>Does anyone know what the approximate input inpedance of (4) 833a's in >parallel would be? I am in the process of converting an old Broadcast rig to >75 meters and need to build an input circuit. >Thanks! For SSB? cheers, Jim - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end