On Thu, 19 Feb 2009 10:45:37 -0500, David & Chris Drake wrote: >I've gone over the S-meter setup 3 times, and same result. An S-9 signal is >30 over, calibrate is about the same, 30 over. I've tried a separate signal >generator at 50mv and its 30+ over (elecraft oscillator). Same 50mv signal >gen used to check TR4C and its S-8, and TTec Omni VI is same.
I really hope you mean 50 uV, rather than 50 mV. The holy grail seems to be 50 uV for S-9 these days, although I have seen some radios over the years that were spec'd at 100 uV. The results I ended up with seemed to be a combination of circuit changes to the 2nd IF/Audio board and the adjustment method used. I've got my notes partly cleaned up, I'll see if I can finish it up this evening and get it up on the web. I got closer to 50 uV for S-9 than I could when I started... 73 -Jim -- Ham Radio NU0C TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://radiojim.exofire.net http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
