From bf7440e3c09249b11aaf65813c34cf611e36eab8 Mon Sep 17 00:00:00 2001
From: Craig Warren <craig_warren@me.com>
Date: Fri, 21 Apr 2023 13:19:17 +0100
Subject: [PATCH] Revert freq equals none check as not set with user waveform

---
 gprMax/waveforms.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/gprMax/waveforms.py b/gprMax/waveforms.py
index 84c65f4e..65e52d40 100644
--- a/gprMax/waveforms.py
+++ b/gprMax/waveforms.py
@@ -53,8 +53,6 @@ class Waveform:
         """Calculates coefficients (used to calculate values) for specific
             waveforms.
         """
-        if self.freq is None:
-            raise ValueError("Frequency is not specified")
 
         if self.type in ['gaussian',
                          'gaussiandot',