FULL STOP! RTM Johor FM 101.9MHz Gunung Pulai transmitter also covers blind spot areas in Batu Pahat District where 105.3MHz Gunung Ledang transmitter is less clear, so FM 102.0MHz is not allowed to be used for Gunung Telapak Buruk radio transmission in Negeri Sembilan to prevent interference against Johor FM 101.9MHz in Central Johor.

On 18th May 2026, I paid a visit to Yong Peng, Labis and Segamat to conduct the frequency investigation to analyze whether Gunung Telapak Buruk radio transmission of FM 102.0MHz is suitable or not.

Generally RTM Johor FM 105.3MHz from Gunung Ledang covers Batu Pahat, but technically 101.9MHz Gunung Pulai transmitter also covers Batu Pahat District where 105.3MHz is less clear in certain areas.

On PLUS Highway from Pagoh to Johor Bahru, RTM Johor FM 105.3MHz becomes less clear in Yong Peng before the toll exit due to the terrain, but 101.9MHz is loud and clear.

Then, from Yong Peng to Segamat, 105.3MHz is slightly less clear at Lam Lee where is located between Yong Peng and Chaah, 101.9MHz is better there.

Through the on site investigation findings, RTM Johor FM 101.9MHz Gunung Pulai transmitter still needs to cover Batu Pahat District, such as Yong Peng, Rengit, Senggarang, Sri Gading, Ayer Hitam, Parit Raja and part of Batu Pahat town where 105.3MHz is not so clear, therefore FM 102.0MHz is not allowed to be used for the radio transmission in Gunung Telapak Buruk, despite it mainly covers Negeri Sembilan.

Someone suggested to increase the transmitter power of RTM Johor FM 105.3MHz in Gunung Ledang from 1kW to 2kW, so the signal of Johor FM 105.3MHz would be clearer in entire Batu Pahat and Kluang District, but I disagree the suggestion because it would cause interference to the coverage of Kool FM 105.3MHz Taman Sentosa transmitter in Johor Bahru.

In Tongkang Pechah, 101.9MHz has stronger signal than 105.3MHz by reading the signal strength of radio receiver.

During my journey from Yong Peng to Segamat, RTM Johor FM 101.9MHz (Gunung Pulai) starts to have interference noise from MY FM 101.8MHz Gunung Ulu Kali transmitter in Labis, then interference becomes more and louder in Tenang, Segamat, Buloh Kasop and Batu Anam.

In my opinion, the interference between RTM Johor FM 101.9MHz and MY FM 101.8MHz in North Johor (especially Segamat District) is considered very common because both transmitters are already far, then the interference happens in non-intended coverage of both transmitters, somewhat RTM Johor FM is already tuned there on 105.3MHz from Gunung Ledang.

As RTM Johor FM 101.9MHz is already interfered by MY FM 101.8MHz in Segamat District, so FM 102.0MHz Gunung Telapak Buruk should not "join" the interference war to avoid further interference.

If FM 102.0MHz is used in Gunung Telapak Buruk, RTM Johor FM 101.9MHz will be completely null in Labis, Segamat, Bekok and Chaah, then its coverage becomes unstable in Batu Pahat, Kluang, Parit Raja, Parit Sulong, Seri Medan, Paloh, Ayer Hitam, and Yong Peng, tropospheric interference is taken into the consideration of this investigation.

In several locations of Batu Pahat, Sinar FM 87.8MHz (Gunung Pulai) has interference from RTM Radio Klasik FM 87.9MHz (Gunung Telapak Buruk) when Radio Klasik FM 87.9MHz is strong in Kampung Minyak Beku, Batu Pahat.

No way to the radio transmission of FM 102.0MHz in Gunung Telapak Buruk, even FM 102.1MHz too.

==Coverage of RTM Johor FM in Central Johor==

* 101.9MHz Gunung Pulai (2kW): Kluang, Senggarang, Rengit, Ayer Hitam, Parit Raja, Seri Medan, Sri Gading, Simpang Renggam, Renggam, Machap, Yong Peng (PLUS HIGHWAY and R&R) and part of Batu Pahat 

* 105.3MHz Gunung Ledang (1kW): Paloh, Semerah, Parit Sulong, Batu Pahat, Yong Peng

RTM Johor FM 101.9MHz masih meliputi beberapa kawasan Daerah Batu Pahat yang tidak dapat menerima isyarat Gunung Ledang (105.3MHz) dengan jelas, FM 102.0MHz tidak sesuai digunakan untuk pemancaran radio di Gunung Telapak Buruk bagi meliputi Negeri Sembilan supaya Johor FM 101.9MHz tidak akan diganggu di Johor Tengah.

Pada 18hb Mei 2026, saya melawat ke kawasan Yong Peng, Labis dan Segamat untuk membuat penyiasatan dan analisis frekuensi FM 102.0MHz sama ada boleh digunakan di Gunung Telapak Buruk atau tidak dengan membuat perbandingan isyarat RTM Johor FM antara 101.9MHz dan 105.3MHz.

Walaupun RTM Johor FM mengatakan 105.3MHz dari Gunung Ledang meliputi Batu Pahat, tetapi secara teknikal 101.9MHz yang dipancar dari Gunung Pulai juga meliputi Daerah Batu Pahat yang tidak dapat menerima isyarat pada 105.3MHz dari Gunung Ledang dengan jelas di beberapa kawasan.

Di Lebuhraya PLUS dari Pagoh ke Johor Bahru, isyarat RTM Johor FM 105.3MHz menjadi kurang jelas di Yong Peng sebelum susur keluar Plaza Tol Yong Peng Utara akibat isyarat Gunung Ledang terhalang oleh Gunung Maokil di kawasan tersebut, 101.9MHz Gunung Pulai lebih jelas di situ.

Kemudian, dari Yong Peng ke Segamat, isyarat 105.3MHz kurang jelas dan mempunyai sedikit gangguan daripada Suria FM (Gunung Ulu Kali) di kawasan Lam Lee, Yong Peng, manakala 101.9MHz lebih jelas.

 

Dengan hasil penyiasatan ini, RTM Johor FM 101.9MHz dari pemancar Gunung Pulai masih perlu meliputi Daerah Batu Pahat seperti Yong Peng, Rengit, Senggarang, Sri Gading, Ayer Hitam, Parit Raja dan sebahagian Bandar Batu Pahat dimana isyarat pemancar Gunung Ledang 105.3MHz tidak jelas di kawasan-kawasan ini. Oleh itu, frekuensi FM 102.0MHz tidak boleh digunakan untuk pemancaran radio di Gunung Telapak Buruk yang meliputi Negeri Sembilan.

Terdapat orang mencadangkan RTM Johor FM untuk menambah kuasa pemancar 105.3MHz di Gunung Ledang kepada 2kW supaya seluruh Daerah Batu Pahat boleh menerima siaran radio ini dengan jelas, tetapi saya membantah cadangan tersebut kerana penambahan kuasa pemancar Gunung Ledang untuk Johor FM 105.3MHz kepada 2kW akan menyebabkan gangguan frekuensi terhadap liputan Kool FM 105.3MHz (Taman Sentosa) di Johor Bahru.

Di Tongkang Pechah, 101.9MHz lebih kuat daripada 105.3MHz.

Semasa perjalanan saya dari Yong Peng ke Segamat, RTM Johor FM 101.9MHz (Gunung Pulai) mula mempunyai gangguan frekuensi daripada MY FM 101.8MHz (Gunung Ulu Kali) di Labis, gangguan frekuensi bertambah teruk apabila saya berada di Tenang, Segamat, Buloh Kasop dan Batu Anam.

Pada pandangan saya, gangguan frekuensi antara Johor FM 101.9MHz dan MY FM 101.8MHz di Johor Utara (Daerah Segamat) adalah perkara yang biasa kerana Johor FM sudah boleh didengari pada frekuensi FM 105.3MHz yang dipancar dari Gunung Ledang. Justeru, gangguan antara dua stesen tersebut berlaku di luar kawasan liputan kedua-dua pemancar.

Sedangkan RTM Johor FM 101.9MHz sudah mempunyai gangguan frekuensi daripada MY FM 101.8MHz di Labis, Tenang, Segamat dan Batu Anam, frekuensi FM 102.0MHz tidak sepatutnya digunakan lagi di Gunung Telapak Buruk untuk mengelakkan gangguan yang lebih teruk terhadap RTM Johor FM 101.9MHz.

FM 102.0MHz Gunung Telapak Buruk tidak sepatutnya "menyertai perang gangguan frekuensi" antara Johor FM 101.9MHz dan MY FM 101.8MHz.

Sekiranya frekuensi FM 102.0MHz digunakan di Gunung Telapak Buruk, RTM Johor FM 101.9MHz akan "disekat" sepenuhnya di Segamat, Labis, Chaah dan Bekok. Selain itu, penerimaan siaran radio Johor FM 101.9MHz akan menjadi tidak stabil di Johor Tengah seperti Batu Pahat, Yong Peng, Ayer Hitam, Kluang, Paloh, Parit Sulong, Seri Medan dan Parit Raja. Gangguan troposfera diambil kira dalam penyiasatan ini. 

Di beberapa kawasan Batu Pahat, Sinar FM 87.8MHz (Gunung Pulai) pun diganggu oleh RTM Radio Klasik FM 87.9MHz (Gunung Telapak Buruk) apabila isyarat Radio Klasik FM 87.9MHz menjadi kuat di Kampung Minyak Beku.

FM 102.0MHz, malah FM 102.1MHz masih tidak boleh digunakan di Gunung Telapak Buruk untuk penyiaran radio.

==Kawasan liputan RTM Johor FM di Johor Tengah==

* 101.9MHz Gunung Pulai (2kW): Kluang, Senggarang, Rengit, Ayer Hitam, Parit Raja, Seri Medan, Sri Gading, Simpang Renggam, Renggam, Machap, Yong Peng (Lebuhraya PLUS dan R&R) dan sebahagian kawasan Batu Pahat 

* 105.3MHz Gunung Ledang (1kW): Paloh, Semerah, Parit Sulong, Batu Pahat, Yong Peng

Sporadic E FM DX in Tamparuli, Sabah, Malaysia - PART 6: Philippines, Vietnam, and China radio stations by Kisah Alkisah

Here are the 20 videos of receiving Sporadic E radio signal from Philippines, Vietnam and China in Tamparuli, Sabah, Malaysia which were recorded by Kisah Alkisah on 14th May 2026.

1. One Radio FM 91.3MHz (1143 from Tabaco City, Philippines)

2. DWFO-FM 87.5MHz Republika FM (1077km from Quezon City, Philippines)

3. Hainan GD News Radio FM 88.6MHz (1617km from Hainan, China)

4. FM 89.1MHz (Philippines)

Co-channel interference with Al-Quran FM 89.1MHz from Bandar Seri Begawan Brunei (Bukit Subok) was detected. 

5. DWIZ FM 89.3MHz (1181km from Dagupan City, Pangasinan, Philippines)

6. DZRV-FM Spirit FM 90.1MHz (1116km from Nueva Vizcaya, Philippines)

7. Heart FM 90.5MHz (Manilla, Philippines)

8. Voice of Vietnam VOV Giao Thong FM 91.0MHz (1457km from Ho Chin Minh City, Vietnam)

9. Win Radio FM 91.5MHz (Philippines)

10. DWFM - FM Radio 92.3MHz (1083km from Antipolo, Philippines)

11. FM 93.1MHz (Philippines, but co-channel interference)

12. FM 93.5MHz (Philippines)

13. FM 94.5MHz (Co-channel interference between Thailand and Philippines)

14. Voice of Vietnam VOV-1 FM 95.0MHz (1406km from Mount Son Tra, Da Nang, Vietnam)

15. FM 95.3MHz (Philippines)

16. Barangay LS FM 97.1MHz (1077km from Quezon City, Philippines)

17. Home Radio FM 97.9MHz (1071km Pasig City, Metro Manilla, Philippines)

18. DZWR FM 99.77MHz Radio Maria (1341km from Vigan City, Ilocos Su, Philippines)

19. Q-Radio FM 105.1MHz (1077km from Quezon City, Philippines)

20. DWNU Wish FM 107.5MHz (1083km from Antipolo, Philippines)

 

All of these 20 radio stations in Tamparuli, Sabah, Malaysia were Sporadic E propagation.

Comprehensive coverage list of Gunung Serapi and Bukit Djin/Antu radio transmitters in Kuching, Sarawak.

==Gunung Serapi==

* Clear coverage: Kuching, Bau, Lundu, Sematan, Kota Samarahan, Asajaya, Sebuyau, Simunjan & Siburan

* Moderate coverage: Saratok, Pusa, Kabong, Maludam & Serian

* Weak coverage: Simanggang, Engkilili, Betong, Spaoh, Debak, Roban, Lingga

==Bukit Djin/Antu==

* Clear coverage: Kuching, Bau, Kota Samarahan, Siburan

* Moderate coverage: Asajaya

* Weak coverage: Serian, Saratok, Simunjan, Simanggang, Engkilili, Lingga, Sebuyau, Lundu, Sematan

Note: Not all Bukit Djin radio stations are available outside Kuching.

Sporadic E FM DX in Tamparuli, Sabah, Malaysia - PART 5: Thailand radio stations by Kisah Alkisah

Here are another batch of Thailand radio stations reception via Sporadic E in Tamparuli, Sabah by Kisah Alkisah which are recorded on 9th May 2026.

 

* FM 88.25MHz 

 

150kHz adjacent channel interference from RTM Radio Klasik FM 88.1MHz Lawa Mandau transmitter.

 

* FM 88.5MHz 

 

 

* FM 90.25MHz

 

 

* FM 92.5MHz (Radio Thailand from Bangkok)

 

* FM 95.0MHz

 

 

* FM 96.0MHz

 

 

* FM 96.5MHz 

Gunung Pulai and Gunung Ledang radio signal reception in Jemaluang, Johor.

 

Jemaluang is a small town located in Mersing District, Johor. Same with Mersing and Endau, but unlike other locations in Johor, only 7 radio stations are clearly available in Jemaluang, transmitted from Bukit Tinggi transmitter.

 

1. RTM Radio Klasik FM 90.1MHz

2. RTM Nasional FM 90.9MHz

3. RTM Johor FM 92.1MHz

4. RTM Traxx FM 92.9MHz

5. RTM Ai FM 89.1MHz

6. RTM Minnal FM 88.3MHz

7. Best FM 102.5MHz

 

Gunung Pulai and Gunung Ledang transmitted radio stations can be received weakly in Jemaluang, Johor. 

 

Rafiq managed to tune radio stations from Gunung Pulai and Gunung Ledang in Jemaluang, Johor in early of May 2026, meanwhile I was used to tune IKIM FM 106.2MHz and MY FM 95.4MHz from Gunung Pulai in same location 2 years ago before departing to Tioman Island, but I didn't manage to tune Gunung Ledang radio stations in Jemaluang as I heavily focused to monitor Singapore and Batam radio stations.

 

Here are the videos of tuning Gunung Pulai and Gunung Ledang transmitted radio stations by Rafiq.

 

1. Kool FM 88.1MHz Gunung Ledang (141km)

 

2. Fly FM 94.0MHz Gunung Ledang (141km)

 

 

3. RTM Asyik FM 95.6MHz Gunung Ledang (152km)  

 

Video was recorded at Felda Tenggaroh 2.

 

4. 988 FM 98.2MHz Gunung Ledang (141km) & 99.9MHz Gunung Pulai (74km)

 

 

5. IKIM FM 89.5MHz Gunung Ledang (141km) & 106.2MHz Gunung Pulai (74km)

  

 

6. Hot FM 104.3MHz Gunung Ledang (141km)

 

 

7. Best FM 94.8MHz Gunung Ledang (141km)

 

 

8. RTM Radio Klasik FM 93.6MHz Gunung Ledang (141km)

 

 

All videos were recorded at Jemaluang Dairy Valley, except RTM Asyik FM 95.6MHz.

 

In Jemaluang, Gunung Pulai radio signal is clearer than Gunung Ledang for 988 and IKIM FM, but Radio Klasik FM 93.6MHz and Nasional FM 96.6MHz are the clearest Gunung Ledang radio station, following by Kool FM 88.1MHz, Fly FM 94.0MHz and RTM Asyik FM 95.6MHz. 

 

On 28th April 2024, I was used to receive IKIM FM 106.2MHz and MY FM 95.4MHz from Gunung Pulai in Jemaluang town, Johor before going to Pulau Tioman in Pahang, the signal was weak.

 

* MY FM 95.4MHz

 

* IKIM FM 106.2MHz

 

 

In addition, Rafiq recorded the frequency comparison videos of RTM Nasional FM and Johor FM in Jemaluang.

* Nasional FM 96.6MHz Gunung Ledang/105.7MHz Gunung Pulai/90.9MHz Bukit Tinggi

 

 

* Johor FM 101.9MHz Gunung Pulai/92.1MHz Bukit Tinggi

   

 

Alongside Gunung Pulai and Gunung Ledang radio stations, Rafiq also successfully received RTM Minnal FM 96.3MHz from Gunung Ulu Kali transmitter in Jemaluang, Johor. Hence, Minnal FM 96.3MHz from Gunung Ulu Kali becomes the furthest radio station tuned in Jemaluang, Johor with 283km (video was recorded at Felda Tenggaroh 2).

 

Menumbok ialah kawasan di Sabah yang boleh menerima siaran radio RTM Labuan FM 89.4MHz dari Bukit Timbalai.

 

 

Walaupun RTM Labuan FM ialah stesen radio tempatan untuk Wilayah Persekutuan Labuan, tetapi stesen radio ini masih boleh diterima di sebahagian kecil Wilayah Sabah.

Di Wilayah Sabah, RTM Labuan FM hanya boleh diterima di Menumbok pada frekuensi FM 89.4MHz yang dipancar dari Bukit Timbalai.

 

Pada 19hb April 2026, saya bercuti di Kota Kinabalu dan mengunjungi 10 kawasan di Wilayah Sabah, termasuk Menumbok.

 

Apabila saya berada di Menumbok, Sabah, fokus utama saya ialah menerima siaran radio dari Limbang, Brunei dan Kota Kinabalu, saya tidak lupa untuk menguji isyarat siaran RTM Labuan FM di Menumbok.

 

RTM Labuan FM bersiaran pada 2 frekuensi di Wilayah Persekutuan Labuan, iaitu FM 89.4MHz Bukit Timbalai dan FM 103.7MHz RTM Labuan.

 

Frekuensi FM 103.7MHz dari RTM Labuan menghantar isyarat konti ke pemancar FM 89.4MHz di Bukit Timbalai.

 

 

 

Di Menumbok, Labuan FM 89.4MHz dari Bukit Timbalai lebih jelas dan kuat daripada FM 103.7MHz dari RTM Labuan.

 

Jarak dari Bukit Timbalai ke Menumbok ialah 21km, manakala RTM Labuan ke Menumbok ialah 12km.

 

Tiada isyarat boleh diterima di luar kawasan Menumbok seperti Sipitang, Beaufort, dan Kuala Penyu. Oleh itu, Menumbok ialah kawasan Sabah yang boleh menerima siaran RTM Labuan FM 89.4MHz dengan isyarat sederhana.

(UPDATE) RTM Sibu FM 102.1MHz Bukit Singgalang transmitter radio reception in Balingian, Sarawak

Today Cock DXer visits Balingian, Sarawak for radio signal check in conjunction with his event in Mukah, so I drop a radio reception request.

 

Balingian is a small town in Mukah Division, but it is not far from Bintulu Division border.

 

RTM Sibu FM has Mukah frequency on 98.7MHz, but it covers only Mukah town and Dalat. In Daro, Belawai and Matu, Sibu FM is tuned on 94.6MHz from Bukit Kayu Malam transmitter.

 

Cock DXer has recorded a video of tuning RTM Sibu FM 102.1MHz in Balingian, Sarawak, transmitted from Bukit Singgalang just evening.

 

 

Sibu FM is still receivable in Balingian, Sarawak via Bukit Singgalang transmitter on the frequency 102.1MHz, but the signal is weak.

 

In my opinion, after watching the radio reception video of RTM Sibu FM 102.1MHz in Balingian, Sarawak which recorded by Cock DXer, the signal is weak like what I tuned in Daro and Matu. The radio reception of RTM Sibu FM 102.1MHz in Balingian is same as Daro and Matu where Sibu FM 102.1MHz is weak in 3 towns. 

 

Balingian = Daro = Matu = Bintangor

 

Previously I had rolled out the coverage of RTM Sibu FM 102.1MHz Bukit Singgalang transmitter and zoomed the map of Balingian area, by comparing with the radio reception video, the simulated coverage map of Sibu FM 102.1MHz is not accurate.

 

As Sibu FM and Bintulu FM mostly relay from RTM Wai FM Iban, the weak radio reception of RTM Sibu FM 102.1MHz in Balingian, Sarawak does not affect Iban listeners in that small town between Mukah and Bintulu because Iban people can tune Wai FM Iban via Bintulu FM 97.5MHz (TX_Bukit Setiam) loudly and clearly in Balingian, Sarawak. 

 

Compare with the radio reception between Sibu FM 102.1MHz (Bukit Singgalang) and Bintulu FM 97.5MHz (Bukit Setiam) in Balingian, Iban listeners who tune RTM Wai FM programs in Balingian would have already tuned it via Bintulu FM 97.5MHz, instead of Sibu FM 102.1MHz because Bintulu FM 97.5MHz is louder and clearer than Sibu FM 102.1MHz in Balingian, Sarawak.

 

Sibu FM only broadcasts 3 hours Malay program daily from 9am to 12pm, but Balingian listeners who tune 3 hours Malay programs on Sibu FM can tune it alternatively by downloading RTM Klik or listening on Sibu FM's Facebook LIVE if they cannot receive Sibu FM 102.1MHz clearly in Balingian, Sarawak.

 

From Mukah to Bintulu, RTM Sibu FM 102.1MHz Bukit Singgalang transmitter becomes weak in Balingian, then the signal goes disappeared after Balingian when heading to Kuala Tatau. In Mukah Division, Balingian is the final coverage of RTM Sibu FM 102.1MHz Bukit Singgalang transmitter with weak signal.

 

==RTM Sibu FM radio reception in Balingian, Sarawak by Cock DXer (@Sarawakian_12)== 

- Frequency: FM 102.1MHz

- Power: 1kW

- Transmitter site: Bukit Singgalang, Selangau, Sarawak

- Receiving site: Balingian, Mukah Division, Sarawak

- Distance: 64km

- Signal condition: Weak (3.5/10 rating) 

 

==Wai FM Iban in Balingian, Sarawak==

* Suggestion: Tune it on FM 97.5MHz

 

==Sibu FM 3 hours Malay program, tune in Balingian, Sarawak== 

* FM radio frequency platform: FM 102.1MHz Bukit Singgalang (weak signal)

* Alternative platform: RTM Klik (mobile app), online streaming or Sibu FM's Facebook LIVE 

FM 90.5MHz from Gunung Telapak Buruk is the alternative frequency of Minnal FM in Northwest Melaka when FM 103.3MHz Gunung Ledang transmitter suffers co-channel interference from Era FM Gunung Ulu Kali transmitter.

Generally RTM Minnal FM is tuned on FM 103.3MHz from Gunung Ledang in Melaka, but there is co-channel interference from Era FM 103.3MHz Gunung Ulu Kali transmitter in certain areas of Melaka. This is because Minnal FM and Era FM are sharing same frequency which is on 103.3MHz.

Gunung Ulu Kali radio signal can overspill to coastal areas in Melaka, from Kuala Sungai Baru to Bandar Hilir. When Gunung Ulu Kali and Gunung Ledang radio stations are using same frequency, it causes co-channel interference in Melaka.

Minnal FM 103.3MHz Gunung Ledang transmitter is interfered by Era FM 103.3MHz from Gunung Ulu Kali in Kuala Sungai Baru, Lubok Cina, Masjid Tanah, Sungai Udang and Tanjung Kling where are located across coastal of Melaka, however the co-channel interference between Minnal FM and Era in Melaka does not affect the listeners because the listeners can tune via alternative frequency.

In Masjid Tanah, Kuala Sungai Baru, Sungai Udang, Lubok Cina and Tanjung Kling of Melaka state, RTM Minnal FM can be tuned loudly and clearly on 90.5MHz from Gunung Telapak Buruk, meanwhile FM 96.3MHz from Gunung Ulu Kali is another weak alternative frequency in Northwest Melaka.

Era is already tuned on FM 90.3MHz from Gunung Ledang in Melaka, but it can also be tuned on FM 103.6MHz from Gunung Telapak Buruk if FM 90.3MHz has adjacent channel interference from Minnal FM 90.5MHz in Northwest Melaka.

Dear all Minnal FM's listeners who tune in Melaka, if you detect co-channel interference from Era when you tune Minnal FM on 103.3MHz in Melaka, please tune alternatively on 90.5MHz which is Seremban frequency from Gunung Telapak Buruk transmitter tower.

This is my video of tuning RTM Minnal FM 90.5MHz in Masjid Tanah, Melaka where I recorded 3 years ago on 30th April 2023.

RTM Nasional FM and Sabah VFM are now officially available on shortwave frequencies. SW 15295kHz for Nasional FM; SW 11885kHz for Sabah VFM.

 

Dear all shortwave listeners, Radio Televisyen Malaysia (RTM) has officially launched Nasional FM and Sabah VFM on shortwave frequencies since April 2026.

 

Nasional FM is on SW 15295kHz, meanwhile Sabah VFM is on SW 11885kHz, both are transmitted from RTM Kajang shortwave transmitter masts. 

 

Nasional FM SW 15295kHz transmits at 10kW power with non-directional antenna to target nationwide, meanwhile Sabah VFM SW 11885kHz transmits at 100kW power and beams at 93DEG angle to target East Malaysia. (Source: short-wave.info)

 

Although many people listen to the radio digitally via online streaming and mobile app, but shortwave radio is still relevant because it targets the rural areas where have no coverage of internet and FM transmission.

 

Nasional FM has many gap filler FM transmitters across Malaysia, but some of gap filler FM transmitters in remote areas are malfunction, so these areas are backed up by shortwave transmitter SW 15295kHz when gap filler transmitters are down.

 

Sabah VFM has no coverage in the areas between Nabawan and Tawau, so its shortwave frequencies mainly cover the rural areas in Sabah. 

 

Alongside Sabah, RTM Sabah VFM also can be received in Sarawak via shortwave frequency SW 11885kHz.

 

Broadcast hours of Nasional FM 15295kHz and Sabah VFM 11885kHz are from 0000 hours to 1200 hours (UTC), meanwhile local broadcast hours are from 0800 hours to 2000 hours. 

 

Frekuensi IKIM FM di seluruh Malaysia

* 91.5MHz: Kuala Lumpur, Selangor, Pahang Barat & Perak Selatan (Gunung Ulu Kali)

* 102.7MHz: Negeri Sembilan & Jerantut (Gunung Telapak Buruk)

* 89.5MHz: Melaka & Johor Utara (Gunung Ledang)

* 106.2MHz: Johor Selatan & Singapura (Gunung Pulai)

* 89.0MHz: Kedah, Perlis, Pulau Pinang & Taiping (Gunung Jerai)

* 102.7MHz: Balik Pulau (Bukit Genting)

* 102.7MHz: Ipoh, Perak Tengah & Cameron Highlands (Gunung Kledang)

* 89.6MHz: Kuantan (Bukit Pelindung)

* 100.2MHz: Kuala Terengganu (Bukit Besar)

* 89.8MHz: Kota Bharu (Bukit Panau)

* 93.7MHz: Kuching (Bukit Djin)

* 104.0MHz: Miri (Tanjong Lobang)

* 93.9MHz: Kota Kinabalu (Bukit Karatong)

* 107.3MHz: Lahad Datu, Semporna & Sandakan (Gunung Silam)

* 100.7MHz: Tawau & Indonesia: Nunukan (Gunung Andrassy)

88.3 Jia FM has new successor to take over its former frequency FM 88.3MHz in Singapore?

It is almost 6 months of 88.3 Jia FM and Power 98FM switched off their broadcast on the FM radio frequencies transmission platform as they shifted to focus digitally on Kakee app.

Today's morning, I receive a video from Jony Wong who has detected an unknown test transmission on FM 88.3MHz in Johor Bahru, Malaysia.

In the video, FM 88.3MHz mentions something "Goplayster", but the signal is not clear with rough audio quality because I believe that FM 88.3MHz is operated at low power transmission, but the transmitter site is an unknown.

Is it a licensed radio broadcast in Singapore? I don't know. In Singapore, a now defunct radio station would have surrendered the frequency to Infocomm Media Development Authority of Singapore (IMDA) if it decides to close the broadcast. Then, IMDA would open a new frequency tender to the new radio players, then the new radio players submit their radio format, targeting listeners and technical proposals to IMDA via tender. Then, IMDA will make final decision of awarding the frequencies to new radio player like what IMDA did the tender of FM 89.3MHz, FM 92.0MHz and FM 96.3MHz.

Meanwhile FM 98.0MHz and FM 99.5MHz are still vacated in Singapore.

Is there a new upcoming Singapore radio station on FM 88.3MHz?

FM radio stations availability in Nabawan, Sabah

Nabawan is a small town in Interior Division of Sabah, located between Keningau and Sapulut. 

During my radio DXpedition tour in Sabah from 19th to 21st April 2026, as there are no distant radio stations from Bukit Karatong and Bukit Mas receivable in Keningau, I didn't decide to perform radio DXing activity in Nabawan. In addition, it is quite far to travel from Keningau to Nabawan, somewhat I visited Keningau under daytrip, then I departed back to Kota Kinabalu.

Same as Keningau and Tenom, only RTM radio stations are available in Nabawan, Sabah, but RTM has 4 gap filler transmitters in Nabawan which operate Radio Klasik FM 88.3MHz, Nasional FM 89.1MHz, Sabah FM 89.9MHz and Traxx FM 90.6MHz, meanwhile Ai FM, Sabah VFM and Keningau FM have no gap filler transmitters in Nabawan, but these radio stations can be received in Nabawan, Sabah via Bukit Sigapon transmitter with moderately weak signal.

No signal of Limbang (Bukit Mas) and Brunei radio stations are receivable in Nabawan, Sabah as I could not receive any radio stations from Bukit Mas in Keningau, meanwhile Brunei radio stations from Bukit Subok are already weak and almost zero signal in Keningau.

Although Keningau FM has no gap filler transmitter in Nabawan like Sabah FM, Nasional FM, Traxx FM, and Radio Klasik, but this radio station claims that it can be received in Nabawan via 94.7MHz from Bukit Sigapon transmitter, so automatically RTM Ai FM and Sabah VFM can be received in Nabawan on 92.3MHz and 93.1MHz respectively, but the signal is not strong as Nabawan transmitter.

In Nabawan, there are only 7 available radio stations.

1. RTM Radio Klasik FM 88.3MHz (Nabawan transmitter)

2. RTM Nasional FM 89.1MHz (Nabawan transmitter)

3. RTM Sabah FM 89.9MHz (Nabawan transmitter)

4. RTM Traxx FM 90.6MHz (Nabawan transmitter)

5. RTM Ai FM 92.3MHz (Bukit Sigapon)

6. RTM Sabah VFM 93.1MHz (Bukit Sigapon)

7. RTM Keningau FM 94.7MHz (Bukit Sigapon)

The distance from Bukit Sigapon to Nabawan is about 47km, so Bukit Sigapon transmitter is still considered semi-local radio stations in Nabawan.

Era FM Sarawak 101.3MHz dari Bukit Lambir MIRI ialah stesen radio yang paling jauh diterima di Kota Kinabalu dan Tuaran, Sabah.

 

Walaupun frekuensi siaran radio Era FM Sarawak 101.3MHz meliputi Miri, Bekenu, Batu Niah, Marudi dan sebahagian Negara Brunei (Kuala Belait & Tutong), tetapi Era FM Sarawak 101.3MHz boleh diterima di Kota Kinabalu dan Tuaran, Sabah, tetapi bukan sepanjang masa.

 

Pada 19hb April 2026, saya berkunjung ke Kota Kinabalu dan beberapa kawasan di Negeri Sabah. Di Kota Kinabalu, saya meluangkan masa untuk bersiar-siar pada waktu senja, berjalan dari hotel ke kawasan Bulatan Ikan Marlin dengan membawa radio.

 

Di kawasan sekitar Bulatan Ikan Marlin, saya menerima isyarat siaran radio Era FM Sarawak pada frekuensi FM 101.3MHz dari pemancar Bukit Lambir yang meliputi Miri dan sebahagian Brunei.

 

Pada waktu itu, Era FM Sarawak memainkan lagu tanpa juruhebah radio (atau dikenali sebagai DJ) pada pukul 6 petang, oleh itu saya menunggu sehingga waktu jeda iklan. Apabila Era FM Sarawak mengudarakan iklan, saya merakam video isyarat Era FM Sarawak serta merta.

 

 

Isyarat radio Era FM Sarawak 101.3MHz adalah sederhana lemah di Kota Kinabalu pada waktu senja semasa matahari terbenam, tetapi saya mengklasifikasikan penerimaan isyarat radio Era FM Sarawak 101.3MHz di Kota Kinabalu sebagai pemancaran bersifat troposfera kerana Era FM Sarawak 101.3MHz tidak sentiasa boleh diterima di Kota Kinabalu sepanjang masa. 

 

Jarak penerimaan siaran Era FM Sarawak 101.3MHz dari pemancar Bukit Lambir ke Pusat Bandar Kota Kinabalu ialah 299km.

 

==Penerimaan siaran Era FM Sarawak di Kota Kinabalu==

* Frekuensi: FM 101.3MHz

* Kuasa pemancar: 2kW

* Tempat pemancar: Bukit Lambir, Miri, Sarawak

* Tempat penerima: Jalan Tuan Fuad Stephens, Pusat Bandar Kota Kinabalu, Sabah (berdekatan dengan Bulatan Ikan Marlin)

* Jarak: 299km

* Tarikh/masa: 19hb April 2026 6:37 petang (Waktu Malaysia UTC+8) 

 

 

 

 

Selain itu, saya pun menerima siaran Era FM Sarawak pada frekuensi yang sama (101.3MHz dari Bukit Lambir) di Tuaran, Sabah apabila saya memandu dari Kota Kinabalu ke Kudat pada 21hb April 2026. Video dirakam pada waktu pagi (pukul 06:47 pagi) di Jambatan Batangan yang berdekatan dengan Sungai Tuaran, isyarat telah hilang selepas Sungai Tuaran. 

 

 

 

Tiada isyarat boleh diterima di Kota Belud, Kudat dan Kota Marudu. Semasa perjalanan pulang ke Kota Kinabalu pada waktu tengah hari, saya tidak dapat menerima siaran Era FM Sarawak 101.3Mhz lagi di Tuaran kerana pemancaran radio di kawasan tersebut adalah bersifat troposfera.

 

Jarak dari pemancar Bukit Lambir ke Tuaran ialah 326km. Sebelum ini, peminat radio DXer dari Sabah bernama Kisah Alkisah pun menerima isyarat Era FM Sarawak 101.3MHz di Tuaran, Sabah.

 

 

 

Era FM Sarawak 101.3MHz dari Bukit Lambir (Miri) ialah stesen radio yang paling jauh diterima di Kota Kinabalu dan Tuaran, Sabah.  

Furthest radio stations tuned in Sabah (with more than 130km distance range)

 

1. Kota Kinabalu

* Era FM Sarawak 101.3MHz Bukit Lambir MIRI (299km)

 

 

2. Tawau

* RTM Sandakan FM 90.1MHz, Era FM Sabah 103.0MHz, Melody FM 102.2MHz Bukit Trig SANDAKAN (178km)

 

 

3. Semporna

*  Era FM Sabah 103.0MHz and RTM Sandakan FM 90.1MHz (162km)

 

 

4. Kundasang

* RTB Nur Islam FM 94.9MHz Andulau BRUNEI (275km)

 

 

5. Kimanis 

* RTM Sarawak FM 101.5MHz & Cats FM 88.7MHz Bukit Mas LIMBANG (138km)

 

 

6. Keningau

* RTB Harmoni FM 97.7MHz Andulau BRUNEI (199km)

 

 

7. Tenom

* RTB Nasional FM 93.8MHz, Nur Islam FM 94.9MHz and Harmoni FM 97.7MHz Andulau BRUNEI (169km)

 

 

8. Ranau

* RTM Sarawak FM 101.5MHz Bukit Mas LIMBANG (227km)

 

 

9. Lahad Datu

* Radyo Pilipinas DXAS-FM 104.7MHz Tawi-Tawi PHILIPPINES (159km)

 

 

10. Tuaran

* Era FM Sarawak 101.3MHz Bukit Lambir MIRI (326km)