Answer Happy

You are working for the Department of Defense aboard a high-altitude reconnaissance aircraft. The receiver on your aircraft is sampling at a rate of 100GS/s (100,000,000,000 samples per second)*. What is the highest frequency that your system can accurately sample without incurring aliasing? Due to international espionage, enemy combatants have obtained the specifications of your receiver. To avoid interception of their signal, they have adjusted their transmitting frequencies to 131GHz, 164GHz and 235GHz. You tell your mission operator that you may still be able to detect their transmission. What frequencies do you look for? * Numbers presented do not represent actual military specifications.