/**
* Gets the number of bytes we should read before the RadioReceive.header
* event is fired. If the length of the packet is less than this amount,
* then that event is fired earlier. The header length must be at least one.
*/
/**
* Gets the number of bytes we should read before the RadioReceive.header
* event is fired. If the length of the packet is less than this amount,
* then that event is fired earlier. The header length must be at least one.
*/