Binns - thank you for the comments. Glad to know air band entry is in kHz. Works fine. 73

I upgraded from stock firmware to 4.2 AIR build date 23.03.2025 on my ATS200. I have problem with AIR (aviation) band. If I select the AIR button, I get popup window "Connect the External Frequency Counter." If I try direct frequency entry from FREQ button, I get red message "not supp...