E07a is a variant of E07 that adds a 5-digit group to the transmission intro. It affects only the traffic format, while the null format is unchanged. It was retired from regular activity when its two known schedules both went inactive together at the end of January 2022.

It is not known how multiple messages are handled in this variant.

E07a has its own dedicated schedules that operate in the same manner as E07. However, unlike in standard E07 schedules, the repeat transmissions later the same week use different time slots, frequencies, and 3-digit IDs.