I am trying to put my TR-4C back on the air after many years on the shelf. I
have a few problems and questions for now. Maybe more later.
1. The bias adjustment procedure as listed in the manual does not work. The
bias current reads close to zero and does not change with adjustment of the
bias knob. This is true of two different power supplies that I have. Is the
manual correct and what am I doing wrong?
2. The USB and LSB indicator lights are very dim and difficult to see in normal
lighting. The bulbs seem to be bright enough but the red plastic lenses are
eating up the light. Any fix for this?
3. The crystal calibrator works very nicely when adjusted to zero beat on the
calibrated frequency. However, if I move away from the calibration point, the
calibrator still has a steady signal at about 500 to 700 Hz (estimate only, my
ears are shot). The signal goes away when I turn off the calibrator. Is this
normal?
Thanks.
Richard
kc9ub
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