Hello to the Group, I have a virgin AM-6155 amplifier from a SK. This is the one that will work on 222 or 432. It is S/N 5897 and tuned to 350.3 Mhz. I will have it at the St. Charles Hamfest on 25 August 2013, near St. Louis, MO. The price is $ 375.00 73, Dave - KB0PE