The HT-44/SX-117 rig that I'm buying has an HA-10 and has crystals starting at 500 Khz. Was the purpose of it to allow coverage of the AM broadcast band on the SX-117? Will the SX-117 go any lower than 500 Khz? Hmmm, now that I think about it, its probably to allow coverage of 160 meters. 73, Scott WA9WFA