diff --git a/src/main/java/ru/r2cloud/jradio/BeaconInputStream.java b/src/main/java/ru/r2cloud/jradio/BeaconInputStream.java
index fe9459ce..2b834df7 100644
--- a/src/main/java/ru/r2cloud/jradio/BeaconInputStream.java
+++ b/src/main/java/ru/r2cloud/jradio/BeaconInputStream.java
@@ -29,6 +29,8 @@ public boolean hasNext() {
 				int protocolVersion = is.readInt();
 				if (protocolVersion == BeaconOutputStream.PROTOCOL_V2) {
 					current = readProtocolv2();
+				} else if (protocolVersion == BeaconOutputStream.PROTOCOL_V3) {
+					current = readProtocolv3();
 				} else {
 					return false;
 				}
@@ -66,6 +68,12 @@ private T readProtocolv2() throws Exception {
 		return result;
 	}
 
+	private T readProtocolv3() throws Exception {
+		T result = readProtocolv2();
+		result.setEndSample(is.readLong());
+		return result;
+	}
+
 	@Override
 	public T next() {
 		if (current == null) {
diff --git a/src/main/java/ru/r2cloud/jradio/BeaconOutputStream.java b/src/main/java/ru/r2cloud/jradio/BeaconOutputStream.java
index 779f87c9..4a3621f4 100644
--- a/src/main/java/ru/r2cloud/jradio/BeaconOutputStream.java
+++ b/src/main/java/ru/r2cloud/jradio/BeaconOutputStream.java
@@ -8,6 +8,7 @@
 public class BeaconOutputStream implements Closeable {
 
 	public static final int PROTOCOL_V2 = 1;
+	public static final int PROTOCOL_V3 = 2;
 	private final DataOutputStream dos;
 
 	public BeaconOutputStream(OutputStream os) {
@@ -19,7 +20,7 @@ public void write(Beacon beacon) throws IOException {
 			return;
 		}
 		dos.writeInt(0);
-		dos.writeInt(PROTOCOL_V2);
+		dos.writeInt(PROTOCOL_V3);
 		dos.writeInt(beacon.getRawData().length);
 		dos.write(beacon.getRawData());
 		dos.writeLong(beacon.getBeginMillis());
@@ -46,6 +47,7 @@ public void write(Beacon beacon) throws IOException {
 			dos.writeFloat(0.0f);
 			dos.writeLong(0);
 		}
+		dos.writeLong(beacon.getEndSample());
 	}
 
 	@Override
diff --git a/src/test/java/ru/r2cloud/jradio/BeaconInputStreamTest.java b/src/test/java/ru/r2cloud/jradio/BeaconInputStreamTest.java
index d3d4a4ea..364c00cb 100644
--- a/src/test/java/ru/r2cloud/jradio/BeaconInputStreamTest.java
+++ b/src/test/java/ru/r2cloud/jradio/BeaconInputStreamTest.java
@@ -28,6 +28,7 @@ public void testReadWrite() throws Exception {
 		meta.setSnr(1.22f);
 		meta.setFrequencyError(1001l);
 		data.setRxMeta(meta);
+		data.setEndSample(2L);
 
 		bos.write(data);
 		bos.close();
@@ -42,13 +43,33 @@ public void testReadWrite() throws Exception {
 		assertEquals(data.getRxMeta().getRssi(), actual.getRxMeta().getRssi(), 0.0001);
 		assertEquals(data.getRxMeta().getSnr(), actual.getRxMeta().getSnr(), 0.0001);
 		assertEquals(data.getRxMeta().getFrequencyError(), actual.getRxMeta().getFrequencyError());
+		assertEquals(data.getEndSample(), actual.getEndSample());
 		assertArrayEquals(data.getRawData(), actual.getRawData());
 		assertFalse(bis.hasNext());
 		bis.close();
 	}
 
 	@Test
-	public void testOldFormat() throws Exception {
+	public void testv2Format() throws Exception {
+		byte[] data = new byte[] { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 1, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 63, -99, 112, -92, 63, -100, 40, -10, 0, 0, 0, 0, 0, 0, 3, -23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+		ByteArrayInputStream bais = new ByteArrayInputStream(data);
+		BeaconInputStream<RawBeacon> bis = new BeaconInputStream<>(bais, RawBeacon.class);
+		assertTrue(bis.hasNext());
+		Beacon actual = bis.next();
+		assertNotNull(actual);
+		assertEquals(1L, actual.getBeginMillis());
+		assertEquals(1L, actual.getBeginSample());
+		assertArrayEquals(new byte[] { 0x01, 0x02 }, actual.getRawData());
+		assertNotNull(actual.getRxMeta());
+		assertEquals(1.23f, actual.getRxMeta().getRssi(), 0.0f);
+		assertEquals(1.22f, actual.getRxMeta().getSnr(), 0.0f);
+		assertEquals(1001L, actual.getRxMeta().getFrequencyError().longValue());
+		assertFalse(bis.hasNext());
+		bis.close();
+	}
+
+	@Test
+	public void testv1Format() throws Exception {
 		byte[] data = new byte[] { 0, 0, 0, 2, 1, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1 };
 		ByteArrayInputStream bais = new ByteArrayInputStream(data);
 		BeaconInputStream<RawBeacon> bis = new BeaconInputStream<>(bais, RawBeacon.class);