TS2000 Satellite mode and Gpredict

Hi,
Gpredict issues set_vfo commands on sat track engage to switch a/b vfo
and set downlink/uplink frequency.

Although this generally works, Kenwood TS2000 has its own style during
satellite operation:
1) vfo B is *always* for uplink
2) vfo A is *always* for downlink
so vfo selection (FR command) doesn't work: kenwood firmware doesn't
recognize it in Satellite mode.

When Gpredict is trying to set_vfo on TS2000 in Satellite mode it loops
on unrecognized FR command and freezes.

Attached patch checks for TS2000 Satellite mode status and if ON
"disables" set_vfo command.
This allows Gpredict to track downlink/uplink frequency on TS2000 (you
need to configure manually downlink/uplink band on the rig before
engaging)

Please be aware this isn't a "Gpredict patch": it fixes set_vfo behavior
in satellite mode according to ts2000 firmware.

73, Ciao

Dario Ventura, IZ7CRX

kenwood/kenwood.c

@@ -727,6 +727,25 @@ int kenwood_set_vfo(RIG *rig, vfo_t vfo)
     return -RIG_EINVAL;
   }
 
+  //if rig=ts2000 then check Satellite mode status
+  if(rig->caps->rig_model == RIG_MODEL_TS2000) {
+	  char retbuf[20];
+	  rig_debug(RIG_DEBUG_VERBOSE, "Checking Satellite mode status\n");
+	  sprintf(cmdbuf, "SA");
+
+	  retval = kenwood_transaction(rig, cmdbuf, retbuf, 20);
+	  if (retval != RIG_OK)
+	    return retval;
+
+	  rig_debug(RIG_DEBUG_VERBOSE, "Satellite mode status %s\n",retbuf);
+	  //Satellite mode ON
+	  if(retbuf[2]=='1') {
+		  //SAT mode doesn't allow FR command (cannot select VFO)
+		  //selecting VFO is useless in SAT MODE
+		  return RIG_OK;
+		  }
+	  }
+
   sprintf(cmdbuf, "FR%c", vfo_function);
 
   if (rig->caps->rig_model == RIG_MODEL_TS50