MBC Grand Broadcasting has swapped frequencies at two of its Grand Junction, CO stations. Variety Hits "92.3 The Vault" KKVT and Country "100.7 The Moose" KMOS-FM exchanged dial positions at 12pm Thursday. The move places the Country format on the stronger signal as 92.3 operates with 100kW at 420 meters and 100.7 only 30kW at