diff --git a/application/controllers/Logbook.php b/application/controllers/Logbook.php
index 801fafc0..c5dc1e6e 100644
--- a/application/controllers/Logbook.php
+++ b/application/controllers/Logbook.php
@@ -103,6 +103,7 @@ class Logbook extends CI_Controller {
 
 		// Convert - in Callsign to / Used for URL processing
 		$callsign = str_replace("-","/",$callsign);
+		$callsign = str_replace("Ø","0",$callsign);
 
 		// Check if callsign is an LoTW User
 		// Check Database for all other data
diff --git a/assets/js/sections/qso.js b/assets/js/sections/qso.js
index 6d10cc00..87e8b245 100644
--- a/assets/js/sections/qso.js
+++ b/assets/js/sections/qso.js
@@ -506,9 +506,10 @@ $("#callsign").focusout(function() {
 		var find_callsign = $(this).val().toUpperCase();
 
 		find_callsign.replace(/\//g, "-");
+		find_callsign.replace('Ø', '0');
 
 		// Replace / in a callsign with - to stop urls breaking
-		$.getJSON(base_url + 'index.php/logbook/json/' + find_callsign.replace(/\//g, "-") + '/' + sat_type + '/' + json_band + '/' + json_mode + '/' + $('#stationProfile').val(), function(result)
+		$.getJSON(base_url + 'index.php/logbook/json/' + find_callsign + '/' + sat_type + '/' + json_band + '/' + json_mode + '/' + $('#stationProfile').val(), function(result)
 		{
 
 			// Make sure the typed callsign and json result match
@@ -521,9 +522,12 @@ $("#callsign").focusout(function() {
 					$('#country').val(convert_case(result.dxcc.entity));
 					$('#callsign_info').text(convert_case(result.dxcc.entity));
 
+					var callsign = find_callsign.replace(/\//g, "-");
+					callsign = callsign.replace('Ø', '0');
+
 					if($("#sat_name" ).val() != "") {
 						//logbook/jsonlookupgrid/io77/SAT/0/0
-						$.getJSON(base_url + 'index.php/logbook/jsonlookupcallsign/' + find_callsign.replace(/\//g, "-") + '/SAT/0/0', function(result)
+						$.getJSON(base_url + 'index.php/logbook/jsonlookupcallsign/' + find_callsign + '/SAT/0/0', function(result)
 						{
 							// Reset CSS values before updating
 							$('#callsign').removeClass("workedGrid");
@@ -545,7 +549,7 @@ $("#callsign").focusout(function() {
 							}
 						})
 					} else {
-						$.getJSON(base_url + 'index.php/logbook/jsonlookupcallsign/' + find_callsign.replace(/\//g, "-") + '/0/' + $("#band").val() +'/' + $("#mode").val(), function(result)
+						$.getJSON(base_url + 'index.php/logbook/jsonlookupcallsign/' + find_callsign + '/0/' + $("#band").val() +'/' + $("#mode").val(), function(result)
 						{
 							// Reset CSS values before updating
 							$('#callsign').removeClass("confirmedGrid");
@@ -940,11 +944,12 @@ $("#callsign").on("keypress", function(e) {
 $("#callsign").keyup(function() {
 	if ($(this).val().length >= 3) {
 	  $('.callsign-suggest').show();
+	  $callsign = $(this).val().replace('Ø', '0');
 	  $.ajax({
 		url: 'lookup/scp',
 		method: 'POST',
 		data: {
-		  callsign: $(this).val().toUpperCase()
+		  callsign: $callsign.toUpperCase()
 		},
 		success: function(result) {
 		  $('.callsign-suggestions').text(result);