Radio Republik Indonesia RRI Sambas PRO-1 changed its frequency from FM 97.7MHz to FM 97.4MHz since October 2024, does it prevent co-channel interference with Mix FM 97.7MHz Kuching frequency?

Since October 2024, Radio Republik Indonesia RRI Sambas PRO-1 uses new frequency on FM 97.4MHz, formerly it was on FM 97.7MHz.

The frequency change of RRI Sambas PRO-1 from FM 97.7MHz to FM 97.4MHz is to widen the coverage and provide better radio transmission to the area.

In addition, as formerly RRI Sambas PRO-1 FM 97.7MHz used same frequency with Mix FM in Kuching, Sarawak, causing co-channel interference in Serian, Sarawak, so Mix FM 97.7MHz is no longer facing co-channel interference with this Indonesia radio station since October 2024 in Serian and Bau, Sarawak after RRI Sambas PRO-1 moved to FM 97.4MHz.

Mix FM Kuching frequency 97.7MHz is transmitted from Bukit Djin, instead of Gunung Serapi.

As RRI Sambas PRO-1 radio transmission can reach several areas in Kuching, Sarawak, 97.7MHz caused co-channel interference with Mix FM, so RRI Sambas PRO-1 discontinued 97.7, and used 97.4 as the new frequency.

In Kuching, Sarawak, it may have 2 Indonesia radio stations. Previously, the listeners could access only RRI Entikong PRO-1 FM 100.7MHz weakly, but today RRI Sambas PRO-1 FM 97.4MHz may be available in Kuching too.

==RF analysis==

97.2MHz: RTM Red FM Gunung Ampungan (Serian, Sarawak)

97.4MHz: RRI Sambas PRO-1 

<200kHz, OK>

97.4MHz: RRI Sambas PRO-1

97.7MHz: Mix FM Bukit Djin (Kuching, Sarawak)

<300kHz, OK>