NSArray *array = [[tunerButtonHostInfo objectForKey:@"local"] objectForKey:@"snPacket"];
NSMutableData *asciiData = [[NSMutableData alloc] init];
[asciiData appendData [@"x00x00x02x00x00x0e"dataUsingEncoding:NSASCIIStringEncoding]];
if(array != nil && ![array isKindOfClass:[NSNull class]] && [array isKindOfClass:[NSArray class]]) {
    for(NSNumber *asciiCode in array) {
        int asc = [asciiCode intValue];
        if(asc == 0) {
            NSString *string = @"x00"; dataUsingEncoding:NSASCIIStringEncoding]];
        }
        else {
            NSString *converted = [NSString stringWithFormat:@"%c", asc];
            [asciiData appendData:[converted dataUsingEncoding:NSUTF8StringEncoding]];
        }
    }

    NSLog(@"stringAsciiData");  //print asciiData
    NSLog(@"%@", asciiData);

{
    NSArray *array = @[@68,@0x08,@0x08,@68,@00,@64,@0x6c,@0x0b,@03,@67,@63,@0x08,@0xc2,@0xb0,@16];
    NSMutableData *asciiData = [[NSMutableData alloc] init];
    [asciiData appendData:[@"x00x00x02x00x00x0e"dataUsingEncoding:NSASCIIStringEncoding]];
    if(array != nil && ![array isKindOfClass:[NSNull class]] && [array isKindOfClass:[NSArray class]]) {
        for(NSNumber *asciiCode in array) {
            Byte asc = [asciiCode intValue];
            if(asc == 0) {
                NSString *string = @"x00";
                [asciiData appendData:[string dataUsingEncoding:NSASCIIStringEncoding]];
            }else if(asc != 0xc2) {
                [asciiData appendBytes:&asc length:1];
            }
        }
        NSLog(@"stringAsciiData");  //print asciiData
        NSLog(@"%@", asciiData);
    }
}