diff --git a/firmware/baseband/stream_input.hpp b/firmware/baseband/stream_input.hpp
index 8a810749..cb4bbe4e 100644
--- a/firmware/baseband/stream_input.hpp
+++ b/firmware/baseband/stream_input.hpp
@@ -52,6 +52,8 @@ public:
 		if( (bytes_written & event_bytes_mask) < (last_bytes_written & event_bytes_mask) ) {
 			creg::m4txevent::assert();
 		}
+		config->baseband_bytes_received += length;
+		config->baseband_bytes_dropped = config->baseband_bytes_received - bytes_written;
 
 		return written;
 	}
diff --git a/firmware/common/message.hpp b/firmware/common/message.hpp
index 1c906c61..bd53d352 100644
--- a/firmware/common/message.hpp
+++ b/firmware/common/message.hpp
@@ -413,6 +413,8 @@ public:
 struct CaptureConfig {
 	const size_t write_size_log2;
 	const size_t buffer_count_log2;
+	uint64_t baseband_bytes_received;
+	uint64_t baseband_bytes_dropped;
 	FIFO<uint8_t>* fifo;
 
 	constexpr CaptureConfig(
@@ -420,6 +422,8 @@ struct CaptureConfig {
 		const size_t buffer_count_log2
 	) : write_size_log2 { write_size_log2 },
 		buffer_count_log2 { buffer_count_log2 },
+		baseband_bytes_received { 0 },
+		baseband_bytes_dropped { 0 },
 		fifo { nullptr }
 	{
 	}