[Elecraft] KX3 Calibrating KXFL3 Roofing Filter

Steven Davidson k3fzt at sjdmd.com
Mon Jun 2 19:41:15 EDT 2025


The radio is new to me from an SK estate. FW was at 2.12 I've updated to
most current MCU and DSP.

Page 8 of the instructions calls for setting "RX Shift" which does not
appear on the menu even after the FW upgrade to 3.02/1.52. Similarly "SMTR
MD" does not appear in the menu.

Page 10 calls for setting the "RXSBNUL" which does not appear in the menu.

The radio is serial number 6631 so judging from that and the firmware it
came with it's from about 2014.

How do I calibrate and use the roofing filters?

73 de K3FZT / Steve
--
Steve Davidson K3FZT
Winlink Gateway K3FZT-10 at 145.67mHz direct or via W3EOC-3
WIRES-X Room #85218 "MARC-DARBY" 444.050 mHz
K3FZT at sjdmd.com FN20ja


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