Can you confirm that the frequency crystal in the module of the transmitter is the correct crystal for that module/transmitter setup?
If it is correct then the transmitter should be working with the receiver. Do you know that this transmitter even works properly? Do you have the KO receiver to test the transmitter with? There could be a problem with the transmitter not putting out anf RF in which case you need to sent the radio to KO to have them check it out.