Saving off what I've created. It doesn't work well, yet.

gqrx-panadapter.py

@@ -23,6 +23,21 @@ import argparse
 import socket
 import time
 
+DEBUG=True
+
+usb_if_offset = -2700
+lsb_if_offset = 2730
+
+def calc_lnb_lo(freq, if_freq, is_usb=True):
+    if is_usb:
+        if DEBUG:
+            print('USB IF: ' + str(if_freq + usb_if_offset))
+        return freq - (if_freq - usb_if_offset)
+    else:
+        if DEBUG:
+            print('LSB IF: ' + str(if_freq + lsb_if_offset))
+        return freq - (if_freq - lsb_if_offset)
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('-ga', '--gqrx-address', type=str, default='localhost',
@@ -55,16 +70,51 @@ def main():
         return 1
 
     try:
+        iffreq = int(args.ifreq * 1e6)
+        old_rigfreq = 0
+        old_lnbfreq = 0
+        old_gqrxfreq = 0
+
         while True:
+            if DEBUG:
+               print('--------------------')
+            rs.send(b'm\n')
+            is_usb = True if rs.recv(1024).splitlines()[0] == "USB" else False
             rs.send(b'f\n')
-
             rigfreq = int(rs.recv(1024))
-            lnbfreq = rigfreq - int(args.ifreq * 1e6)
+            lnbfreq = calc_lnb_lo(rigfreq, iffreq, is_usb)
 
-            gs.send('LNB_LO {}'.format(lnbfreq).encode())
-            gs.recv(1024)
+            if lnbfreq != old_lnbfreq:
+                if DEBUG:
+                    print('LNB Freq: {}'.format(lnbfreq).encode())
+                gs.send('LNB_LO {}'.format(lnbfreq).encode())
+                gs.recv(1024)
+                old_lnbfreq = lnbfreq
 
-            time.sleep(args.interval / 1000.0)
+            if rigfreq != old_rigfreq:
+                if DEBUG:
+                    print('Rig Freq: {}'.format(rigfreq).encode())
+                gs.send('F {}'.format(rigfreq).encode())
+                gs.recv(1024)
+                old_rigfreq = rigfreq
+                old_gqrxfreq = rigfreq
+
+#            gs.send(b'f\n')
+#            gqrxfreq = int(gs.recv(1024))
+#            if DEBUG:
+#                print('Gqrx freq: {}'.format(gqrxfreq).encode())
+#            if gqrxfreq != old_gqrxfreq:
+#                rs.send(b'F ' + str(gqrxfreq) + '\n')
+#                rs.recv(1024)
+#                old_gqrxfreq = gqrxfreq
+#                old_rigfreq = gqrxfreq
+#
+#                lnbfreq = calc_lnb_lo(rigfreq, iffreq), is_usb)
+#                gs.send('LNB_LO {}'.format(lnbfreq).encode())
+#                gs.recv(1024)
+#                old_lnb_freq = lnbfreq
+
+            time.sleep(args.interval / 100.0)
     except KeyboardInterrupt:
         pass
     except Exception as e: