If the MAX2871 is selecting the wrong VCO band, check if the VAS_TEMP or VCO auto select temperature compensation feature is enabled.
Enabling VAS_TEMP / VCO auto select temperature will fix the issue.
If the MAX2871 is selecting the wrong VCO band, check if the VAS_TEMP or VCO auto select temperature compensation feature is enabled.
Enabling VAS_TEMP / VCO auto select temperature will fix the issue.