On 5th and 6th October 2016, Kool FM already reach Kota Bharu on FM 88.6MHz in Peringat, then Alor Setar on FM 107.3MHz in Alor Setar Tower after they launched 3rd transmitter in Bukit Besar for Kuala Terengganu on FM 93.6MHz on 13th July 2016.
For next, Kool FM will go to Perak (Ipoh and Taiping), N. Sembilan, Melaka, Johor, Kuantan and East Malaysia.
It becomes a topic of Kool FM if they reach Johor.
Currently Johor Bahru frequency spectrum are full, there is no occupied frequency available. FM 89.3MHz and FM 96.3MHz are belonged to Singapore, meanwhile FM 107.9MHz is occupied by airport in Johor Bahru, Singapore and Indonesia. So, FM 107.9MHz currently cannot be used for broadcasting in Gunung Pulai as it can cause serious flight incident. In my opinion, Kool FM may use Gunung Ledang to cover whole Johor areas including Johor Bahru, but frequencies are limited.
Empty frequencies of Gunung Ledang: FM 87.5MHz, FM 91.5MHz, FM 100.8MHz, FM 100.9MHz, FM 103.9MHz
Above these frequencies, only FM 87.5MHz and FM 100.8MHz are suitable for Kool FM.
MCMC currently never allocate FM 87.5MHz for broadcasting station yet.
Kool FM is possible to use FM 100.8MHz in Gunung Ledang for Melaka and Johor. On May 2016, I had proposed FM 100.9MHz for Kool FM Gunung Ledang, but at last I don't think Kool FM will use FM 100.9MHz, instead possibly FM 100.8MHz as Johor Bahru cannot receive Kool FM from Gunung Ledang and it is interfered heavily by Minnal FM 101.1MHz from Gunung Pulai.
If Kool FM Gunung Ledang frequency for Melaka and Johor is assigned on FM 100.8MHz, there may have problem too. Because MY FM 100.6MHz Gunung Telapak Burok already has 200kHz separation with Ai FM 100.4MHz Gunung Ledang, so the spectrum of My FM 100.6MHz may be stiffer when Kool FM use FM 100.8MHz in Gunung Ledang.
In this situation, I think it should be ok if Kool FM Gunung Ledang transmitter use directional antenna, only direct to south (Johor) like Johor FM 105.3MHz. Gunung Ledang can transmit to Negeri Sembilan areas like Rembau, Tampin, Gemas, Jempol, Gemencheh, Port Dickson, Linggi, Johol, Batu Kikir and Simpang Pertang. For this issue, to avoid interference to My FM 100.6MHz in Negeri Sembilan, Kool FM 100.8MHz Gunung Ledang is not allowed to direct covering Negeri Sembilan, only Johor and part of Melaka can be covered.
Tampin Negeri Sembilan normally receive radio from Gunung Ledang as there is no signal if use Gunung Telapak Burok frequency. Because of Kool FM 100.8MHz Gunung Ledang use directional antenna, so reception in Tampin and Melaka will not be clear like other radio station.
For Negeri Sembilan, I propose FM 102.1MHz Gunung Telapak Burok for Kool FM. For your information, Gunung Telapak Burok radio still can received in some Melaka areas, but signal is not clear at all. The FM 102.1MHz Gunung Telapak Burok for Kool FM that I proposed has 200kHz with Melaka FM 102.3MHz Gunung Ledang which covers Melaka. The reception issue of Kool FM in Melaka may not be solved perfectly, although launching of Gunung Telapak Burok as Kool FM 102.1MHz Gunung Telapak Burok is interfered by Melaka FM 102.3MHz in Melaka.
So, what's the solution?
Between Gunung Telapak Burok and Gunung Ledang, there has another radio transmitter site where located in nearby Negeri Sembilan-Melaka border, it is called as Tampin Hill (Bukit Tampin).
Currently there is no any commercial radio stations have any transmitter in Bukit Tampin as Tampin and Melaka can receive from Gunung Ledang clearly, only RTM Negeri FM has Bukit Tampin transmitter on FM 95.7MHz (0.1kW).
If Kool FM 100.8MHz Gunung Ledang is not clear in Melaka as use directional antenna pattern to prevent interference to MY FM 100.6MHz in Negeri Sembilan, Kool FM can launch one more transmitter in Bukit Tampin for Melaka. Talk about the available frequencies in Bukit Tampin, here are them:
FM 94.5MHz, FM 95.3MHz, FM 100.0MHz, FM 101.1MHz, FM 103.0MHz, FM 104.0MHz, FM 104.9MHz, FM 105.7MHz.
Above these frequencies, only FM 101.1MHz is the most suitable ones. Meanwhile for other frequencies, I don't think they can solve reception problem of Kool FM in Melaka as they can led co-channel interference with Gunung Ulu Kali stations in Melaka.
Melaka still can receive Gunung Ulu Kali radio signal with moderate reception, even my favorite BFM 89.9 also can be received in Melaka town clearly.
Let's analyze Kool FM Melaka, Negeri Sembilan and Johor frequencies
==RF Analysis of Kool FM N.Sembilan frequency== (based on my proposal)
101.8MHz: My FM Gunung Ulu Kali
102.1MHz: Kool FM Gunung Telapak Burok
Status: 300kHz, OK
102.1MHz: Kool FM Gunung Telapak Burok
102.3MHz: Melaka FM Gunung Ledang
Status: 200kHz, OK, but may not solve reception problem in Melaka
101.9MHz: Johor FM Gunung Pulai
102.1MHz: Kool FM Gunung Telapak Burok
Status: 200kHz, OK
==RF analysis of Kool FM Johor/Melaka frequency== (main)
100.4MHz: Ai FM Gunung Ledang
100.6MHz: My FM Gunung Telapak Burok
100.8MHz: Kool FM Gunung Ledang
Result: MY FM 100.6MHz is interfered heavily in Negeri Sembilan (Port Dickson, Rembau, Bahau, Jempol, Kuala Pilah)
Remedy: Kool FM 100.8MHz use directional antenna, only allowed to transmit to south
100.6MHz: My FM Gunung Telapak Burok
100.8MHz: Kool FM Gunung Ledang (Johor only)
Result after directional antenna by Kool FM: 200kHz, OK
100.8MHz: Kool FM Gunung Ledang (Johor only)
101.1MHz: Minnal FM Gunung Pulai
Status: 300kHz, GOOD.
==RF analysis of Kool FM Melaka frequency==
100.8MHz: Kool FM Gunung Ledang (Johor only)
101.1MHz: Kool FM Bukit Tampin (Melaka only)
Status: 300kHz, OK
101.1MHz: Kool FM Bukit Tampin (Melaka only)
101.1MHz: Minnal FM Gunung Pulai
Status: 0kHz, OK. Kool FM and Minnal FM can be received on 100.8MHz and 103.3MHz from Gunung Ledang in interference areas
100.9MHz: Selangor FM Gunung Ulu Kali
101.1MHz: Kool FM Bukit Tampin
Status: 200kHz, OK
==Parameter of Kool FM Melaka frequency==
Frequency: FM 101.1MHz
Power: 1kW
Transmitting location: Bukit Tampin, Negeri Sembilan
With Bukit Tampin frequency, Kool FM can be received clearly in Melaka via Bukit Tampin, meanwhile Jasin and Asahan can receive Kool FM via Gunung Ledang on FM 100.8MHz when FM 101.1MHz Bukit Tampin becomes weak.
==Coverage for Kool FM southern region== (my proposals)
Seremban: FM 102.1MHz from Gunung Telapak Burok
Melaka: FM 101.1MHz from Bukit Tampin
Johor: FM 100.8MHz from Gunung Ledang
- FM 102.1MHz Gunung Telapak Burok covers:
1. Negeri Sembilan: Seremban, Jelebu, Kuala Pilah, Port Dickson, Johol*, Rembau*, Bahau, Jempol, Rompin, Gemas, Gemencheh*
2. Pahang: Kemayan, Keratong, Teriang, Bera
3. Selangor: Bangi, Kajang, Semenyih, Beranang, Sepang, Serdang, Balakong
*alternative frequency
- FM 100.8MHz Gunung Ledang covers:
1. Johor: Muar, Batu Pahat, Segamat, Kluang, Pontian, Kota Tinggi, Kulaijaya, Ledang and parts of Johor Bahru
2. Melaka: Asahan, Jasin
- FM 101.1MHz Bukit Tampin covers:
1. Melaka: ALL (Melaka City, Alor Gajah, Batu Berendam, Ayer Keroh, Masjid Tanah etc)
2. Negeri Sembilan: Tampin, Rembau, Johol, Gemencheh, Pulau Sebang
About usage of directional antenna for Kool FM Gunung Ledang frequency FM 100.8MHz, I believe that Kool FM 100.8MHz will not be received in Negeri Sembilan and some Melaka areas. In addition, the reception of Kool FM 100.8MHz Gunung Ledang will be interfered by My FM 100.6MHz Gunung Telapak Burok in Port Dickson, Kuala Pilah, Rembau, Jempol, Jelebu, Johol, Dangi, FELDA Kepis, Gemencheh, Kota, Linggi and Pedas, even the reception will be interfered by Selangor FM 100.9MHz too.
Selangor FM 100.9MHz still can be received in most of Negeri Sembilan areas if Kool FM 100.8MHz is launched in Gunung Ledang because Kool FM 100.8MHz is for Johor only. In addition, Port Dickson can receive Selangor FM 100.9MHz clearly without interference from Kool FM, same as Suria FM 105.3MHz still can get in Port Dickson clearly with very less interference from Johor FM.
==Kool FM southern region frequencies line-up==
- Negeri Sembilan: FM 102.1MHz
- Melaka: FM 101.1MHz
- Johor: FM 100.8MHz
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