Radio Republik Indonesia RRI Nunukan PRO-1 changed frequency from FM 97.1MHz to FM 96.3MHz in order to avoid co-channel interference with RTM Traxx FM Tawau frequency 97.1MHz (Tx: Gunung Andrassy)

In the past years, Radio Republik Indonesia RRI Nunukan PRO-1 had co-channel interference with RTM Traxx FM Tawau frequency (TX: Gunung Andrassy) because both are using same frequency on FM 97.1MHz.

However, recently I only realize that RRI Nunukan PRO-1 operates on new frequency 96.3MHz, so I believe RRI Nunukan PRO-1 has already changed the frequency from FM 97.1MHz to FM 96.3MHz within the year of 2024.

The recent frequency migration of RRI Nunukan PRO-1 from FM 97.1MHz to FM 96.3MHz was to avoid co-channel interference with RTM Traxx FM 97.1MHz Gunung Andrassy transmitter coverage in Nunukan, North Kalimantan Province, Indonesia.

When RRI Nunukan PRO-1 uses FM 96.3MHz, it can have better radio coverage to the area, but none of Tawau or neighboring radio stations are allowed to use 96.3MHz or adjacent frequencies (96.0/96.1/96.2/96.4/96.5/96.6).

Minimum FM radio frequency separation between Nunukan and Tawau (Gunung Andrassy) is 400kHz.

Apart of Nunukan, Radio Republik Indonesia RRI Nunukan PRO-1 FM 96.3MHz can be tuned clearly in Tawau and Semporna, Sabah, Malaysia since 2024.