SACRAMENTO - RELM Wireless announced that the California Department of Forestry extended its contract with Silverado Avionics, an authorized RELM BK Radio dealer, for purchases of radio products through June 30, 2008. The CDF's original contract with Silverado had an estimated value of $5.4 million with a three-year term expiring on June 30, 2007, according to RELM. Under the contract, Silverado will provide BK Radio-brand, portable two-way transceivers to for deployment in forests throughout the state.