diff --git a/overlay/etc/skel/.local/share/emcomm-tools/voacap/et-voacap.sh b/overlay/etc/skel/.local/share/emcomm-tools/voacap/et-voacap.sh
index dd825ef..8006875 100755
--- a/overlay/etc/skel/.local/share/emcomm-tools/voacap/et-voacap.sh
+++ b/overlay/etc/skel/.local/share/emcomm-tools/voacap/et-voacap.sh
@@ -143,7 +143,7 @@ usage() {
   echo "ETC GPS unit or fallback to the grid square configured by 'et-user'."
   echo 
   echo "Other options (required):"
-  echo "  -p POWER                  Output power [5|20|100|500|1500]"
+  echo "  -p POWER                  Output power [5|10|20|50|100|500|1500]"
   echo "  -m MODE                   Mode [am|ardop|cw|js8|ssb]"
   echo
 
@@ -288,15 +288,22 @@ RK1=$( awk -v n1=$RK -v n2=180 -v n3=-180 'BEGIN {if (n1<n3 || n1>n2) printf ("%
 RLO=$( awk -v n1=$RK1 -v n2=0 'BEGIN {if (n1<n2) { n1=substr(n1,2); printf ("%7sW", n1); } else printf ("%7sE", n1);}' )
 
 # Power settings 
-# Use 80% of user-defined power and express in killiwatts
-# TODO: Make calculation dynamic. 
+# Use 80% of user-defined power and express it in killiwatts since VOACAP's
+# power setting is the power at the feedpoint not the transmitter.
+#
+# PW=(PWR×0.8)/1000
+#
 PWR=$power
 PW="0.0800"
 echo "TX Power: ${PWR} watts"
 if [ "$PWR" = "5" ]; then
   PW="0.0040"
+elif [ "$PWR" = "10" ]; then
+  PW="0.0080"
 elif [ "$PWR" = "20" ]; then
   PW="0.0160"
+elif [ "$PWR" = "50" ]; then
+  PW="0.0400"
 elif [ "$PWR" = "100" ]; then
   PW="0.0800"
 elif [ "$PWR" = "500" ]; then