Hello K2 receiver wizards, what makes more sense when using the XG1 to set the S-meter on a K2, pre-amp on or off? As you well know, pre-amp makes a big difference on 40mtr......I suppose most K2 owners turn pre-amp on from 20mtrs and up, while turning it off 160-40 for better selectivity. Many thanks for your advice and opinions. 73 ed