diff --git a/gr-jay/grc/jay_peak_manager.xml b/gr-jay/grc/jay_peak_manager.xml
index 5ed97fe..6091e82 100644
--- a/gr-jay/grc/jay_peak_manager.xml
+++ b/gr-jay/grc/jay_peak_manager.xml
@@ -24,5 +24,10 @@
     <type>message</type>
     <optional>1</optional>
   </source>
+  <source>
+    <name>freq</name>
+    <type>message</type>
+    <optional>1</optional>
+  </source>
 </block>
 
diff --git a/gr-jay/lib/peak_detect_impl.cc b/gr-jay/lib/peak_detect_impl.cc
index 2420f26..2cf0d27 100644
--- a/gr-jay/lib/peak_detect_impl.cc
+++ b/gr-jay/lib/peak_detect_impl.cc
@@ -319,8 +319,15 @@ namespace gr {
 				{
 					if (temp[j].isInRange(peak))
 					{
-						temp[j].merge(peak);
+						bool changed = temp[j].update(peak);
 						found = true;
+						if (changed)
+						{
+							pmt::pmt_t dict = temp[j].msg(1);
+							message_port_pub(m_msg_port_out, dict);
+							add_item_tag(DATA, nitems_written(DATA) + k, pmt::string_to_symbol(std::string("peak")), dict, m_tag_id);
+						}
+	
 						break;
 					}
 				}
diff --git a/gr-jay/lib/peak_detect_impl.h b/gr-jay/lib/peak_detect_impl.h
index bf94aaf..7752c7c 100644
--- a/gr-jay/lib/peak_detect_impl.h
+++ b/gr-jay/lib/peak_detect_impl.h
@@ -149,18 +149,23 @@ namespace jay {
 				return pbh > 0;
 			}
 			
-			const Peak& merge(const Peak &other)
+			bool update(const Peak &other)
 			{
-				float beta = 0.5f;
-				float alpha = (1.f-beta);
-				float pos_f = alpha*(float)pos + beta*(float)other.pos;
-				float pbh_f = alpha*(float)pbh + beta*(float)other.pbh;
-				float frequency = alpha*(float)frequency + beta*(float)other.frequency;
-				pos = (int)(pos_f + 0.5f);
-				pbh = (int)(pbh_f + 0.5f);
+				bool changed = false;
+				if (pos != other.pos)
+				{
+					changed = true;
+				}
+				if (std::abs(frequency-other.frequency) >= (0.01*1e6))
+				{
+					changed = true;
+				}
+				frequency = other.frequency;
+				pos = other.pos;
+				pbh = other.pbh;
 				height_rel = other.height_rel;
 				height_abs = other.height_abs;
-				return *this;
+				return changed;
 			}
 			
 			int left() const
diff --git a/gr-jay/python/peak_manager.py b/gr-jay/python/peak_manager.py
index ab1a69f..c4d3be8 100644
--- a/gr-jay/python/peak_manager.py
+++ b/gr-jay/python/peak_manager.py
@@ -34,17 +34,38 @@ class peak_manager(gr.basic_block):
 								out_sig=None)
 
 		self.test = test
+		self.numFrequencies = 1
+		self.peak_dict = {}
 
 		print ("test       : ", test)
 
 		# Register in / out message ports
 		self.message_port_register_in(pmt.intern("control"))
 		self.message_port_register_out(pmt.intern("status"))
+		self.message_port_register_out(pmt.intern("freq"))
 
 		# Register in message handler
 		self.set_msg_handler(pmt.intern("control"), self.msg_handler)
 
-		#self.message_port_pub(pmt.intern("port name"), < pmt message >)
+
+
+	def peak_add(self, key, peak):
+		if len(self.peak_dict) < self.numFrequencies:
+			self.peak_dict[key] = peak
+			return True
+		return False
+
+	def peak_del(self, key):
+		if key in self.peak_dict:
+			self.peak_dict.pop(key, None)
+			return True
+		return False
+
+	def peak_get(self, key):
+		result = None
+		if key in self.peak_dict:
+			result = self.peak_dict[key]
+		return result
 
 	def msg_handler(self, msg):
 		if pmt.is_dict(msg):
@@ -76,8 +97,24 @@ class peak_manager(gr.basic_block):
 
 			if peak['state'] == 1:
 				print ("New peak #{} at {:0.2f} MHz".format(id, freq_MHz))
+				peak_key = 'peak' + str(id)
+
+				peak0 = self.peak_get(peak_key)
+
+				if peak0 is not None:
+					pair = pmt.cons(pmt.intern("freq"), pmt.from_float(peak['freq_Hz']))
+					print("Update " + peak_key)
+					self.message_port_pub(pmt.intern("freq"), pair)
+				elif self.peak_add(peak_key, peak):
+					pair = pmt.cons(pmt.intern("freq"), pmt.from_float(peak['freq_Hz']))
+					print("Added " + peak_key)
+					self.message_port_pub(pmt.intern("freq"), pair)
 			else:
 				print ("Lost peak #{} at {:0.2f} MHz".format(id, freq_MHz))
+				peak_key = 'peak' + str(id)
+				if self.peak_del(peak_key):
+					print("Deleted " + peak_key)
+
 
 		else:
 			print(pmt.symbol_to_string(msg))