diff --git a/core/net/mac/tsch/tsch-slot-operation.c b/core/net/mac/tsch/tsch-slot-operation.c
index b2c89a44f..62a7942f4 100644
--- a/core/net/mac/tsch/tsch-slot-operation.c
+++ b/core/net/mac/tsch/tsch-slot-operation.c
@@ -154,6 +154,9 @@ static rtimer_clock_t volatile current_slot_start;
 /* Are we currently inside a slot? */
 static volatile int tsch_in_slot_operation = 0;
 
+/* If we are inside a slot, this tells the current channel */
+static uint8_t current_channel;
+
 /* Info about the link, packet and neighbor of
  * the current (or next) slot */
 struct tsch_link *current_link = NULL;
@@ -780,6 +783,7 @@ PT_THREAD(tsch_rx_slot(struct pt *pt, struct rtimer *t))
         NETSTACK_RADIO.get_value(RADIO_PARAM_LAST_RSSI, &radio_last_rssi);
         current_input->rx_asn = current_asn;
         current_input->rssi = (signed)radio_last_rssi;
+        current_input->channel = current_channel;
         header_len = frame802154_parse((uint8_t *)current_input->payload, current_input->len, &frame);
         frame_valid = header_len > 0 &&
           frame802154_check_dest_panid(&frame) &&
@@ -937,7 +941,6 @@ PT_THREAD(tsch_slot_operation(struct rtimer *t, void *ptr))
       );
 
     } else {
-      uint8_t current_channel;
       int is_active_slot;
       TSCH_DEBUG_SLOT_START();
       tsch_in_slot_operation = 1;
diff --git a/core/net/mac/tsch/tsch-slot-operation.h b/core/net/mac/tsch/tsch-slot-operation.h
index f74778c00..ec05d8736 100644
--- a/core/net/mac/tsch/tsch-slot-operation.h
+++ b/core/net/mac/tsch/tsch-slot-operation.h
@@ -89,7 +89,8 @@ struct input_packet {
   uint8_t payload[TSCH_PACKET_MAX_LEN]; /* Packet payload */
   struct asn_t rx_asn; /* ASN when the packet was received */
   int len; /* Packet len */
-  uint16_t rssi; /* RSSI for this packet */
+  int16_t rssi; /* RSSI for this packet */
+  uint8_t channel; /* Channel we received the packet on */
 };
 
 /***** External Variables *****/
diff --git a/core/net/mac/tsch/tsch.c b/core/net/mac/tsch/tsch.c
index 6e8556cd3..083280404 100644
--- a/core/net/mac/tsch/tsch.c
+++ b/core/net/mac/tsch/tsch.c
@@ -349,6 +349,7 @@ tsch_rx_process_pending()
       /* Copy to packetbuf for processing */
       packetbuf_copyfrom(current_input->payload, current_input->len);
       packetbuf_set_attr(PACKETBUF_ATTR_RSSI, current_input->rssi);
+      packetbuf_set_attr(PACKETBUF_ATTR_CHANNEL, current_input->channel);
     }
 
     /* Remove input from ringbuf */
@@ -549,10 +550,6 @@ tsch_associate(const struct input_packet *input_eb, rtimer_clock_t timestamp)
     if(n != NULL) {
       tsch_queue_update_time_source((linkaddr_t *)&frame.src_addr);
 
-#ifdef TSCH_CALLBACK_JOINING_NETWORK
-      TSCH_CALLBACK_JOINING_NETWORK();
-#endif
-
       /* Set PANID */
       frame802154_set_pan_id(frame.src_pid);
 
@@ -563,9 +560,13 @@ tsch_associate(const struct input_packet *input_eb, rtimer_clock_t timestamp)
       tsch_is_associated = 1;
       tsch_is_pan_secured = frame.fcf.security_enabled;
 
-      /* Association done, schedule keepalive messages */
+      /* Start sending keep-alives now that tsch_is_associated is set */
       tsch_schedule_keepalive();
 
+#ifdef TSCH_CALLBACK_JOINING_NETWORK
+      TSCH_CALLBACK_JOINING_NETWORK();
+#endif
+
       PRINTF("TSCH: association done, sec %u, PAN ID %x, asn-%x.%lx, jp %u, timeslot id %u, hopping id %u, slotframe len %u with %u links, from ",
              tsch_is_pan_secured,
              frame.src_pid,
@@ -909,7 +910,10 @@ send_packet(mac_callback_t sent, void *ptr)
     /* Enqueue packet */
     p = tsch_queue_add_packet(addr, sent, ptr);
     if(p == NULL) {
-      PRINTF("TSCH:! can't send packet !tsch_queue_add_packet\n");
+      PRINTF("TSCH:! can't send packet to %u with seqno %u, queue %u %u\n",
+          TSCH_LOG_ID_FROM_LINKADDR(addr), tsch_packet_seqno,
+          packet_count_before,
+          tsch_queue_packet_count(addr));
       ret = MAC_TX_ERR;
     } else {
       p->header_len = hdr_len;
@@ -982,6 +986,11 @@ turn_on(void)
 static int
 turn_off(int keep_radio_on)
 {
+  if(keep_radio_on) {
+    NETSTACK_RADIO.on();
+  } else {
+    NETSTACK_RADIO.off();
+  }
   return 1;
 }
 /*---------------------------------------------------------------------------*/