[Elecraft] KX3 use for broadcast reception

[Mark, KE6BB via Elecraft]

Robert,
I found that in SOME (but not all) cases,  enabling the mode noted below helps:
MCU 1.84 / DSP 1.28, 1-4-2014
 
* AM BROADCAST BAND (BCB) RECEIVE OPTIMIZATION:  If you have a KXAT3 ATU installed, you can select one of two optimizations for reception below 1300 kHz. While in the ATU MD menu entry, tap '1' (PRE) to select either BCB NOR (the original setting, which reduces the amplitude of received harmonic images), or BCB=160 (a new setting that may improve receive sensitivity by using the 160 meter ATU settings even below 1300 kHz). BCB NOR is recommended unless you need BCB=160 in order to copy a weak AM station. You can also improve sensitivity by using higher preamp gain settings (use the PREAMP menu entry, which is per-band
MarkKE6BB