Elecraft K2ATOBKIT - Manual (Page 4)

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Filter and BFO Settings (C A L F I L , Table 5)
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: Before recording filter/BFO data, switch to any of the lower bands
(160-17 m) so LSB/USB settings won't be swapped in CAL FIL. Connect the internal frequency counter cable to TP2
(BFO). To access filter and BFO settings, tap M E N U , scroll to C A L , hold
E D I T to access the parameter, and
change it to F I L . Hold E D I T again to activate the C A L F I L function. Record filter bandwidth settings (e.g. 0 . 7 0 )
for each mode and each filter. Cycle through the modes by tapping M O D E and holding C W R E V when appropriate;
filters are selected using X F I L . (RTTY mode, r , and RTTY reverse are only available with revision 2.00 and up
firmware. The associated secondary menu entry, R T T Y , must be set to O N .) After all filter bandwidths are recorded,
tap B A N D - followed by D I S P L A Y to show the BFO frequency. Record the BFO frequencies (e.g., 4 9 1 3 . 1 0 ) for
each mode and filter, as you did for the filter bandwidths.
Table 5. Present Filter and BFO Settings (C A L F I L )
Mode F L 1 B F 1 t F L 2 B F 2 F L 3 B F 3 F L 4 B F 4
CW
CW Rev.
LSB
USB
RTTY
RTTY Rev.
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If you're not familiar with filter and BFO configuration, review the instructions for CAL FIL in the K2 Owner's manual, starting
on page 85.