The Trimble TDL 450 series is an advanced, high speed, wireless UHF data   radio built to endure the stresses of daily use in harsh conditions.   Full metal construction provides impact and weather resistance that will  keep you working with complete confidence. The full-function user   interface streamlines field configuration and troubleshooting so you can  maintain maximum productivity. Adapt as conditions require: for longer  baselines you can dial up the power, and when the work area is smaller, a  lower-power output extends battery life. The Trimble TDL 450 series  even provides access to diagnostic data in the field. So, you can solve  signal strength challenges and make adjustments to stay more productive.