diff --git a/impl/src/main.c b/impl/src/main.c
index c6096c9..5b61f87 100644
--- a/impl/src/main.c
+++ b/impl/src/main.c
@@ -227,9 +227,17 @@ int main(int argc, char **argv)
 	size_t total_samples = 0;
 	double next_stats_print_time = old + 0.5;
 
+	double retransmit_time = 0.0;
+
 	while(m_running) {
 		double now = get_hires_time();
 
+		if(retransmit_time != 0.0 && now >= retransmit_time) {
+			LOG(LVL_INFO, "Retransmit triggered.");
+			retransmit_time = 0.0;
+			layer2_tx_restart(&l2tx);
+		}
+
 		// fill the TX queue from the TUN device
 		layer2_tx_fill_packet_queue(&l2tx);
 
@@ -285,6 +293,8 @@ int main(int argc, char **argv)
 				// ensure that the buffer is full before TX is turned on to avoid transmitting empty buffers
 				RESULT_CHECK(transmit(&sdr, whole_burst, burst_len));
 
+				retransmit_time = get_hires_time() + 4.0;
+
 				if(!on_air) {
 					LOG(LVL_INFO, "RX -> TX");
 					RESULT_CHECK(sdr_stop_rx(&sdr));
@@ -296,7 +306,7 @@ int main(int argc, char **argv)
 				}
 
 				on_air = true;
-			} else if(on_air) { // ret == 0
+			} else if(on_air) { // TX on, but no more bursts to send
 				LOG(LVL_INFO, "TX -> RX");
 				RESULT_CHECK(sdr_flush_tx_buffer(&sdr));
 				RESULT_CHECK(layer1_rx_reset(&rx));