diff --git a/lib/microwaveprop_web/live/contact_live/show.ex b/lib/microwaveprop_web/live/contact_live/show.ex
index dbe20ccb..2202217d 100644
--- a/lib/microwaveprop_web/live/contact_live/show.ex
+++ b/lib/microwaveprop_web/live/contact_live/show.ex
@@ -1403,13 +1403,16 @@ defmodule MicrowavepropWeb.ContactLive.Show do
          {:ok, profile} <- safe_fetch_elevation(lat1, lon1, lat2, lon2) do
       freq_ghz = band_to_ghz(contact.band)
       dist_km = haversine_km(lat1, lon1, lat2, lon2)
-      analysis = TerrainAnalysis.analyse(profile, dist_km, freq_ghz)
+      # Assume both stations are at 10 ft (3.048 m) AGL so the path
+      # analysis doesn't pretend the antennas are sitting on the dirt.
+      ant_ht_m = 3.048
+      analysis = TerrainAnalysis.analyse(profile, dist_km, freq_ghz, ant_ht_a: ant_ht_m, ant_ht_b: ant_ht_m)
 
       fwd_az = initial_bearing(lat1, lon1, lat2, lon2)
       rev_az = initial_bearing(lat2, lon2, lat1, lon1)
 
-      tx_elev = hd(profile).elev
-      rx_elev = List.last(profile).elev
+      tx_elev = hd(profile).elev + ant_ht_m
+      rx_elev = List.last(profile).elev + ant_ht_m
       fwd_el = elevation_angle(tx_elev, rx_elev, dist_km * 1000)
       rev_el = elevation_angle(rx_elev, tx_elev, dist_km * 1000)