SmarTrunk Systems has named Lakewood, Colo.-based Shaffer Communications Marketing to sell its trunking equipment to dealers, service providers and end-users in the following areas: Eastern Montana, Utah, Colorado, Wyoming, New Mexico, Southeast Idaho and Western Texas. Stan Shaffer, principal at the firm, previously had been district manager for five years at RCA Mobile Communications, regional manager for 10 years at EFJohnson and regional manager for 11 years at Midland Radio.