diff --git a/utils/sdr/airspy.py b/utils/sdr/airspy.py
index 36ae824..fcf2127 100644
--- a/utils/sdr/airspy.py
+++ b/utils/sdr/airspy.py
@@ -99,7 +99,8 @@ class AirspyCommandBuilder(CommandBuilder):
     def build_adsb_command(
         self,
         device: SDRDevice,
-        gain: Optional[float] = None
+        gain: Optional[float] = None,
+        bias_t: bool = False
     ) -> list[str]:
         """
         Build dump1090/readsb command with SoapySDR support for ADS-B decoding.
@@ -119,6 +120,9 @@ class AirspyCommandBuilder(CommandBuilder):
         if gain is not None:
             cmd.extend(['--gain', str(int(gain))])
 
+        if bias_t:
+            cmd.extend(['--enable-bias-t'])
+
         return cmd
 
     def build_ism_command(
diff --git a/utils/sdr/base.py b/utils/sdr/base.py
index 9941b09..5755dd0 100644
--- a/utils/sdr/base.py
+++ b/utils/sdr/base.py
@@ -118,7 +118,8 @@ class CommandBuilder(ABC):
     def build_adsb_command(
         self,
         device: SDRDevice,
-        gain: Optional[float] = None
+        gain: Optional[float] = None,
+        bias_t: bool = False
     ) -> list[str]:
         """
         Build ADS-B decoder command.
@@ -126,6 +127,7 @@ class CommandBuilder(ABC):
         Args:
             device: The SDR device to use
             gain: Gain in dB (None for auto)
+            bias_t: Enable bias-T power (for active antennas)
 
         Returns:
             Command as list of strings for subprocess
diff --git a/utils/sdr/hackrf.py b/utils/sdr/hackrf.py
index acb7c54..562e201 100644
--- a/utils/sdr/hackrf.py
+++ b/utils/sdr/hackrf.py
@@ -96,7 +96,8 @@ class HackRFCommandBuilder(CommandBuilder):
     def build_adsb_command(
         self,
         device: SDRDevice,
-        gain: Optional[float] = None
+        gain: Optional[float] = None,
+        bias_t: bool = False
     ) -> list[str]:
         """
         Build dump1090/readsb command with SoapySDR support for ADS-B decoding.
@@ -116,6 +117,9 @@ class HackRFCommandBuilder(CommandBuilder):
         if gain is not None:
             cmd.extend(['--gain', str(int(gain))])
 
+        if bias_t:
+            cmd.extend(['--enable-bias-t'])
+
         return cmd
 
     def build_ism_command(
diff --git a/utils/sdr/limesdr.py b/utils/sdr/limesdr.py
index a8db3bd..c0405af 100644
--- a/utils/sdr/limesdr.py
+++ b/utils/sdr/limesdr.py
@@ -75,13 +75,15 @@ class LimeSDRCommandBuilder(CommandBuilder):
     def build_adsb_command(
         self,
         device: SDRDevice,
-        gain: Optional[float] = None
+        gain: Optional[float] = None,
+        bias_t: bool = False
     ) -> list[str]:
         """
         Build dump1090 command with SoapySDR support for ADS-B decoding.
 
         Uses dump1090 compiled with SoapySDR support, or readsb as alternative.
         Note: Requires dump1090 with SoapySDR support or readsb.
+        Note: LimeSDR does not support bias-T, parameter is ignored.
         """
         device_str = self._build_device_string(device)
 
diff --git a/utils/sdr/rtlsdr.py b/utils/sdr/rtlsdr.py
index ba6ed22..0b80c0d 100644
--- a/utils/sdr/rtlsdr.py
+++ b/utils/sdr/rtlsdr.py
@@ -81,7 +81,8 @@ class RTLSDRCommandBuilder(CommandBuilder):
     def build_adsb_command(
         self,
         device: SDRDevice,
-        gain: Optional[float] = None
+        gain: Optional[float] = None,
+        bias_t: bool = False
     ) -> list[str]:
         """
         Build dump1090 command for ADS-B decoding.
@@ -108,6 +109,9 @@ class RTLSDRCommandBuilder(CommandBuilder):
         if gain is not None:
             cmd.extend(['--gain', str(int(gain))])
 
+        if bias_t:
+            cmd.extend(['--enable-bias-t'])
+
         return cmd
 
     def build_ism_command(