diff --git a/config_webrx.py b/config_webrx.py
index 34e480c6b..39e4dde8f 100644
--- a/config_webrx.py
+++ b/config_webrx.py
@@ -71,9 +71,12 @@
 fft_size=4096 #Should be power of 2
 fft_voverlap_factor=0.3 #If fft_voverlap_factor is above 0, multiple FFTs will be used for creating a line on the diagram.
 
+"""
+Note: RTL2832U can sample from two ranges: 225001 to 300000 and 900001 to 3200000.
+"""
 # samp_rate = 250000
 samp_rate = 2400000
-center_freq = 144250000
+center_freq = 144.250 * 1000000
 rf_gain = 5 #in dB. For an RTL-SDR, rf_gain=0 will set the tuner to auto gain mode, else it will be in manual gain mode.
 ppm = 0