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In practice, if the set is up to working temperature and is known to be aligned very closely to
correct frequency at a spot frequency, then the trimmers can be aligned by ear for correct
sounding audio on SSB using either a known SSB transmission of the side band or a known AM
signal. This will only work if the set is close to actual frequency. If it is not, it will either be
impossible to adjust the trimmers far enough or the resultant audio tone when switching between
side bands will be markedly different (even just on background noise).
All of this is of course far easier if a frequency counter (and signal generator) are available.
Re-fitting case parts is the reverse of the above.
AR8600 MK1
The procedure is the same as above for the mark 1 sets with the following differences;
The LSB resonator is now labelled as X104 and the USB one as X103.
The LSB resonator frequency is aligned by VC104 and USB by VC105.
The output frequency can be measured at TP105.
Viewed from the front of the set, the resonator location is on the right hand side of the set about
half way back.
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