private void TransmitFlag(KeyValuePair <string, string> kvp)
        {
            string ip   = kvp.Key;
            string flag = kvp.Value;

            var sw        = Stopwatch.StartNew();
            var flagBytes = Encoding.GetEncoding(1251).GetBytes(flag);

            flagBytes = BitHelper.Encode5B4B(flagBytes);
            for (int i = 0; i < 8; i++)
            {
                comPort.Write(flagBytes, 0, flagBytes.Length);
                BitHelper.RotateLeft(flagBytes);
            }
            sw.Stop();
            log.InfoFormat($"Transmitted flag {flag} for team {ip} in {sw.ElapsedMilliseconds}ms");
        }