Elecraft KX3
firmware v1.84
Elecraft · Released Jan 4, 2014 · First seen Sep 14, 2026
Source:
elecraft.com
v1.84 is not the latest firmware for the Elecraft KX3: the current version is v3.02 (April 8, 2022). Go to v3.02
In short — summary by updatemystuff.com
New AM broadcast band receive optimization option for improved sensitivity with KXAT3 ATU installed.
- New BCB=160 mode may improve weak AM station reception below 1300 kHz
- BCB NOR (original) recommended, reduces harmonic images
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
MCU 1.84 / DSP 1.28
- 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).
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