--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pathloss/egli.c	Fri Oct 25 16:09:52 2024 +0000
@@ -0,0 +1,18 @@
+/*
+ * RF range calculation per Egli model
+ */
+
+#define	_GNU_SOURCE
+#include <math.h>
+#include "range_func.h"
+
+float rf_range_egli(float freq_mhz, float path_loss, float bts_ant_m,
+		    float ms_ant_m)
+{
+	float l, r, x;
+
+	l = 20.0f * log10f(freq_mhz / 40.0f);
+	r = path_loss - l;
+	x = bts_ant_m * ms_ant_m;
+	return sqrtf(x / pow10f(r / -20.0f));
+}