mcHF TCXO error: MCP9801 not present

Since December 2018 the MCP9801 chip is an option in the mcHF. However, the printed circuit is still routed, only missing the component MCP9801 that is not mounted in factory.

If you want to avoid the delay at startup with the M0NKA software or the "SENSOR!" error message on the display with the USHDR Software, soldering the MCP9801 chip is easy








The TCXO field value show an abnormally high temperature because MCP9801 has just been soldered to the printed circuit and remains hot.

The MCP9801-M chip in SOP-8 format can be purchased for € 0.72 on Aliexpress.

https://www.aliexpress.com/item/32831010653.html?

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