diff --git a/skyscraper8/Skyscraper/Drawing/RfFrequencyChartData.cs b/skyscraper8/Skyscraper/Drawing/RfFrequencyChartData.cs
index 2a13e01..4e0f001 100644
--- a/skyscraper8/Skyscraper/Drawing/RfFrequencyChartData.cs
+++ b/skyscraper8/Skyscraper/Drawing/RfFrequencyChartData.cs
@@ -119,11 +119,14 @@ namespace skyscraper8.Skyscraper.Drawing
 
 		public double[] Data { get; private set; }
 
-		public void Push(int i, double rf)
+		public bool Push(int i, double rf)
 		{
 			i -= MinimumFrequency;
 			i /= Step;
+			if (i >= Data.Length)
+				return false;
 			Data[i] = rf;
+			return true;
 		}
 	}
 }
diff --git a/skyscraper8/Skyscraper/FrequencyListGenerator/CoopBlindscanStreamReaderProxy.cs b/skyscraper8/Skyscraper/FrequencyListGenerator/CoopBlindscanStreamReaderProxy.cs
index 394d2b0..1ebba15 100644
--- a/skyscraper8/Skyscraper/FrequencyListGenerator/CoopBlindscanStreamReaderProxy.cs
+++ b/skyscraper8/Skyscraper/FrequencyListGenerator/CoopBlindscanStreamReaderProxy.cs
@@ -250,8 +250,7 @@ namespace skyscraper8.Skyscraper.FrequencyListGenerator
 			throw new NotImplementedException();
 		}
 
-		public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, nint pTab,
-			nint pBegin, nint pNum)
+		public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, uint[] pTab, ref uint pBegin, ref uint pNum)
 		{
 			throw new NotImplementedException();
 		}
diff --git a/skyscraper8/Skyscraper/FrequencyListGenerator/SatIpWithStreamReaderProxy.cs b/skyscraper8/Skyscraper/FrequencyListGenerator/SatIpWithStreamReaderProxy.cs
index f0b167c..04a19df 100644
--- a/skyscraper8/Skyscraper/FrequencyListGenerator/SatIpWithStreamReaderProxy.cs
+++ b/skyscraper8/Skyscraper/FrequencyListGenerator/SatIpWithStreamReaderProxy.cs
@@ -322,11 +322,10 @@ namespace skyscraper8.Skyscraper.FrequencyListGenerator
 		public bool FFTInit()
 		{
 			throw new NotImplementedException();
-		}
-
-		public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, nint pTab,
-			nint pBegin, nint pNum)
-		{
+		}
+
+        public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, uint[] pTab, ref uint pBegin, ref uint pNum)
+        {
 			throw new NotImplementedException();
 		}
 
diff --git a/skyscraper8/Skyscraper/IO/IStreamReader.cs b/skyscraper8/Skyscraper/IO/IStreamReader.cs
index f7e6fe9..cf31871 100644
--- a/skyscraper8/Skyscraper/IO/IStreamReader.cs
+++ b/skyscraper8/Skyscraper/IO/IStreamReader.cs
@@ -236,7 +236,22 @@ namespace skyscraper5.Skyscraper.IO
 
         bool FFTInit();
 
-        bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, IntPtr pTab, IntPtr pBegin, IntPtr pNum);
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="freq"></param>
+        /// <param name="pol"></param>
+        /// <param name="lof1"></param>
+        /// <param name="lof2"></param>
+        /// <param name="lofsw"></param>
+        /// <param name="range"></param>
+        /// <param name="mode">Set this to 5. This is a value known to work.</param>
+        /// <param name="nb_acc">Set this to 255. This is a value known to work.</param>
+        /// <param name="pTab"></param>
+        /// <param name="pBegin"></param>
+        /// <param name="pNum"></param>
+        /// <returns></returns>
+        bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, uint[] pTab, ref uint pBegin, ref uint pNum);
 
         /// <summary>
         /// Given an approximate satellite frequency, tune to the nearest channel.
diff --git a/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderClient.cs b/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderClient.cs
index c234777..61f01df 100644
--- a/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderClient.cs
+++ b/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderClient.cs
@@ -524,13 +524,50 @@ namespace skyscraper5.Skyscraper.IO.RemoteStreamReader
 
         public bool FFTInit()
         {
-            throw new NotImplementedException();
+            TcpStream.WriteUInt32BE((uint)RemoteStreamReaderConstants.REQUEST_FFT_INIT);
+
+            RemoteStreamReaderConstants result = (RemoteStreamReaderConstants)(TcpStream.ReadUInt32BE());
+            switch(result)
+            {
+                case RemoteStreamReaderConstants.COMMAND_SUCCESSFUL:
+                    return true;
+                case RemoteStreamReaderConstants.COMMAND_FAILED:
+                    return false;
+                default:
+                    throw new NotImplementedException(result.ToString());
+            }
         }
 
-        public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, IntPtr pTab,
-            IntPtr pBegin, IntPtr pNum)
+        public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, uint[] pTab, ref uint pBegin, ref uint pNum)
         {
-            throw new NotImplementedException();
+            TcpStream.WriteUInt32BE((uint)RemoteStreamReaderConstants.REQUEST_FFT_SCAN);
+            TcpStream.WriteInt32BE(freq);
+            TcpStream.WriteInt32BE(pol);
+            TcpStream.WriteInt32BE(lof1);
+            TcpStream.WriteInt32BE(lof2);
+            TcpStream.WriteInt32BE(lofsw);
+            TcpStream.WriteUInt32BE(range);
+            TcpStream.WriteUInt8(mode);
+            TcpStream.WriteUInt8(nb_acc);
+            TcpStream.WriteInt32BE(pTab.Length);
+
+            RemoteStreamReaderConstants result = (RemoteStreamReaderConstants)(TcpStream.ReadUInt32BE());
+            switch (result)
+            {
+                case RemoteStreamReaderConstants.COMMAND_SUCCESSFUL:
+                    pBegin = TcpStream.ReadUInt32BE();
+                    pNum = TcpStream.ReadUInt32BE();
+                    for (uint i = pBegin; i < pNum; i++)
+                    {
+                        pTab[i] = TcpStream.ReadUInt32BE();
+                    }
+
+                    return true;
+                case RemoteStreamReaderConstants.COMMAND_FAILED:
+                    return false;
+                default:
+                    throw new NotImplementedException();
+            }
         }
 
         public bool BLScan(int freq, int freq_range, int pol, int lof1, int lof2, int lofsw, int minsr,
diff --git a/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderConstants.cs b/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderConstants.cs
index 73f52a6..7c4a498 100644
--- a/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderConstants.cs
+++ b/skyscraper8/Skyscraper/IO/RemoteStreamReader/RemoteStreamReaderConstants.cs
@@ -42,6 +42,8 @@
 		REQUEST_SKYSCRAPER_ENGINE_NAME,
 		REQUEST_SKYSCRAPER_ENGINE_VERSION,
         REQUEST_RF_SCAN_2,
-		REQUEST_FFT_TERM
-	}
+		REQUEST_FFT_TERM,
+        REQUEST_FFT_INIT,
+        REQUEST_FFT_SCAN
+    }
 }
diff --git a/skyscraper8/Skyscraper/IO/TunerInterface/NullTunerFactory.cs b/skyscraper8/Skyscraper/IO/TunerInterface/NullTunerFactory.cs
index c244cc4..e88a579 100644
--- a/skyscraper8/Skyscraper/IO/TunerInterface/NullTunerFactory.cs
+++ b/skyscraper8/Skyscraper/IO/TunerInterface/NullTunerFactory.cs
@@ -157,8 +157,7 @@ namespace skyscraper5.Skyscraper.IO.TunerInterface
             throw new NotImplementedException();
         }
 
-        public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, IntPtr pTab,
-            IntPtr pBegin, IntPtr pNum)
+        public bool FFTScan(int freq, int pol, int lof1, int lof2, int lofsw, uint range, byte mode, byte nb_acc, uint[] pTab, ref uint pBegin, ref uint pNum)
         {
             throw new NotImplementedException();
         }
diff --git a/skyscraper8/Skyscraper/Scraper/Storage/Filesystem/FilesystemStorage.cs b/skyscraper8/Skyscraper/Scraper/Storage/Filesystem/FilesystemStorage.cs
index 50dafb0..7b8c393 100644
--- a/skyscraper8/Skyscraper/Scraper/Storage/Filesystem/FilesystemStorage.cs
+++ b/skyscraper8/Skyscraper/Scraper/Storage/Filesystem/FilesystemStorage.cs
@@ -1396,7 +1396,12 @@ namespace skyscraper5.Skyscraper.Scraper.Storage.Filesystem
 
 		public void DeleteRfSpectrum(Guid selectedGuid)
 		{
-			throw new NotImplementedException();
+            string filename = Path.Combine(rootDirectory.FullName, "rf", selectedGuid.ToString() + ".rf");
+            FileInfo fi = new FileInfo(filename);
+            if (fi.Exists)
+            {
+                fi.Delete();
+            }
 		}
 
 		public bool OtvSsuTestFile(int? currentNetworkId, int? currentTransportStreamId, int sourcePid, ushort tableIdExtension,