(RF and coverage analysis) FM 103.0MHz Yala, Thailand from Khao Bu Yo.

After making basic RF analysis, FM 103.0MHz is suitable in Rueso and Yi-ngo for low power community radio broadcast within Narathiwat province, Thailand.

Now I analyze FM 103.0MHz transmission for Yala province (except Betong), Thailand. Tested parameter is following below:

 

* Frequency: FM 103.0MHz

* Power: 0.5kW

* Transmitter site: Khao Buyo, Tambon Bannang Sareng, Mueang Yala district, Yala Province, Thailand. 

FM 100.0MHz (Thailand army radio station) is the only radio broadcaster to operate its transmitter in Khao Buyo tower. In addition, Thailand digital terrestrial television service runs a repeater transmission at same tower with 1kW ERP.

 

==RF analysis==

103.0MHz: Khao Buyo, Yala (500W)

103.0MHz: Thepha, Songkhla

<0kHz, OK>

102.75MHz: FM One Pattani

103.0MHz: Khao Buyo, Yala (500W)

<250kHz, OK>

102.9MHz: RTM Kelantan FM Wakaf Che Yeh

103.0MHz: Khao Buyo, Yala (500W)

<100kHz, OK>

FM 103.0MHz radio transmission from Khao Buyo does not give any interference impact to Malaysia radio station as the hill is located in Yala town, meanwhile Khao Pok Yo overspill signal to Malaysia (Kedah, Penang, Hulu Perak and Kelantan) and cause interference to Malaysia radio station coverage if a frequency plan is not properly planned.

It may look ok if FM 103.0MHz from Khao Buyo operates same frequency with FM 103MHz from Thepha, but co-channel interference against Thepha Radio FM 103MHz in Thepha district, Songkhla province if FM 103MHz Yala from Khao Buyo operates at higher transmitter power (more than 0.5kW).

Yala radio broadcaster which operates FM 103.0MHz in Khao Buyo can avoid interference against Thepha Radio FM 103MHz by using low power transmitter as 500W and directional antenna to avoid beaming to northwest.

 

The coverage map that I generate is prediction. If FM 103MHz from Khao Buyo is causing interference against Thepha FM 103MHz, the Yala broadcaster who runs FM 103.0MHz has to shift transmitter site to the town based (example: Tambon Sateng).

==Proposed paramater for Yala radio broadcaster of using FM 103.0MHz==

* Frequency: FM 103.0MHz

* Power: 0.5kW

* Transmitter site: Khao Buyo, Tambon Bannang Sareng, Mueang Yala District, Yala province, Thailand

* Antenna system: 2 bay array dipole. Main loop beams to northeast direction.

* Antenna height: 60m