diff --git a/db/api/filters.py b/db/api/filters.py
index 0c16fcd..e52e229 100644
--- a/db/api/filters.py
+++ b/db/api/filters.py
@@ -1,5 +1,6 @@
 """SatNOGS DB django rest framework Filters class"""
 import django_filters
+from django_filters import Filter
 from django_filters import rest_framework as filters
 from django_filters.rest_framework import FilterSet
 
@@ -7,6 +8,18 @@ from db.base.models import SATELLITE_STATUS, Artifact, DemodData, LatestTleSet,
     Transmitter
 
 
+class ListFilter(Filter):
+    """Custom Filter to use list"""
+    def filter(self, qs, value):
+        """Returns a QuerySet using list of values as input"""
+        if value:
+            value_list = value.replace(' ', '').split(u',')
+            kwargs = {'{0}__in'.format(self.field_name): value_list}
+            return qs.filter(**kwargs)
+
+        return qs
+
+
 class TransmitterViewFilter(FilterSet):
     """SatNOGS DB Transmitter API View Filter"""
     alive = filters.BooleanFilter(field_name='status', label='Alive', method='filter_status')
@@ -27,6 +40,39 @@ class TransmitterViewFilter(FilterSet):
     satellite__norad_cat_id = filters.NumberFilter(
         field_name='satellite__satellite_entry__norad_cat_id', label='Satellite NORAD ID'
     )
+    sat_id = django_filters.CharFilter(
+        method='get_current_sat_transmitter_from_sat_id', label='Satellite ID'
+    )
+
+    # pylint: disable=W0613,R0201
+    def get_current_sat_transmitter_from_sat_id(self, queryset, field_name, value):
+        """Return the transmitter from the parent satellite in case a merged
+
+        satellite id is searched
+        """
+        if value:
+            id_list = value.replace(' ', '').split(u',')
+            parent_id_list = []
+
+            qs = Satellite.objects.select_related('associated_satellite').filter(
+                satellite_entry__approved=True, satellite_identifier__sat_id__in=id_list
+            )
+
+            try:
+                sats = qs.all()
+                for sat in sats:
+                    if sat.associated_satellite is None:
+                        parent_id_list.append(sat.id)
+                    else:
+                        parent_id_list.append(sat.associated_satellite.id)
+            except Satellite.DoesNotExist:
+                return qs
+
+            return Transmitter.objects.select_related('satellite__associated_satellite').filter(
+                satellite__satellite_entry__approved=True, satellite__id__in=parent_id_list
+            )
+
+        return queryset
 
     class Meta:
         model = Transmitter
@@ -52,6 +98,31 @@ class SatelliteViewFilter(FilterSet):
     norad_cat_id = filters.NumberFilter(
         field_name='satellite_entry__norad_cat_id', label='Satellite NORAD ID'
     )
+    sat_id = django_filters.CharFilter(method='get_current_sat_from_sat_id', label='Satellite ID')
+
+    # pylint: disable=W0613,R0201
+    def get_current_sat_from_sat_id(self, queryset, field_name, value):
+        """Return the parent Satellite in case a merged
+
+        satellite id is searched
+        """
+        if value:
+            qs = Satellite.objects.select_related('associated_satellite').filter(
+                satellite_entry__approved=True, satellite_identifier__sat_id=value
+            )
+            try:
+                sat = qs.get()
+                if sat.associated_satellite is None:
+                    return qs
+
+                qs = Satellite.objects.filter(
+                    satellite_entry__approved=True, id=sat.associated_satellite.id
+                )
+                return qs
+            except Satellite.DoesNotExist:
+                return qs
+
+        return queryset
 
     class Meta:
         model = Satellite
@@ -65,6 +136,7 @@ class TelemetryViewFilter(FilterSet):
         lookup_expr='exact',
         label='Satellite NORAD ID'
     )
+    sat_id = ListFilter(field_name='satellite__satellite_identifier__sat_id', label='Satellite ID')
     start = django_filters.IsoDateTimeFilter(field_name='timestamp', lookup_expr='gte')
     end = django_filters.IsoDateTimeFilter(field_name='timestamp', lookup_expr='lte')
 
@@ -80,6 +152,7 @@ class LatestTleSetViewFilter(FilterSet):
         lookup_expr='exact',
         label='Satellite NORAD ID'
     )
+    sat_id = ListFilter(field_name='satellite__satellite_identifier__sat_id', label='Satellite ID')
 
     class Meta:
         model = LatestTleSet
diff --git a/db/api/views.py b/db/api/views.py
index 584ec22..9ed8654 100644
--- a/db/api/views.py
+++ b/db/api/views.py
@@ -278,7 +278,7 @@ class TransmitterViewSet(  # pylint: disable=R0901
     ]
     parser_classes = [JSONLDParser]
     queryset = Transmitter.objects.filter(
-        satellite__associated_satellite__isnull=True, satellite__satellite_entry__approved=True
+        satellite__satellite_entry__approved=True, satellite__associated_satellite__isnull=True
     ).exclude(status='invalid')
     serializer_class = serializers.TransmitterSerializer
     filterset_class = filters.TransmitterViewFilter