changing default power levels of all examples

examples/AFSK-PacketTester/AFSK-PacketTester.ino

@@ -44,7 +44,7 @@ void setup() {
   
   radio.initialize();
   radio.frequency(144390);
-  radio.setRfPower(8);
+  radio.setRfPower(0);
   dds.start();
   radio.afsk.start(&dds);
   delay(100);

examples/AFSK-SerialMessenger/AFSK-SerialMessenger.ino

@@ -40,7 +40,7 @@ void setup() {
   Wire.begin();
   radio.initialize();
   radio.frequency(145570);
-  radio.setRfPower(15);
+  radio.setRfPower(0);
   dds.start();
   radio.afsk.start(&dds);
   delay(100);

examples/FMBeacon/FMBeacon.ino

@@ -45,7 +45,7 @@ void setup() {
   
   // Tell the HamShield to start up
   radio.initialize();
-  radio.setRfPower(8);
+  radio.setRfPower(0);
   // Configure the HamShield to transmit and recieve on 446.000MHz
   radio.frequency(145570);
   

examples/JustTransmit/JustTransmit.ino

@@ -29,7 +29,7 @@ void setup() {
   Serial.println(result,DEC);
   Serial.println("Setting radio to its defaults..");
   radio.initialize();
-  radio.setRfPower(15);
+  radio.setRfPower(0);
   radio.setChanMode(3);
 }
 

examples/SerialTransceiver/SerialTransceiver.ino

@@ -97,7 +97,7 @@ void setup() {
   radio.setVolume2(0xF);
   radio.setModeReceive();
   radio.setTxSourceMic();
-  radio.setRfPower(9);
+  radio.setRfPower(0);
   radio.setSQLoThresh(80);
   radio.setSQOn();
 }