diff --git a/application/config/config.sample.php b/application/config/config.sample.php
index 081a62e8..b388af57 100644
--- a/application/config/config.sample.php
+++ b/application/config/config.sample.php
@@ -598,3 +598,16 @@ $config['rewrite_short_tags'] = FALSE;
 | Array:		array('10.0.1.200', '192.168.5.0/24')
 */
 $config['proxy_ips'] = '';
+
+/*
+|--------------------------------------------------------------------------
+| DXCluster-API Base-URL
+|--------------------------------------------------------------------------
+|
+| If you have access to a DXCluster-API ( see https://github.com/int2001/DXClusterAPI for running your own )
+| put the base-URL for that API here
+|
+| Example:			'https://log.jo30.de/dxcache'
+| Leave blank to disable:	''
+*/
+$config['dxcluster_provider']='';
diff --git a/application/views/interface_assets/footer.php b/application/views/interface_assets/footer.php
index 574f57fb..dd753bf6 100644
--- a/application/views/interface_assets/footer.php
+++ b/application/views/interface_assets/footer.php
@@ -933,9 +933,25 @@ $(document).on('keypress',function(e) {
 
 <?php if ($this->uri->segment(1) == "qso") { ?>
 <script src="<?php echo base_url() ;?>assets/js/sections/qso.js"></script>
-
 <?php
 
+	if ($this->config->item('dxcluster_provider') != ''){ ?>
+	<script type="text/javascript">
+		var dxcluster_provider =' <?php echo $this->config->item('dxcluster_provider'); ?>';
+		$(document).ready(function() {
+			$("#check_cluster").on("click", function() {
+				$.ajax({ url: dxcluster_provider+"/spot/"+$("#frequency").val()/1000, cache: false, dataType: "json" }).done(
+					function(dxspot) {
+						$("#callsign").val(dxspot.spotted);
+					}
+				);
+			});
+		});
+	</script>
+<?php
+}
+
+
     $this->load->model('stations');
     $active_station_id = $this->stations->find_active();
     $station_profile = $this->stations->profile($active_station_id);
diff --git a/application/views/qso/index.php b/application/views/qso/index.php
index 4533b6b5..ec127c54 100755
--- a/application/views/qso/index.php
+++ b/application/views/qso/index.php
@@ -63,7 +63,7 @@
               <!-- Callsign Input -->
               <div class="form-row">
                 <div class="form-group col-md-9">
-                  <label for="callsign"><?php echo lang('gen_hamradio_callsign'); ?></label>
+                  <label for="callsign"><?php echo lang('gen_hamradio_callsign'); ?></label><?php if ($this->config->item('dxcluster_provider') != '') { ?>&nbsp;<i id="check_cluster" data-toggle="tooltip" data-original-title="Search DXCluster for latest Spot" class="fas fa-search"></i> <?php } ?>
                   <input type="text" class="form-control" id="callsign" name="callsign" required>
                   <small id="callsign_info" class="badge badge-secondary"></small> <small id="lotw_info" class="badge badge-success"></small>
                 </div>