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] 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