All, I have, I believe (hope not..), a troublesome FT-857D. For some background it had the ubiquitous "corrosion in the filters" problem. It sat out of commission for about 7 years or more. I finally got around to replacing the filters before Christmas (there is another thread on that here on QRZ somewhere... it was a nightmare getting the old ones out). With that out of the way, the radio performs OK now. I have made several contacts on it. However, the S meter is goofy. It goes straight from off to S9+. I am in the service menu trying to set the S1 level in the initial RF Gain calibration (starting on 160m). I can not get the meter to read anything until it hits S9. On service menu item 1 (HF1-RXG) and a 9dBuV signal injected I get no meter response at a setting of 73 or less. At 74 the meter jumps to S9. No in between. Am I missing something? Is there any merit to going through all the prior calibrations even though the radio works fine otherwise? Frequency calibration seems right on the money... so I really don't want to go adjusting things that do not appear to be broken - unless there is something in that tuning that will affect the receiver gain control and meter reading?