Ron search for Tram manual, I will get the sequence wrong but here goes, set crystal/manual switch to manual..set both tuning dials to channel 12, pull calibration button out.rotate manual tuning knob until zero beat is heard. Zero beat is obtained by turning knob above channel 12 and slowly turning back towards center a loud beat note should be heard, decreasing in pitch as channel 12 is approached. Continue rotating in the same direction and a beat note increasing in pitch can be heard, zero beat is when you can't hear the two beats anymore, it is calibrated when there is no beat close to channel 12. I went back and forth a couple of times and it worked on mine, if you crystal function is aligned right.