From 053ceb3dcf7178f17d2aed9df4149cc7f2fcb2b3 Mon Sep 17 00:00:00 2001
From: phl0 <github@florian-wolters.de>
Date: Tue, 3 Sep 2024 14:41:02 +0200
Subject: [PATCH 1/2] Just give empty result on frequency being 0

---
 application/libraries/Frequency.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/application/libraries/Frequency.php b/application/libraries/Frequency.php
index 5be7854fc..1690d85e1 100644
--- a/application/libraries/Frequency.php
+++ b/application/libraries/Frequency.php
@@ -258,6 +258,10 @@ class Frequency {
 	 */
 	function qrg_conversion($frequency, $r_option = 1, $source_unit = 'Hz', $target_unit = NULL) {
 
+		if ($frequency == 0) {
+			return null;
+		}
+
 		$CI = &get_instance();
 	
 		// Get the band

From 1e68b3bb31d5d0e365081f0a243c49b9594038b4 Mon Sep 17 00:00:00 2001
From: phl0 <github@florian-wolters.de>
Date: Tue, 3 Sep 2024 14:49:19 +0200
Subject: [PATCH 2/2] Hide frequency rows in QSO view as well if zero

---
 application/views/view_log/qso.php | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/application/views/view_log/qso.php b/application/views/view_log/qso.php
index f8203a1dd..dcf859960 100644
--- a/application/views/view_log/qso.php
+++ b/application/views/view_log/qso.php
@@ -89,16 +89,19 @@
                     </tr>
 
                     <?php if($this->config->item('display_freq') == true) { ?>
-                    <tr>
-                        <td><?= __("Frequency"); ?></td>
-                        <td><?php echo $this->frequency->qrg_conversion($row->COL_FREQ); ?></td>
-                    </tr>
-                    <?php if($row->COL_FREQ_RX != 0) { ?>
-                    <tr>
-                        <td><?= __("Frequency (RX)"); ?></td>
-                        <td><?php echo $this->frequency->qrg_conversion($row->COL_FREQ_RX); ?></td>
-                    </tr>
-                    <?php }} ?>
+                        <?php if($row->COL_FREQ != 0) { ?>
+                        <tr>
+                            <td><?= __("Frequency"); ?></td>
+                            <td><?php echo $this->frequency->qrg_conversion($row->COL_FREQ); ?></td>
+                        </tr>
+                        <?php } ?>
+                        <?php if($row->COL_FREQ_RX != 0) { ?>
+                        <tr>
+                            <td><?= __("Frequency (RX)"); ?></td>
+                            <td><?php echo $this->frequency->qrg_conversion($row->COL_FREQ_RX); ?></td>
+                        </tr>
+                        <?php } ?>
+                    <?php } ?>
 
                     <tr>
                         <td><?= __("Mode"); ?></td>