microHAM ARCO
firmware v2.0.A
microHAM · Released Dec 20, 2021 · First seen Sep 9, 2026
Source:
microham.com
v2.0.A is not the latest firmware for the microHAM ARCO: the current version is v4.2.B (January 3, 2025). Go to v4.2.B
In short — summary by updatemystuff.com
Adds adjustable 3dB beamwidth per antenna, improves mains hum suppression, and reorganizes menus.
- Per-antenna 3dB beamwidth control
- Enhanced mains hum suppression
- Separate antenna setup menu
Written from microHAM's release notes, which are printed in full below.
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What's in this update
- 3dB beamwidth added, adjustable per antenna
- antennas setup in separate submenu (Heading-Antennas)
- time is displayed in screensaver
- improved mains hum suppression for Pot/Multiturn Pot
- in Heading-Calibration menu, Sensor Position indicates unadjusted position for resistive sensors
- adjustable minimum backlight in System menu
- MAC address displayed in LAN menu
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