diff --git a/cpu/nrf52/radio/nrf802154/nrf802154.c b/cpu/nrf52/radio/nrf802154/nrf802154.c
index 297dae83de..d48f27e710 100644
--- a/cpu/nrf52/radio/nrf802154/nrf802154.c
+++ b/cpu/nrf52/radio/nrf802154/nrf802154.c
@@ -68,7 +68,7 @@ static uint8_t txbuf[IEEE802154_FRAME_LEN_MAX + 3]; /* len PHR + PSDU + LQI */
 #define LIFS                (40U)
 #define SIFS                (12U)
 #define SIFS_MAXPKTSIZE     (18U)
-#define TIMER_FREQ          (250000UL)
+#define TIMER_FREQ          (62500UL)
 static volatile uint8_t _state;
 static mutex_t _txlock;
 
@@ -189,7 +189,6 @@ static void _timer_cb(void *arg, int chan)
     (void)chan;
     mutex_unlock(&_txlock);
     timer_stop(NRF802154_TIMER);
-    timer_clear(NRF802154_TIMER, 0);
 }
 
 static int _init(netdev_t *dev)
@@ -199,6 +198,7 @@ static int _init(netdev_t *dev)
     int result = timer_init(NRF802154_TIMER, TIMER_FREQ, _timer_cb, NULL);
     assert(result >= 0);
     (void)result;
+    timer_stop(NRF802154_TIMER);
 
     /* initialize local variables */
     mutex_init(&_txlock);
@@ -232,6 +232,9 @@ static int _init(netdev_t *dev)
     NRF_RADIO->CRCPOLY = 0x011021;
     NRF_RADIO->CRCINIT = 0;
 
+    /* Disable the hardware IFS handling  */
+    NRF_RADIO->MODECNF0 |= RADIO_MODECNF0_RU_Msk;
+
     /* assign default addresses */
     luid_get(nrf802154_dev.long_addr, IEEE802154_LONG_ADDRESS_LEN);
     memcpy(nrf802154_dev.short_addr, &nrf802154_dev.long_addr[6],
@@ -285,7 +288,7 @@ static int _send(netdev_t *dev,  const iolist_t *iolist)
     /* set interframe spacing based on packet size */
     unsigned int ifs = (len + IEEE802154_FCS_LEN > SIFS_MAXPKTSIZE) ? LIFS
                                                                     : SIFS;
-    timer_set_absolute(NRF802154_TIMER, 0, ifs);
+    timer_set(NRF802154_TIMER, 0, ifs);
 
     return len;
 }