With locals:
(AT120 w/o local - 37.99) + (local - 5.99) = 43.98
(TC - 41.99) = 41.99
However, if I can get locals using an antenna, or D* does not provide locals to my area:
(TC - 41.99) - (local - 3.00) = 38.99 :shocked
(AT120 w/o local - 37.99) = 37.99
(AT120 w/o local - 37.99) + (local - 5.99) = 43.98
(TC - 41.99) = 41.99
However, if I can get locals using an antenna, or D* does not provide locals to my area:
(TC - 41.99) - (local - 3.00) = 38.99 :shocked
(AT120 w/o local - 37.99) = 37.99