Ahhh...Steve...just where do you think the design concepts for the '830 originated? That's right - from the "R-820". Which is what I'm running with my TS-820S, in the same manner a TenTec owner can slave an RX-340 to a Pegasus. Comparing specs between the two, the '830's receiver is better in some areas; worse in others. Any one of the three I have will definitely hear a signal weaker than the 0.35uV spec published by Sherwood. No, the TS-820S is not the equal of an '830. But a set of "twins" most assuredly is.