Fly FM tuning frequency in Kota Bharu, Kelantan is 107.4MHz. It was launched in 2008 as the final destination of the radio frequency coverage expansion. The transmitter site of Fly FM 107.4MHz is located in Peringat, Kelantan where the tower is owned by Media Prima. The Peringat tower also operates Molek FM 105.1MHz and Hot FM 88.6MHz.
As I know, Fly FM 107.4MHz operates low power transmission in Kota Bharu, Kelantan (as much as 0.25kW).
The coverage of Fly FM 107.4MHz is not really good in Kota Bharu area because it is having interference with a Thailand radio station which the frequency is on FM 107.5MHz. From what I know, the Thailand radio station FM 107.5MHz which interferes Fly FM 107.4MHz coverage in Kelantan is based in Lochut, Waeng District, Narathiwat Province, Thailand. FM 107.5MHz does carry Sungai Padi based radio station, named as Padi Radio.
The interference between Fly FM 107.4MHz and Thailand radio station FM 107.5MHz usually happens in Kota Bharu, Rantau Panjang and Pasir Mas, causing Fly FM's listeners to tune poor signal radio station on FM 107.4MHz in those areas.
Fly FM 107.4MHz transmission is completely unavailable when tune in Rantau Panjang and Ayer Lanas, Kelantan.
In my opinion, Media Prima Audio (MPA) can solve this issue in order to encounter the interference from Thailand radio station in Kelantan without changing the frequency and transmitter site. I would suggest Fly FM to increase its Kota Bharu transmitter power from 0.25kW to 0.5kW, but without changing the antenna system. In addition, alongside increase the transmitter power to 0.5kW, Fly FM can do minor change on antenna beaming direction. This could reduce interference to Thailand radio station coverage in Thailand after increasing the transmission power.
Suggestion of increasing Fly FM 107.4MHz transmission power to 0.5kW can reach more coverage areas in Kelantan, and interference from Thailand radio station FM 107.5MHz can be reduced. Besides that, listeners can tune to Fly FM even clearer in Kota Bharu.
Increasing the transmission power to 0.5kW for Fly FM 107.4MHz does not interfere coverage of Kelantan FM 107.1MHz Bukit Bintang transmitter in Pasir Puteh, because it is very sufficient to have 300kHz frequency separation between 107.1 and 107.4. Next, it does not interfere Kelantan FM 107.2MHz coverage in Dabong because Dabong is a very remote area in Kuala Krai district where the location cannot receive any Kota Bharu based radio station.
Meanwhile I have no idea about how much the transmission output power for Hot FM 88.6MHz is, but I may think it is also 0.25kW like Fly FM 107.4MHz. That's why it is also easily interfere by Thailand radio station Khon Tak Bai Radio FM 88.75MHz which is based in Tak Bai District of Narathiwat Province.
Hot FM 88.6MHz can increase transmission power to 0.5kW to reduce interference from Thailand radio station too, however interference in Tumpat may not be solved because Tumpat is very closed to Tak Bai, unless Hot FM is changing to a new frequency.
I don't suggest to increase transmission power to 1kW for Fly FM 107.4MHz and Hot FM 88.6MHz in order to prevent interfering Thailand radio station. Therefore, 0.5kW power is very sufficient.
==My proposal of Fly FM 107.4MHz & Hot FM 88.6MHz transmission parameter==
* Transmitter power: 0.5kW
* Antenna beaming angle: 195 DEG
Proposed antenna pattern is shown below (antenna drawing is based on SIRA FM-04 dipole antenna):
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