diff --git a/RSSI/RSSI_GM340.dat b/RSSI/RSSI_GM340.dat
index a73c722..63c6ae6 100644
--- a/RSSI/RSSI_GM340.dat
+++ b/RSSI/RSSI_GM340.dat
@@ -4,15 +4,16 @@
 # The format of the file is:
 # Raw RSSI Value		dBm Value
 #
-# Measured with a Marconi 2955 Test set and Motorola GM340 UHF (430.6125 MHz).
+# Measured with a Marconi 2955 Test set and Motorola GM340 UHF (430.6125 MHz) using Arduino DUE.
+# No resistor divider, 100nF decoupling capacitor from ADC to ground.
 # Both S-meter (6dB) and decade (10dB) steps are included between the noise floor and saturation.
 # George M1GEO / GB7KH - 01/01/2017
 #
-2841		-20
-2848		-30
-2854		-40
-2858		-43
-2858		-48
+2858		-20
+2857		-30
+2856		-40
+2855		-43
+2854		-48
 2853		-50
 2845		-53
 2780		-58
@@ -39,4 +40,4 @@
 1006		-130
 985		-135
 976		-140
-971		-150
\ No newline at end of file
+971		-150