code below produces
PQFC⸮"
char s [] = { 0x50, 0x51, 0x46, 0x43, 0xF3, 0x22, 0x020, 0x0 };
void
setup (void)
{
Serial.begin (9600);
Serial.println (s);
}
// -----------------------------------------------------------------------------
void
loop (void)
{
}