[Boatanchors] Johnson Ranger vfo calibration

[Gary Franklin]

Anyone have a good calibration procedure to calibrate a Ranger VFO.  
Concerned particuly about getting the spread correct on the 160/80 meter 
band. Not knowing if anyone played with the pointer knob ... I need a 
procedure to start from scratch.  I have been using my SDR receiver to 
set the vfo frequency ... fairly easy for 40,20,15.10 but can't get the 
spread and tracking accuracy for 160/80.

Gary,  K8BKB