[Hallicrafters] sx101a

[wf2u at ws19ops.com]

What you're not seeing is probably the shorted or miswired switch  
which should turn the calibrator on or off...

73, Meir WF2U

Quoting Jack Schrader <w1jhs at verizon.net>:

> As I've said in a previous note I've gotten my 101a working but   
> still I have the 100kc tone that is present all the time at 100kc   
> intervals. Whether the switch is on or off. The only way ro get rid   
> of the tone is to pull the tone module itself. Tried another module   
> with the same result.
>
>  What 'am I not seeing?
>
> 73
>
> Jack