hi, Yes, the mc-50 can be used on the ts-570, first you need to set the mc-50 for low z and then use the Kenwood MJ-48 adapter. the mj-48 are hard to find, you can make up your own adapter or this guy on ebay sells non kenwood adapters. http://members.ebay.com/ws/eBayISAPI.dll?ViewUserPage&userid=lymansradio 73 james ke4drn