Can FM 102.1MHz be used in Gunung Telapak Burok?

In Negeri Sembilan and Southern Selangor, FM 102.1MHz is the only vacant frequency which can be used in Gunung Telapak Burok basically. Actually I listed FM 102.1MHz as Gunung Telapak Burok empty frequency since 2008, but until today FM 102.1MHz is not being used by any radio stations from Gunung Telapak Burok. Coincidentally, FM 102.0MHz is likely occupied in Bukit Tampin with signal, but without audio. I had highlighted this to Malaysia Communications Multimedia Commission (MCMC) about this, but MCMC told that FM 102.0MHz has no transmission in Bukit Tampin by anyone, so the regulator chose to close case. In this situation, FM 102.0MHz sounds like unlicensed using of spectrum, neither public or commercial....

Since MCMC denied FM 102.0MHz is not occupied in Bukit Tampin, I planned to do research of FM 102.1MHz Gunung Telapak Burok by rolling out antenna pattern drawing. Few surrounding radio stations nearby this frequency must be considered when I do this research.

Actually I planned to do research of FM 102.1MHz Gunung Telapak Burok for BFM to expand its coverage in Seremban, but it is difficult to make decision as Pahang FM already occupied 102.2MHz in Fraser's Hill. Configuration of BFM 102.1MHz Gunung Telapak Burok studies by using directional antenna with lower power (about 0.75kW).

==RF analysis of FM 102.1MHz== (neglect FM 102.0MHz)

101.8MHz: MY FM Gunung Ulu Kali
102.1MHz: Gunung Telapak Burok (for BFM)
<300kHz, OK>

102.1MHz: Gunung Telapak Burok (for BFM)
102.3MHz: Melaka FM Gunung Ledang
<200kHz, OK because BFM does not beam to south direction>

102.1MHz: Gunung Telapak Burok (for BFM)
102.2MHz: Pahang FM Fraser's Hill
<100kHz, critical separation>

Pahang FM 102.2MHz Fraser's Hill mainly covers Raub and Lipis of Pahang, but the transmission of Pahang FM 102.2MHz maybe still accessible and receivable in Temerloh, Lanchang, Mentakab, Karak, Bandar Bera, Kemayan, Mengkarak, Tembangau, Manchis and part of Teriang, alongside with main transmitter FM 107.5MHz Gunung Ulu Kali.

I'm not certain that Pahang FM 102.2MHz from Fraser's Hill is receivable with moderate reception in Bandar Bera, Teriang, Kemayan, Tembangau, and Mengkarak yet because I was used to travel there two years ago, but RTM Fraser's Hill radio stations were not active yet during that time. As I know, City Plus FM 106.0MHz and Lite FM 104.6MHz from Gunung Telapak Burok were still clear in Teriang, Bandar Bera, and Mengkarak, just only Kemayan town cannot receive these two Gunung Telapak Burok radio stations.

In Bera, Teriang, Mengkarak, Kemayan and Tembangau, Gunung Ledang radio stations can be received loudly and clearly (subject no co-channel or 100kHz adjacent-channel interference with Gunung Ulu Kali). Surrounding Pahang FM Gunung Ulu Kali frequency 107.5MHz, there are two radio stations from Gunung Ledang are allocated nearby Pahang FM Gunung Ulu Kali frequencies, Melody FM 107.3MHz and Negeri FM 107.7MHz, these two radio stations are loud and clear in Kemayan, Teriang, Tembangau, and Bandar Bera, then they went faded when reach Temerloh. Pahang FM listeners who tune this radio station on 107.5MHz in Teriang, Kemayan and Tembangau may receive some interference noise from Melody FM 107.3MHz and Negeri FM 107.7MHz where Pahang FM 107.5MHz becomes "burger" or "sandwich" of Melody FM 107.3 and Negeri FM 107.7. Because of this situation, the intention of RTM added Pahang FM in Fraser's Hill on 102.2MHz is not only to cover Raub and Lipis where are blind spot coverage of Gunung Ulu Kali, I guess Pahang FM 102.2MHz Fraser's Hill is also used to cover Bandar Bera, Teriang, Kemayan, Mengkarak, and Tembangau alternatively, plus Melaka FM 102.3MHz Gunung Ledang does not cover Pahang as it covers Melaka only, even 102.3MHz reception in Bera district of Pahang is weaker than Negeri FM 107.7MHz.

==Pahang FM 107.5 RF situation in Bera district of Pahang==

107.3MHz: Melody FM Gunung Ledang
107.5MHz: Pahang FM Gunung Ulu Kali
107.7MHz: Negeri FM Gunung Ledang (covers Tampin and Jempol) 
<200kHz left right, could face adjacent channel interference from Gunung Ledang radio stations when cheaper radio receiver is applied>

==RF analysis of Pahang FM Fraser's Hill vs. Gn Ledang==
102.2MHz: Pahang FM Fraser's Hill
102.3MHz: Melaka FM Gunung Ledang
<100kHz, OK>

When Pahang FM operates 102.2MHz in Fraser's Hill, Melaka FM 102.3MHz from Gunung Ledang could be completely interfered in Temerloh, Bandar Bera, Teriang, Tembangau, Mengkarak and Kemayan when FM 102.2MHz is receivable in these areas with moderate signal quality. If I added BFM 102.1MHz in Gunung Telapak Burok, the interference may be going worse.

If Pahang FM 102.2MHz Fraser's Hill also covers Bera district interference areas alternatively, so FM 102.1MHz is not suitable to be used in Gunung Telapak Burok.

102.1MHz: Gunung Telapak Burok (for BFM)
102.2MHz: Pahang FM Fraser's Hill
<not suitable, INTERFERENCE in Bera, Teriang, Tembangau and Mengkarak>

Although Pahang FM frequency in Bandar Bera, Temerloh, Kerayong, Mentakab is 107.5MHz, but additional Fraser's Hill 102.2MHz may become alternative frequency to these areas. If BFM 102.1MHz is used in Gunung Telapak Burok, interference to Pahang FM 102.2MHz Fraser's Hill will be happened in these areas below:

- Bandar Bera
- Teriang
- Kerayong
- Mengkarak
- Temerloh
- Mentakab
- Karak
- Tembangau

Kemayan is not affected as Gunung Telapak Burok cannot be received there.

In conclusion, FM 102.1MHz is not suitable to be used in Gunung Telapak Burok. So, I choose to withdraw BFM Seremban frequency antenna pattern configuration drawing plan, but I need help for verification, for blog users who stay in Bandar Bera, Tembangau, Mengkarak, Kemayan and Teriang, please leave comments if you can get Pahang FM 102.2MHz from Fraser's Hill in these areas or any feedback of this blog post.

Pahang FM 102.2MHz Fraser's Hill coverage in Bera