private void BUT_Syncoptions_Click(object sender, EventArgs e)
{
RAIR_SPEED.Text = AIR_SPEED.Text;
RNETID.Text = NETID.Text;
RECC.Checked = ECC.Checked;
RMAVLINK.Text = MAVLINK.Text;
RMIN_FREQ.Text = MIN_FREQ.Text;
RMAX_FREQ.Text = MAX_FREQ.Text;
RNUM_CHANNELS.Text = NUM_CHANNELS.Text;
RMAX_WINDOW.Text = MAX_WINDOW.Text;
RENCRYPTION_LEVEL.Checked = ENCRYPTION_LEVEL.Checked;
txt_Raeskey.Text = txt_aeskey.Text;
}