On 3rd February 2019, which fell 2 days before of Chinese New Year. While I traveled from Klang Valley to Teluk Intan Perak, there were two RTM radio stations Radio Klasik and Nasional FM broadcasted on 90.3MHz and 88.5MHz respectively where I detected the stations in Bidor and Teluk Intan.
Initially I was wondering where are these two radio stations transmitting from, then I made site speculations by predicting the site is either from FELDA Terolak or TLDM Lumut. Based on spectrum analysis, Radio Klasik FM 90.3MHz and Nasional FM 88.5MHz have 200kHz frequency separation from Gunung Kledang transmitted Traxx FM 90.1MHz and Radio Klasik FM 88.3MHz respectively. It is impossible that Lumut separates 200kHz from Gunung Kledang as Lumut is under Gunung Kledang coverage. So, I guessed they're transmitted from Terolak.
In order to get exact verification, so I decided to collect data by recording the reception video and uploaded to YouTube as evidences, next I chose to write in email to RTM, together attaching YouTube videos that I recorded. I collected the data by not only recording video on my TECSUN PL-380 receiver as well as Nissan Almera's radio in Teluk Intan and Bidor, I also recorded the audio from Samsung Galaxy V Plus radio receiver.
After I sent the email, I had been informed that RTM launched pocket filling transmitter for Radio Klasik 90.3MHz and Nasional FM 88.5MHz in Terolak, Perak. Terolak has two transmitting towers, first is in FELDA Terolak Timur, second is TM Terolak microwave towers which located beside MRSM FELDA Terolak, but reception in Sungkai is not clear, so I guess both are from FELDA Terolak Timur.
In my opinion, RTM adding FELDA Terolak (Timur) transmitter for Radio Klasik and Nasional FM is to cover blind spot areas within Terolak, Perak. I may believe the radio reception from existing Gunung Ulu Kali and Gunung Kledang are unstable and not clear in Terolak, Perak because it is hilly area. Other than newly launched radio transmitter, RTM does have analogue TV transmitter in FELDA Terolak (Timur).
Because Malay is the majority population in Terolak, Perak, other than Radio Klasik and Nasional FM, RTM shall also launch pocket filling transmitter in FELDA Terolak for Perak FM.
Radio Klasik and Nasional FM are RTM Malay nationwide stations, meanwhile Perak FM is Perak state Malay radio station, to me it is quite important for Perak FM to have Terolak frequency.
Perak FM operates three frequencies for Southern Perak, FM 95.6MHz from Gunung Kledang is the main transmitter to cover Ipoh, Central Perak, Teluk Intan, Manjung, Kampar and Sungkai, meanwhile FM 97.3MHz Changkat Rembian covers Tapah, Temoh, Bidor and Chenderiang, FM 89.6MHz Bukit Asa covers Slim River and Tanjung Malim.
In Terolak, Perak FM reception are not satisfied much, FM 97.3MHz Changkat Rembian, FM 89.6MHz Bukit Asa and FM 95.6MHz Gunung Kledang are weak. The existing transmitters are not covering Felda Terolak (Timur). In order to stabilize Perak FM reception in Southern Perak, there are two suggestions.
1. Perak FM shall add gap filler transmitter in FELDA Terolak
2. In order to make better reception for Slim River and Tanjung Malim, RTM Perak FM shall change Bukit Asa frequency from 89.6MHz to 107.1MHz, then increase transmitter power to 1kW.
==My suggestion on Perak FM Terolak frequency==
* Frequency: FM 92.4MHz
* Power: 1kW
* TX Site: FELDA Terolak Timur.
== RF analysis ==
92.1MHz: Ai FM Gunung Kledang
92.4MHz: Perak FM Terolak Timur
<300kHz, OK>
92.4MHz: Perak FM Terolak Timur
92.7MHz: Hitz FM Gunung Kledang
<300kHz, OK>
With Perak FM 92.4MHz, Terolak areas will get better and clearer reception than FM 97.3MHz and FM 95.6MHz.
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