diff --git a/rf-analyzer/rf-analyzer-cache.lib b/rf-analyzer/rf-analyzer-cache.lib
index ddcd667f8b1b0e1f4f81c19e253d6cbe54ec58e1..f881d2dfb1c7a7cf0d2b1febc528ba1c75d36148 100644
--- a/rf-analyzer/rf-analyzer-cache.lib
+++ b/rf-analyzer/rf-analyzer-cache.lib
@@ -147,28 +147,6 @@ X A 2 100 0 70 L 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
-# Device_D_Zener
-#
-DEF Device_D_Zener D 0 40 N N 1 F N
-F0 "D" 0 100 50 H V C CNN
-F1 "Device_D_Zener" 0 -100 50 H V C CNN
-F2 "" 0 0 50 H I C CNN
-F3 "" 0 0 50 H I C CNN
-$FPLIST
- TO-???*
- *_Diode_*
- *SingleDiode*
- D_*
-$ENDFPLIST
-DRAW
-P 2 0 1 0 50 0 -50 0 N
-P 3 0 1 10 -50 -50 -50 50 -30 50 N
-P 4 0 1 10 50 -50 50 50 -50 0 50 -50 N
-X K 1 -150 0 100 R 50 50 1 1 P
-X A 2 150 0 100 L 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
 # Device_RF_Shield_Two_Pieces
 #
 DEF Device_RF_Shield_Two_Pieces J 0 40 Y Y 1 F N
diff --git a/rf-analyzer/rf-analyzer.sch b/rf-analyzer/rf-analyzer.sch
index d0d79178d90c696f2dec214570588b60233039f6..d3c5d81e888222fd8768f4f738953c184b23e86c 100644
--- a/rf-analyzer/rf-analyzer.sch
+++ b/rf-analyzer/rf-analyzer.sch
@@ -1292,28 +1292,6 @@ fwd_sig_dc
 Wire Wire Line
 	6200 3100 6250 3100
 $Comp
-L Device:R_Small R?
-U 1 1 5F77CD96
-P 8500 3000
-F 0 "R?" V 8400 2950 50  0000 L CNN
-F 1 "170Ω" V 8600 2900 50  0000 L CNN
-F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 8500 3000 50  0001 C CNN
-F 3 "" H 8500 3000 50  0001 C CNN
-	1    8500 3000
-	0    1    1    0   
-$EndComp
-$Comp
-L Device:D_Zener D?
-U 1 1 5F7D1F53
-P 8650 3200
-F 0 "D?" V 8650 3050 50  0000 L CNN
-F 1 "3.3v" V 8750 3000 50  0000 L CNN
-F 2 "" H 8650 3200 50  0001 C CNN
-F 3 "~" H 8650 3200 50  0001 C CNN
-	1    8650 3200
-	0    1    1    0   
-$EndComp
-$Comp
 L power:GNDA #PWR?
 U 1 1 5F7D93FA
 P 8650 3400
@@ -1328,10 +1306,6 @@ Wire Wire Line
 	7350 3000 7400 3000
 Wire Wire Line
 	8600 3000 8650 3000
-Wire Wire Line
-	8650 3000 8650 3050
-Wire Wire Line
-	8650 3350 8650 3400
 $Comp
 L power:+5V #PWR?
 U 1 1 5F881898
@@ -1784,4 +1758,30 @@ F 3 "" H 1050 7550 50  0001 C CNN
 	1    1050 7550
 	1    0    0    -1  
 $EndComp
+$Comp
+L Device:R_Small R?
+U 1 1 5F77CD96
+P 8500 3000
+F 0 "R?" V 8400 2950 50  0000 L CNN
+F 1 "10KΩ" V 8600 2900 50  0000 L CNN
+F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 8500 3000 50  0001 C CNN
+F 3 "" H 8500 3000 50  0001 C CNN
+	1    8500 3000
+	0    1    1    0   
+$EndComp
+$Comp
+L Device:R_Small R?
+U 1 1 604D1349
+P 8650 3200
+F 0 "R?" V 8550 3150 50  0000 L CNN
+F 1 "30KΩ" V 8750 3100 50  0000 L CNN
+F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 8650 3200 50  0001 C CNN
+F 3 "" H 8650 3200 50  0001 C CNN
+	1    8650 3200
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	8650 3000 8650 3100
+Wire Wire Line
+	8650 3300 8650 3400
 $EndSCHEMATC