diff --git a/impl/src/main.c b/impl/src/main.c
index 031a220..16fd6e3 100644
--- a/impl/src/main.c
+++ b/impl/src/main.c
@@ -121,7 +121,7 @@ void cb_rx(rx_evt_t evt, uint8_t *packet_data, size_t packet_len)
 static int debug_fd;
 
 
-#define CHUNKSIZE_BB 512
+#define CHUNKSIZE_BB 16384
 #define CHUNKSIZE_RF (CHUNKSIZE_BB * SDR_OVERSAMPLING)
 static result_t transmit_in_chunks(sdr_ctx_t *sdr, const float complex *samples, size_t len)
 {