RTM Perlis FM receiving condition in Langkawi Island

RTM Perlis FM is the RTM's northernmost state radio station to serve Perlis state, it broadcasts on FM 102.9MHz from RTM Padang Pauh transmitting site at 2kW transmitter power. From Padang Pauh transmitting site, Perlis FM covers whole state, also part of North Kedah. 

Alor Setar can still receive Perlis FM 102.9MHz, but unclear receiving quality.

For Langkawi Island, although it is not far from Perlis, but Perlis FM 102.9MHz is not receivable there because the transmission site Padang Pauh is low height area. In terms of geographical condition, most of Perlis areas are flat land, except Wang Kelian where has terrains. For transmission coverage, Langkawi cannot receive Perlis FM 102.9MHz because the island is full of mountains. This never gives any listeners impact because Langkawi is not broadcast area of Perlis FM, but listeners can continue listen to the station through online and RTM Mobile app.

In Langkawi, when you tune to FM 102.9MHz, it is very hard to get Perlis FM, but the signal of FM 102.9MHz is usually adjacent channel noise from Thailand radio station, named Thor Por Sii FM 103.0MHz from Trang province (4th Army Radio).

102.9MHz: Perlis FM Padang Pauh

103.0MHz: Thor Por Sii Trang Thailand

<100kHz separation>

Interference each other is found in Langkawi, but Thor Por Sii FM 103.0MHz interference to Perlis FM 102.9MHz is more than the interference of Perlis FM 102.9MHz to Thor Por Sii FM 103.0MHz because Thor Por Sii FM 103.0MHz Trang operates high transmission power 3.5kW, its station is receivable in Thung Wa (North Satun province, next to Palian district of Trang province).

I was used to receive both stations in Langkawi. At the hotel, I could received both, but Thor Por Sii FM 103.0MHz is a bit stronger than Perlis FM 102.9MHz. 

Thor Por Sii FM 103.0MHz can be received in Kuah, Langkawi with weaker signal condition, I received at Dataran Lang. Perlis FM has no signal there. At top peak of Gunung Raya, I could capture both stations, but Perlis FM 102.9MHz has more interference noise from Thor Por Sii FM 103.0MHz Trang province, Thailand.

Perlis FM 102.9MHz is also not receivable in Langkawi's neighbour island, named Ko Lipe. Thailand's Ko Lipe Island gets interference noise from Thor Por Sii FM 103.0MHz Trang too when tune the radio dial on FM 102.9MHz.