Does anyone know of any workarounds/mods for getting the BC890XLT to switch to 'AM' when I program in a frequency between 138-148mhz? Even if it's a permanent mod that restricts using FM elsewhere. I like the fact I can use this scanner for 225-400 AM air mil but wish I could do something about the VHF range. I use a BCT15 in the shack which is great but would like to utilize the old BC890XLT (have two actually) for other locations. Any tips??