diff --git a/from-docs/imt/imt.1-3GHz.single-bs.aas-macro-bs.yaml b/from-docs/imt/imt.1-3GHz.single-bs.aas-macro-bs.yaml
index a2b7395..9d54c13 100644
--- a/from-docs/imt/imt.1-3GHz.single-bs.aas-macro-bs.yaml
+++ b/from-docs/imt/imt.1-3GHz.single-bs.aas-macro-bs.yaml
@@ -341,7 +341,6 @@ imt:
     #                                    "ABG" (Alpha-Beta-Gamma)
     #                                    "P619"
     channel_model: UMa
-    season: SUMMER
     ###########################################################################
     # Adjustment factor for LoS probability in UMi path loss model.
     #       Original value: 18 (3GPP)
diff --git a/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-340km.yaml b/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-340km.yaml
index 02e3ea5..0620fd6 100644
--- a/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-340km.yaml
+++ b/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-340km.yaml
@@ -161,6 +161,9 @@ imt:
                 # Radial (l_r) and transverse (l_t) sizes of the effective radiating area of the satellite transmitt antenna (m)
                 l_r: 1.6
                 l_t: 1.6
+                # Frequency of operation (MHz) - used to calculate wavelength
+                # This value is fixed independently of system frequency because D/lambda is kept constant.
+                frequency: 2000
             array:
                 ###########################################################################
                 # If normalization of M2101 should be applied for BS
diff --git a/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-525km.yaml b/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-525km.yaml
index 5c9f7ae..542d8c3 100644
--- a/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-525km.yaml
+++ b/from-docs/imt/imt.2110-2200MHz.mss-dc.system3-525km.yaml
@@ -151,6 +151,9 @@ imt:
                 # Radial (l_r) and transverse (l_t) sizes of the effective radiating area of the satellite transmitt antenna (m)
                 l_r: 1.6
                 l_t: 1.6
+                # Frequency of operation (MHz) - used to calculate wavelength
+                # This value is fixed independently of system frequency because D/lambda is kept constant.
+                frequency: 2000
             array:
                 ###########################################################################
                 # If normalization of M2101 should be applied for BS
diff --git a/from-docs/system/mss-dc/system-3.2110-2200MHz.340km.yaml b/from-docs/system/mss-dc/system-3.2110-2200MHz.340km.yaml
index 3f18405..8f58bff 100644
--- a/from-docs/system/mss-dc/system-3.2110-2200MHz.340km.yaml
+++ b/from-docs/system/mss-dc/system-3.2110-2200MHz.340km.yaml
@@ -47,6 +47,9 @@ mss_d2d:
         # Radial (l_r) and transverse (l_t) sizes of the effective radiating area of the satellite transmitt antenna (m)
         l_r: 1.6
         l_t: 1.6
+        # Frequency of operation (MHz) - used to calculate wavelength
+        # This value is fixed independently of system frequency because D/lambda is kept constant.
+        frequency: 2000
     sat_is_active_if: # (PER SCENARIO)
         # for a satellite to be active, it needs to respect ALL conditions
         conditions:
diff --git a/from-docs/system/mss-dc/system-3.2110-2200MHz.525km.yaml b/from-docs/system/mss-dc/system-3.2110-2200MHz.525km.yaml
index 61fa8ae..7dba631 100644
--- a/from-docs/system/mss-dc/system-3.2110-2200MHz.525km.yaml
+++ b/from-docs/system/mss-dc/system-3.2110-2200MHz.525km.yaml
@@ -51,6 +51,9 @@ mss_d2d:
         # Radial (l_r) and transverse (l_t) sizes of the effective radiating area of the satellite transmitt antenna (m)
         l_r: 1.6
         l_t: 1.6
+        # Frequency of operation (MHz) - used to calculate wavelength
+        # This value is fixed independently of system frequency because D/lambda is kept constant.
+        frequency: 2000
     sat_is_active_if: # (PER SCENARIO)
         # for a satellite to be active, it needs to respect ALL conditions
         conditions: