RF Link 4800bps Receiver. Broken from the supplier?

Wireless & IoT
1

I now have 6 of the RF Link 4800bps Receiver. I have 3 at each range, 315Mhz and 434Mhz. I can not get any of them to work. I also have a old RF Link 2400bps Receiver that works fine.

I can put in the 2400bps receiver and everything works. I put in the 4800bpd receiver(All 6) and I get nothing. Not even static. Any one else having the same issue?

Am I being dumb with the code?

The 2400 and the 4800 are pin for pin compatible, aren’t they?

Did I blow them our in the 4in from the static bag to the bread board?

Here is my setup/code.

I have two Arduino’s. One playing TX and one playing RX.

The RX code

int incomingByte = 0;	// for incoming serial data

void setup() {
	Serial.begin(4800);	// opens serial port, sets data rate to 4800 bps
}

void loop() {

	// send data only when you receive data:
	if (Serial.available() > 0) {
		// read the incoming byte:
		incomingByte = Serial.read();

		// say what you got:
		Serial.print("I received: ");
		Serial.println(incomingByte, BYTE);
	}
}

The TX code

void setup()                    // run once, when the sketch starts
{
  Serial.begin(4800);           // set up Serial library at 9600 bps 
}

void loop()                       // run over and over again
{
  Serial.println("Hello world!");  // prints hello with ending line break 
  delay(50);  //spam the AIR!
}