diff --git a/cfg/InOut/Inp_CommLink.txt b/cfg/InOut/Inp_CommLink.txt
new file mode 100644
index 000000000..cf81fbd38
--- /dev/null
+++ b/cfg/InOut/Inp_CommLink.txt
@@ -0,0 +1,42 @@
+<<<<<<<<<<<<<<<<<<<  42: Comm Link Description File   >>>>>>>>>>>>>>>>>>>
+0                    ! Number of Links
+===============================  Link 0  ================================
+S-Band Uplink        ! Description
+TRUE                 ! Comm Link Exists
+TRUE  10.0           ! Output Enabled, Interval (sec)
+FALSE 1.0E-3         ! Adjust Positions for Delay, Delay Accuracy (sec)
+UPLINK               ! Link Type (UPLINK, DOWNLINK, or CROSSLINK)
+3.0E9                ! Frequency (Hz)
+-200.0               ! Link Noise Floor (dBw)
+1  0                 ! Tx Terminal ID, Body
+0.0 0.0 0.0 123      ! Tx Mounting Angles (deg), Euler Sequence
+100.0                ! Tx Power (dBw)
+40.0  -50.0          ! Tx Antenna Peak Gain, Floor Gain (dB)
+"Ant_Gnd.obj"        ! Tx Antenna Pattern Mesh File
+0  0                 ! Rx Terminal ID, Body
+0.0 0.0 0.0 123      ! Rx Mounting Angles (deg), Euler Sequence
+10.0  -50.0          ! Rx Antenna Peak Gain, Floor Gain (dB)
+"Ant_SBand.obj"      ! Rx Antenna Pattern Mesh File
+-130.0               ! Rx System Noise Power (dBw)
+1.0                  ! Atmo Loss Mean (dB)
+0.1  10.0   100      ! Atmo Loss Ran Walk std (dB), Corr Time (sec), Seed
+===============================  Link 1  ================================
+X-Band Downlink      ! Description
+TRUE                 ! Comm Link Exists
+TRUE  20.0           ! Output Enabled, Interval (sec)
+TRUE 1.0E-6          ! Adjust Positions for Delay, Delay Accuracy (sec)
+DOWNLINK             ! Link Type (UPLINK, DOWNLINK, or CROSSLINK)
+10.0E9               ! Frequency (Hz)
+-200.0               ! Link Noise Floor (dBw)
+0  1                 ! Tx Terminal ID, Body
+0.0 0.0 0.0 123      ! Tx Mounting Angles (deg), Euler Sequence
+17.0                 ! Tx Power, (dBw)
+35.0  -50.0          ! Tx Antenna Peak Gain, Floor Gain (dB)
+"Ant_XBand.obj"      ! Tx Antenna Pattern File
+2  0                 ! Rx Terminal ID, Body
+0.0 0.0 0.0 123      ! Rx Mounting Angles (deg), Euler Sequence
+70.0  -50.0          ! Rx Antenna Peak Gain, Floor Gain (dB)
+"Ant_Gnd.obj"        ! Rx Antenna Pattern File
+-130.0               ! Rx System Noise Power (dBw)
+1.0                  ! Atmo Loss Mean (dB)
+0.1  10.0   101      ! Atmo Loss Ran Walk std (dB), Corr Time (sec), Seed
diff --git a/scripts/cfg/prepare.sh b/scripts/cfg/prepare.sh
index cc9041bf0..181f782a1 100755
--- a/scripts/cfg/prepare.sh
+++ b/scripts/cfg/prepare.sh
@@ -25,7 +25,7 @@ echo ""
 
 echo "Prepare 42..."
 cd $USER_NOS3_DIR
-git clone https://github.com/nasa-itc/42.git --depth 1 -b nos3-main
+git clone https://github.com/nasa-itc/42.git --depth 1 -b dev_20260403
 cd $USER_NOS3_DIR/42
 $DFLAGS_CPUS -v $BASE_DIR:$BASE_DIR -v $USER_NOS3_DIR:$USER_NOS3_DIR -w $USER_NOS3_DIR/42 --name "nos3_42_build" $DBOX make
 echo ""