[AMRadio] Comment and a question

[Robert Nickels]

On 6/11/2018 9:31 AM, CL in NC via AMRadio wrote:
>   The front panel slide rule dial has 80-10 meters with a little overage past the band edges, but no BC band

Hi Charlie,

Just to be clear, like  the SX-110 I used as a Novice over 50 years 
ago,  the main tuning dial is set to the position indicated by a dot for 
each of the ham bands which can then be tuned more easily using the 
slide-rule bandspread dial (the SX-99's rotary dials worked the same 
way).    Of course the accuracy of the slide rule dial depended on the 
calibration of the receiver and how closely one could set the correct 
reference position - a crystal calibrator made this an easy process but 
since these were lower priced receivers, Hallicrafters did not include 
one.    Those of us who didn't have an outboard one got adept at setting 
the bandspread dial using known reference signals - like the old 
buzzards who always sat on the same frequency ;-)

The bandspread tuning is active on all frequencies but there is no 
calibration, just the 0-100 Logging Scale.  Again, if you had a crystal 
calibrator to set the main tuning at a known point the logging scale 
made it possible to return to a given SW or BC band frequency with some 
degree of repeatability.

73, Bob W9RAN