diff --git a/firmware/scripts/wspr_coding.c b/firmware/scripts/wspr_coding.c
new file mode 100644
index 0000000..193d2dd
--- /dev/null
+++ b/firmware/scripts/wspr_coding.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <ctype.h>
+#include <stdint.h>
+
+uint8_t wspr_call_char(char c) {
+	c = toupper(c);
+	if(c >= '0' && c <= '9') {
+		return c - '0';
+	}
+	else if(c >= 'A' && c <= 'Z') {
+		return 10 + (c - 'A');
+	}
+	// Turn everything else to space
+	else {
+		return 36;
+	}
+}
+
+uint8_t wspr_loc_char(char c) {
+	c = toupper(c);
+	if(c >= '0' && c <= '9') {
+		return c - '0';
+	}
+	else if(c >= 'A' && c <= 'R') {
+		return c - 'A';
+	}
+	// Everthing else becomes 9/I
+	else {
+		return 9;
+	}
+}
+
+uint8_t wspr_power(uint8_t power) {
+	if(power > 60) {
+		return 60;
+	}
+	return power;
+}
+
+uint64_t wspr_message(char *call, char* loc, uint8_t power) {
+	uint32_t m, n;
+
+	n = wspr_loc_char(call[0]);
+	n = n * 36 + wspr_loc_char(call[1]);
+	n = n * 10 + wspr_loc_char(call[2]);
+	n = n * 27 + wspr_loc_char(call[3]) - 10;
+	n = n * 27 + wspr_loc_char(call[4]) - 10;
+	n = n * 27 + wspr_loc_char(call[5]) - 10;
+
+	m = 179 - 10 * wspr_loc_char(loc[0]) - wspr_loc_char(loc[2]);
+	m = m * 180 + 10 * wspr_loc_char(loc[1]) + wspr_loc_char(loc[3]);
+	m = m * 128 + wspr_power(power) + 64;
+
+	return n << 21 | m;
+}
+
+
+
+int main(int argc, char const *argv[]) {
+
+
+
+
+
+	return 0;
+}