diff --git a/libspark/hardware_caps.c b/libspark/hardware_caps.c
index 2bbcfb4..166821f 100644
--- a/libspark/hardware_caps.c
+++ b/libspark/hardware_caps.c
@@ -69,7 +69,7 @@ hw_caps_t *get_hwcaps(void)
 					tmp = "GoldenMedia Triplex";
 					caps.has_SCART = 1;
 #ifdef MARTII
-					caps.dmx_offset = 1;
+					caps.dmx_offset = 1; // first sat tuner
 #endif
 					break;
 				default:
@@ -79,6 +79,11 @@ hw_caps_t *get_hwcaps(void)
 			tmp = "(NO STB_ID FOUND)";
 		strcpy(caps.boxname, tmp);
 	}
+#ifdef MARTII
+	char *fe_off = getenv("FE_OFFSET");
+	if (fe_off)
+		sscanf(fe_off, "%d", &caps.dmx_offset);
+#endif
 	fd = open (FP_DEV, O_RDWR);
 	if (fd != -1) {
 		ret = ioctl(fd, VFDGETVERSION, &val);