diff --git a/geomagio/Metadata.py b/geomagio/Metadata.py
index dec19252ea83794b728221f6bd7f7518f16d6e17..28bd1b66185eee43b365a3721de8b4b55fad6553 100644
--- a/geomagio/Metadata.py
+++ b/geomagio/Metadata.py
@@ -321,6 +321,61 @@ _INSTRUMENT_METADATA = [
             },
         },
     },
+    {
+        "network": "NT",
+        "station": "GUA",
+        "start_time": None,
+        "end_time": None,
+        "instrument": {
+            "type": "Narod",
+            "channels": {
+                "U": [
+                    {"channel": "U_Volt", "offset": 0, "scale": 100},
+                    {"channel": "U_Bin", "offset": 0, "scale": 500},
+                ],
+                "V": [
+                    {"channel": "V_Volt", "offset": 0, "scale": 100},
+                    {"channel": "V_Bin", "offset": 0, "scale": 500},
+                ],
+                "W": [
+                    {"channel": "W_Volt", "offset": 0, "scale": 100},
+                    {"channel": "W_Bin", "offset": 0, "scale": 500},
+                ],
+            },
+        },
+    },
+    {
+        "network": "NT",
+        "station": "GUT",
+        "start_time": None,
+        "end_time": None,
+        "instrument": {
+            "type": "FGE",
+            "channels": {
+                # each channel maps to a list of components to calculate nT
+                # TODO: calculate these lists based on "FGE" type
+                "U": [{"channel": "U_Volt", "offset": 0, "scale": 320.0}],
+                "V": [{"channel": "V_Volt", "offset": 0, "scale": 320.0}],
+                "W": [{"channel": "W_Volt", "offset": 0, "scale": 320.0}],
+            },
+            ## this info should get updated when available
+            # "electronics": {
+            #     "serial": "E0542",
+            #     # these scale values are used to convert voltage
+            #     "x-scale": 313.2,  # V/nT
+            #     "y-scale": 312.3,  # V/nT
+            #     "z-scale": 312.0,  # V/nT
+            #     "temperature-scale": 0.01,  # V/K
+            # },
+            # "sensor": {
+            #     "serial": "S0419",
+            #     # these constants combine with instrument setting for offset
+            #     "x-constant": 36958,  # nT/mA
+            #     "y-constant": 36849,  # nT/mA
+            #     "z-constant": 36811,  # nT/mA
+            # },
+        },
+    },
     {
         "network": "NT",
         "station": "HON",
@@ -344,6 +399,38 @@ _INSTRUMENT_METADATA = [
             },
         },
     },
+    {
+        "network": "NT",
+        "station": "HOT",
+        "start_time": None,
+        "end_time": None,
+        "instrument": {
+            "type": "FGE",
+            "channels": {
+                # each channel maps to a list of components to calculate nT
+                # TODO: calculate these lists based on "FGE" type
+                "U": [{"channel": "U_Volt", "offset": 0, "scale": 320.0}],
+                "V": [{"channel": "V_Volt", "offset": 0, "scale": 320.0}],
+                "W": [{"channel": "W_Volt", "offset": 0, "scale": 320.0}],
+            },
+            ## this info should get updated when available
+            # "electronics": {
+            #     "serial": "E0542",
+            #     # these scale values are used to convert voltage
+            #     "x-scale": 313.2,  # V/nT
+            #     "y-scale": 312.3,  # V/nT
+            #     "z-scale": 312.0,  # V/nT
+            #     "temperature-scale": 0.01,  # V/K
+            # },
+            # "sensor": {
+            #     "serial": "S0419",
+            #     # these constants combine with instrument setting for offset
+            #     "x-constant": 36958,  # nT/mA
+            #     "y-constant": 36849,  # nT/mA
+            #     "z-constant": 36811,  # nT/mA
+            # },
+        },
+    },
     {
         "network": "NT",
         "station": "NEW",