diff --git a/src/zapit/include/zapit/channel.h b/src/zapit/include/zapit/channel.h
index c388c751b..b46c0cd5c 100644
--- a/src/zapit/include/zapit/channel.h
+++ b/src/zapit/include/zapit/channel.h
@@ -260,4 +260,61 @@ class CZapitChannel
 		};
 };
 
+struct CmpChannelBySat: public std::binary_function <const CZapitChannel * const, const CZapitChannel * const, bool>
+{
+	static bool comparetolower(const char a, const char b)
+	{
+		return tolower(a) < tolower(b);
+	};
+
+	bool operator() (const CZapitChannel * const c1, const CZapitChannel * const c2)
+	{
+		if(c1->getSatellitePosition() == c2->getSatellitePosition())
+			return std::lexicographical_compare(c1->getName().begin(), c1->getName().end(), c2->getName().begin(), c2->getName().end(), comparetolower);
+		else
+			return c1->getSatellitePosition() < c2->getSatellitePosition();
+		;
+	};
+};
+
+struct CmpChannelByFreq: public std::binary_function <const CZapitChannel * const, const CZapitChannel * const, bool>
+{
+	static bool comparetolower(const char a, const char b)
+	{
+		return tolower(a) < tolower(b);
+	};
+
+	bool operator() (const CZapitChannel * const c1, const CZapitChannel * const c2)
+	{
+		if(c1->getFreqId() == c2->getFreqId())
+			return std::lexicographical_compare(c1->getName().begin(), c1->getName().end(), c2->getName().begin(), c2->getName().end(), comparetolower);
+		else
+			return c1->getFreqId() < c2->getFreqId();
+		;
+	};
+};
+
+struct CmpChannelByChName: public std::binary_function <const CZapitChannel * const, const CZapitChannel * const, bool>
+{
+	static bool comparetolower(const char a, const char b)
+	{
+		return tolower(a) < tolower(b);
+	};
+
+	bool operator() (const CZapitChannel * const c1, const CZapitChannel * const c2)
+	{
+		return std::lexicographical_compare(c1->getName().begin(), c1->getName().end(), c2->getName().begin(), c2->getName().end(), comparetolower);
+	};
+};
+
+struct CmpChannelByChNum: public std::binary_function <const CZapitChannel * const, const CZapitChannel * const, bool>
+{
+	bool operator() (const CZapitChannel * const c1, const CZapitChannel * const c2)
+	{
+		return c1->number < c2->number;
+		;
+	};
+};
+
+
 #endif /* __zapit_channel_h__ */