diff --git a/firmware/inc/hw_config/low-power-solar.h b/firmware/inc/hw_config/low-power-solar.h
index 6f915f7..d5880b4 100644
--- a/firmware/inc/hw_config/low-power-solar.h
+++ b/firmware/inc/hw_config/low-power-solar.h
@@ -168,8 +168,8 @@
 /**
  * Cycle Times
  */
-#define CYCLE_TIME_FAST		(60)
-#define CYCLE_TIME_SLOW		(120)
+#define CYCLE_TIME_FAST		(0)   /* shortest hibernate */
+#define CYCLE_TIME_SLOW		(100) /* once every two minutes */
 
 /**
  * Radio
diff --git a/firmware/inc/rtc.h b/firmware/inc/rtc.h
new file mode 100644
index 0000000..89927b6
--- /dev/null
+++ b/firmware/inc/rtc.h
@@ -0,0 +1,38 @@
+/*
+ * Initialised RTC to provide 1Hz event and interrupt
+ * Copyright (C) 2016  Richard Meadows <richardeoin>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef RTC_H
+#define RTC_H
+
+/* Counts seconds since last aprs */
+uint32_t get_since_aprs_s(void);
+void clear_since_aprs_s(void);
+
+/* Initialises RTC to provide 1Hz event and interrupt */
+void rtc_init(void);
+/* Sets the hibernate time */
+void rtc_hibernate_time(uint32_t time_s);
+
+
+#endif  /* RTC_H */
diff --git a/firmware/src/rtc.c b/firmware/src/rtc.c
index 7b06969..269e285 100644
--- a/firmware/src/rtc.c
+++ b/firmware/src/rtc.c
@@ -66,6 +66,16 @@ void rtc_init(void)
  * =============================================================================
  */
 
+/* Seconds since APRS transmission */
+uint32_t since_aprs_s = 0;
+uint32_t get_since_aprs_s(void) {
+  return since_aprs_s;
+}
+void clear_since_aprs_s(void) {
+  since_aprs_s = 0;
+}
+
+
 #define HIBERNATE_TIME_MAX	(3600) /* Hibernate should always be set lower that this */
 volatile uint32_t hibernate_time_s = 0;
 void run_kick(void);
@@ -77,8 +87,12 @@ uint32_t tick = 0;
  */
 void rtc_hibernate_time(uint32_t time_s)
 {
+  /* set hibernate time */
   hibernate_time_s = time_s;
-  tick = 20; /* start at t+20 seconds */
+
+  /* clear ticks */
+  since_aprs_s += tick;
+  tick = 0;
 }
 /**
  * Interrupt for RTC, called at 1Hz
@@ -90,12 +104,15 @@ void RTC_Handler(void)
 
     /* Check sleep time  */
     if (tick >= hibernate_time_s) {
-      /* Reset */
-      tick = 0;                              /* zero tick */
-      hibernate_time_s = HIBERNATE_TIME_MAX; /* set hibernate to max */
+      /* clear ticks */
+      since_aprs_s += tick;
+      tick = 0;
+
+      /* set hibernate time to max */
+      hibernate_time_s = HIBERNATE_TIME_MAX;
 
       /* Do something */
-      run_kick();
+
     } else {
       /* Increment tick */
       tick++;
diff --git a/firmware/src/sequencer.c b/firmware/src/sequencer.c
index 303c91d..06b57d8 100644
--- a/firmware/src/sequencer.c
+++ b/firmware/src/sequencer.c
@@ -34,6 +34,7 @@
 #include "location.h"
 #include "accumulator.h"
 #include "battery.h"
+#include "rtc.h"
 
 
 void rtty_telemetry(struct tracker_datapoint* dp);
@@ -55,10 +56,6 @@ void telemetry_sequence(struct tracker_datapoint* dp, uint32_t n)
   location_prefix_update(dp->latitude, dp->longitude);
   kick_the_watchdog();
 
-  /* DEATHWISH */
-  /* CEASE TRANSMISSIONS AT THE END OF 2016 */
-  if (dp->time.year > 2016) { return; }
-
   /* Telemetry */
 #if RF_TX_ENABLE
 #if TELEMETRY_ENABLE
@@ -79,38 +76,46 @@ void telemetry_sequence(struct tracker_datapoint* dp, uint32_t n)
 #endif  /* TELEMETRY_ENABLE */
 
 
+  /* CEASE APRS AT THE END OF 2016 */
+  if (dp->time.year > 2016) { return; }
+
   /* APRS */
 #if APRS_ENABLE
+  if (get_since_aprs_s() >= 60) { /* limit APRS frequency to once per minute */
+    clear_since_aprs_s();
 #if APRS_USE_GEOFENCE
-  if (location_aprs_should_tx()) { /* transmit only when we *should* */
+    if (location_aprs_should_tx()) { /* transmit only when we *should* */
 #endif
 
-    /* APRS */
-    aprs_telemetry(dp, n);
+      /* APRS */
+      aprs_telemetry(dp, n);
 
 #if APRS_USE_GEOFENCE
-  }
-#endif
-#endif  /* APRS_ENABLE */
-
-
-  /* ARISS */
-#if ARISS_ENABLE
-  if ((get_battery_use_state() == BATTERY_GOOD) &&        /* battery good, */
-      (get_battery_charge_state() == BATTERY_CHARGING) && /* receiving power and */
-      ((n % 4) == 0)) {                                   /* one-in-four times */
-#if ARISS_USE_GEOFENCE
-    if (location_aprs_could_tx()) { /* transmit anywhere it's not disallowed */
-#endif
-
-      /* ARISS */
-      ariss_telemetry(dp);
-
-#if ARISS_USE_GEOFENCE
     }
 #endif
-  }
+
+    /* CEASE ARISS AT THE END OF SEPTEMBER */
+    if (dp->time.month > 9) { return; }
+
+    /* ARISS */
+#if ARISS_ENABLE
+    if ((get_battery_use_state() == BATTERY_GOOD) &&        /* battery good, */
+        (get_battery_charge_state() == BATTERY_CHARGING) && /* receiving power and */
+        ((n % 3) == 0)) {                                   /* one-in-three times */
+#if ARISS_USE_GEOFENCE
+      if (location_aprs_could_tx()) { /* transmit anywhere it's not disallowed */
+#endif
+
+        /* ARISS */
+        ariss_telemetry(dp);
+
+#if ARISS_USE_GEOFENCE
+      }
+#endif
+    }
 #endif  /* ARISS_ENABLE */
+  }
+#endif  /* APRS_ENABLE */
 
 
 #endif  /* RF_TX_ENABLE */