There is a new Wio firmware available. 1215-01. When on the Signals / Gain adjustment display, the AUTO gain setting for the VGA works differently starting with this version. The ideal fixed gain value for the VGA will be displayed next to AUTO (as in the previous versions). When saving the gains with the-top middle button, the VGA will be set to a fixed gain with this ideal value (for the currently received signal). In most situations, I would recommend trying the following procedure for each control channel. Set the LNA=12, Mixer=10, VGA to AUTO. Save the gains with the top-middle button. The VGA value will switch from AUTO to the new fixed gain value. Doing this for each SITE should result in a consistent signal level to the ADC during scanning. This is working excellent here. Please post results if you try it out.