more refactoring to help my understanding of what this code does

HackRF.py

@@ -0,0 +1,29 @@
+import numpy
+
+class HackRF:
+    """The HackRF class has functions from converting data into a format into which the hackrf can process
+    """
+    
+
+    def hackrf_raw_IQ_format(self, ppm):
+        """
+        Args:
+            ppm: this is some data in ppm (pulse position modulation) which you want to convert into raw IQ format
+            
+        Returns:
+            bytearray containig the IQ data
+        """
+
+        signal = []
+        bits = numpy.unpackbits(numpy.asarray(ppm, dtype=numpy.uint8))
+        for bit in bits:
+            if bit == 1:
+                I = 127
+                Q = 127
+            else:
+                I = 0
+                Q = 0
+            signal.append(I)
+            signal.append(Q)
+
+        return bytearray(signal)