[0]);
 			$result = $this->push_qso_to_webadif(
 				$result->webadifapiurl,
 				$result->webadifapikey,
@@ -1030,9 +1020,8 @@ class Logbook_model extends CI_Model {
 	  $country = ucwords(strtolower($entity['name']), "- (/");
 
 	  // be sure that station belongs to user
-	  $CI =& get_instance();
-	  $CI->load->model('stations');
-	  if (!$CI->stations->check_station_is_accessible($stationId)) {
+	  $this->load->model('stations');
+	  if (!$this->stations->check_station_is_accessible($stationId)) {
 		  return;
 	  }
 
@@ -1040,7 +1029,7 @@ class Logbook_model extends CI_Model {
 		  return;
 	  }
 
-	  $station_profile=$CI->stations->profile_clean($stationId);
+	  $station_profile=$this->stations->profile_clean($stationId);
 	  $stationCallsign=$station_profile->station_callsign;
 
 	  $mode = $this->get_main_mode_if_submode($this->input->post('mode'));
@@ -1249,9 +1238,8 @@ class Logbook_model extends CI_Model {
 
   /* Return last 10 QSOs */
   function last_ten() {
-    $CI =& get_instance();
-    $CI->load->model('logbooks_model');
-    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+    $this->load->model('logbooks_model');
+    $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
     $this->db->select('COL_CALL, COL_BAND, COL_FREQ, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_PRIMARY_KEY, COL_SAT_NAME');
     $this->db->where_in('station_id', $logbooks_locations_array);
@@ -1263,9 +1251,8 @@ class Logbook_model extends CI_Model {
 
   /* Show custom number of qsos */
   function last_custom($num) {
-    $CI =& get_instance();
-    $CI->load->model('logbooks_model');
-    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+    $this->load->model('logbooks_model');
+    $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
     if(!empty($logbooks_locations_array)) {
       $this->db->select('COL_CALL, COL_BAND, COL_FREQ, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_DXCC, COL_PRIMARY_KEY, COL_SAT_NAME, COL_SRX, COL_SRX_STRING, COL_STX, COL_STX_STRING, COL_VUCC_GRIDS, COL_GRIDSQUARE, COL_MY_GRIDSQUARE, COL_OPERATOR, COL_IOTA, COL_WWFF_REF, COL_POTA_REF, COL_STATE, COL_CNTY, COL_DISTANCE, COL_SOTA_REF, COL_CONTEST_ID, dxcc_entities.end AS end');
@@ -1577,9 +1564,8 @@ class Logbook_model extends CI_Model {
 
   function get_qsos_for_printing($station_id2 = null) {
 
-	$CI =& get_instance();
-    $CI->load->model('stations');
-    $station_id = $CI->stations->find_active();
+    $this->load->model('stations');
+    $station_id = $this->stations->find_active();
 
     $sql = 'SELECT
 				STATION_CALLSIGN,
@@ -1621,9 +1607,8 @@ class Logbook_model extends CI_Model {
 
   function get_qsos($num, $offset, $StationLocationsArray = null) {
     if($StationLocationsArray == null) {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
     } else {
       $logbooks_locations_array = $StationLocationsArray;
     }
@@ -1690,9 +1675,8 @@ class Logbook_model extends CI_Model {
      * Function returns the QSOs from the logbook, which have not been either marked as uploaded to qrz, or has been modified with an edit
      */
   function get_qrz_qsos($station_id, $trusted = false){
-	  $CI =& get_instance();
-	  $CI->load->model('stations');
-	  if ((!$trusted) && (!$CI->stations->check_station_is_accessible($station_id))) {
+	  $this->load->model('stations');
+	  if ((!$trusted) && (!$this->stations->check_station_is_accessible($station_id))) {
 		  return;
 	  }
 	  $sql = 'select *, dxcc_entities.name as station_country from ' . $this->config->item('table_name') . ' thcv ' .
@@ -1712,9 +1696,8 @@ class Logbook_model extends CI_Model {
      * Function returns the QSOs from the logbook, which have not been either marked as uploaded to webADIF
      */
     function get_webadif_qsos($station_id,$from = null, $to = null,$trusted = false){
-	    $CI =& get_instance();
-	    $CI->load->model('stations');
-	    if ((!$trusted) && (!$CI->stations->check_station_is_accessible($station_id))) {
+	    $this->load->model('stations');
+	    if ((!$trusted) && (!$this->stations->check_station_is_accessible($station_id))) {
 		    return;
 	    }
 	    $sql = "
@@ -1838,9 +1821,8 @@ class Logbook_model extends CI_Model {
   function get_last_qsos($num, $StationLocationsArray = null) {
 
     if($StationLocationsArray == null) {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
     } else {
       $logbooks_locations_array = $StationLocationsArray;
     }
@@ -1870,9 +1852,8 @@ class Logbook_model extends CI_Model {
 	    $user_default_confirmation = $this->session->userdata('user_default_confirmation');
 
 	    if($StationLocationsArray == null) {
-		    $CI =& get_instance();
-		    $CI->load->model('logbooks_model');
-		    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		    $this->load->model('logbooks_model');
+		    $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 	    } else {
 		    $logbooks_locations_array = $StationLocationsArray;
 	    }
@@ -1927,9 +1908,8 @@ class Logbook_model extends CI_Model {
 function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray = null, $band = null) {
 
     if($StationLocationsArray == null) {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
     } else {
       $logbooks_locations_array = $StationLocationsArray;
     }
@@ -1954,9 +1934,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
   function check_if_grid_worked_in_logbook($grid, $StationLocationsArray = null, $band = null) {
 
     if($StationLocationsArray == null) {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
     } else {
       $logbooks_locations_array = $StationLocationsArray;
     }
@@ -1984,9 +1963,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Get all QSOs with a valid grid for use in the KML export */
     function kml_get_all_qsos($band, $mode, $dxcc, $cqz, $propagation, $fromdate, $todate) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         $this->db->select('COL_CALL, COL_BAND, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_PRIMARY_KEY, COL_SAT_NAME, COL_GRIDSQUARE');
         $this->db->where_in('station_id', $logbooks_locations_array);
@@ -2032,9 +2010,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     function totals_year() {
 
-    $CI =& get_instance();
-    $CI->load->model('logbooks_model');
-    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+    $this->load->model('logbooks_model');
+    $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
     if (!$logbooks_locations_array) {
       return null;
@@ -2053,20 +2030,19 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total number of qsos */
     function total_qsos($StationLocationsArray = null, $api_key = null) {
       if($StationLocationsArray == null) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
+        $this->load->model('logbooks_model');
         if ($api_key != null) {
-          $CI->load->model('api_model');
+          $this->load->model('api_model');
           if (strpos($this->api_model->access($api_key), 'r') !== false) {
             $this->api_model->update_last_used($api_key);
             $user_id = $this->api_model->key_userid($api_key);
-            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
-            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
+            $active_station_logbook = $this->logbooks_model->find_active_station_logbook_from_userid($user_id);
+            $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($active_station_logbook);
           } else {
             $logbooks_locations_array = [];
           }
         } else {
-          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+          $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
         }
       } else {
         $logbooks_locations_array = $StationLocationsArray;
@@ -2092,20 +2068,19 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return number of QSOs had today */
     function todays_qsos($StationLocationsArray = null, $api_key = null) {
       if($StationLocationsArray == null) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
+        $this->load->model('logbooks_model');
         if ($api_key != null) {
-          $CI->load->model('api_model');
+          $this->load->model('api_model');
           if (strpos($this->api_model->access($api_key), 'r') !== false) {
             $this->api_model->update_last_used($api_key);
             $user_id = $this->api_model->key_userid($api_key);
-            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
-            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
+            $active_station_logbook = $this->logbooks_model->find_active_station_logbook_from_userid($user_id);
+            $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($active_station_logbook);
           } else {
             $logbooks_locations_array = [];
           }
         } else {
-          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+          $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
         }
       } else {
         $logbooks_locations_array = $StationLocationsArray;
@@ -2136,9 +2111,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return QSOs over a period of days */
     function map_week_qsos($start, $end) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         $this->db->where("COL_TIME_ON BETWEEN '".$start."' AND '".$end."'");
         $this->db->where_in('station_id', $logbooks_locations_array);
@@ -2150,9 +2124,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* used to return custom qsos requires start, end date plus a band */
     function map_custom_qsos($start, $end, $band, $mode, $propagation) {
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
     if (!$logbooks_locations_array) {
       return null;
@@ -2189,9 +2162,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Returns QSOs for the date sent eg 2011-09-30 */
     function map_day($date) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         $start = $date." 00:00:00";
         $end = $date." 23:59:59";
@@ -2207,20 +2179,19 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     // Return QSOs made during the current month
     function month_qsos($StationLocationsArray = null, $api_key = null) {
       if($StationLocationsArray == null) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
+        $this->load->model('logbooks_model');
         if ($api_key != null) {
-          $CI->load->model('api_model');
+          $this->load->model('api_model');
           if (strpos($this->api_model->access($api_key), 'r') !== false) {
             $this->api_model->update_last_used($api_key);
             $user_id = $this->api_model->key_userid($api_key);
-            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
-            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
+            $active_station_logbook = $this->logbooks_model->find_active_station_logbook_from_userid($user_id);
+            $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($active_station_logbook);
           } else {
             $logbooks_locations_array = [];
           }
         } else {
-          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+          $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
         }
       } else {
         $logbooks_locations_array = $StationLocationsArray;
@@ -2257,20 +2228,19 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     function year_qsos($StationLocationsArray = null, $api_key = null) {
 
       if($StationLocationsArray == null) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
+        $this->load->model('logbooks_model');
         if ($api_key != null) {
-          $CI->load->model('api_model');
+          $this->load->model('api_model');
           if (strpos($this->api_model->access($api_key), 'r') !== false) {
             $this->api_model->update_last_used($api_key);
             $user_id = $this->api_model->key_userid($api_key);
-            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
-            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
+            $active_station_logbook = $this->logbooks_model->find_active_station_logbook_from_userid($user_id);
+            $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($active_station_logbook);
           } else {
              $logbooks_locations_array = [];
           }
         } else {
-          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+          $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
         }
       } else {
         $logbooks_locations_array = $StationLocationsArray;
@@ -2302,9 +2272,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total amount of SSB QSOs logged */
     function total_ssb() {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2331,9 +2300,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
    /* Return total number of satellite QSOs */
    function total_sat() {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2353,9 +2321,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
    /* Return total number of QSOs per continent */
    function total_continents($searchCriteria) {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2392,9 +2359,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total number of CW QSOs */
     function total_cw() {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2417,9 +2383,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total number of FM QSOs */
     function total_fm() {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2442,9 +2407,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total number of Digital QSOs */
     function total_digi() {
 
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2478,9 +2442,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of QSOs per band */
    function total_bands() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if (!$logbooks_locations_array) {
         return null;
@@ -2499,9 +2462,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     function get_QSLStats($StationLocationsArray = null) {
 
 	    if($StationLocationsArray == null) {
-		    $CI =& get_instance();
-		    $CI->load->model('logbooks_model');
-		    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		    $this->load->model('logbooks_model');
+		    $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 	    } else {
 		    $logbooks_locations_array = $StationLocationsArray;
 	    }
@@ -2601,9 +2563,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of QSL Cards sent */
     function total_qsl_sent() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('count(COL_QSL_SENT) AS count');
@@ -2626,9 +2587,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of QSL Cards requested for printing - that means "requested" or "queued" */
     function total_qsl_requested() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('count(COL_QSL_SENT) AS count');
@@ -2651,9 +2611,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of QSL Cards received */
     function total_qsl_rcvd() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('count(COL_QSL_RCVD) AS count');
@@ -2676,9 +2635,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of eQSL Cards sent */
     function total_eqsl_sent() {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         if(!empty($logbooks_locations_array)) {
             $this->db->select('count(COL_EQSL_QSL_SENT) AS count');
@@ -2701,9 +2659,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of eQSL Cards received */
     function total_eqsl_rcvd() {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         if(!empty($logbooks_locations_array)) {
             $this->db->select('count(COL_EQSL_QSL_RCVD) AS count');
@@ -2726,9 +2683,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of LoTW sent */
     function total_lotw_sent() {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         if(!empty($logbooks_locations_array)) {
             $this->db->select('count(COL_LOTW_QSL_SENT) AS count');
@@ -2751,9 +2707,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of LoTW received */
     function total_lotw_rcvd() {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         if(!empty($logbooks_locations_array)) {
             $this->db->select('count(COL_LOTW_QSL_RCVD) AS count');
@@ -2776,9 +2731,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of countries worked */
     function total_countries() {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         if(!empty($logbooks_locations_array)) {
           $this->db->select('DISTINCT (COL_COUNTRY)');
@@ -2796,9 +2750,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
     /* Return total number of countries worked */
     function total_countries_current($StationLocationsArray = null) {
       if($StationLocationsArray == null) {
-        $CI =& get_instance();
-        $CI->load->model('logbooks_model');
-        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+        $this->load->model('logbooks_model');
+        $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
       } else {
         $logbooks_locations_array = $StationLocationsArray;
       }
@@ -2821,9 +2774,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
         function total_countries_confirmed($StationLocationsArray = null) {
 
           if($StationLocationsArray == null) {
-            $CI =& get_instance();
-            $CI->load->model('logbooks_model');
-            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+            $this->load->model('logbooks_model');
+            $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
           } else {
             $logbooks_locations_array = $StationLocationsArray;
           }
@@ -2868,9 +2820,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of countries confirmed with paper QSL */
     function total_countries_confirmed_paper() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('DISTINCT (COL_COUNTRY)');
@@ -2888,9 +2839,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of countries confirmed with eQSL */
     function total_countries_confirmed_eqsl() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('DISTINCT (COL_COUNTRY)');
@@ -2908,9 +2858,8 @@ function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray =
 
     /* Return total number of countries confirmed with LoTW */
     function total_countries_confirmed_lotw() {
-      $CI =& get_instance();
-      $CI->load->model('logbooks_model');
-      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+      $this->load->model('logbooks_model');
+      $logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
       if(!empty($logbooks_locations_array)) {
         $this->db->select('DISTINCT (COL_COUNTRY)');
@@ -4525,9 +4474,8 @@ function lotw_last_qsl_date($user_id) {
   }
 
     function county_qso_details($state, $county) {
-		$CI =& get_instance();
-		$CI->load->model('logbooks_model');
-		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
+		$this->load->model('logbooks_model');
+		$logbooks_locations_array = $this->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
         $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
 		$this->db->join('lotw_users', 'lotw_users.callsign = '.$this->config->item('table_name').'.col_call', 'left outer');