Wednesday 26 August 2020

RF analysis of FM 100.7MHz if transmit in Ulu Slim, Perak.

After I story about Perak FM Ulu Slim gap filler transmitter possibility during PRK N58 Slim River, the vacant frequencies were listed in the article, now I'm going to make a frequency analysis of FM 100.7MHz in Ulu Slim, Perak.


Here's what will happen if Perak FM uses FM 100.7MHz in Ulu Slim, Perak via RF analysis.


For your information, Ulu Slim gap filler transmitter coverage is only limited to Ulu Slim, it does not mean that Ulu Slim covers Slim River, Terolak and Tanjung Malim. 

 

Slim River, Tanjung Malim and Terolak are not the broadcast coverage areas of Nasional FM 91.9MHz and Radio Klasik FM 90.7MHz from Ulu Slim.


==RF analysis==

100.6MHz: MY FM Gunung Kledang

100.7MHz: Perak FM Ulu Slim

<100kHz>


The transmission of Perak FM Ulu Slim 100.7MHz will not interfere MY FM 100.6MHz Gunung Kledang coverage. Although MY FM 100.6MHz Gunung Kledang is interfered by Perak FM 100.7MHz Ulu Slim in Slim River, this does not affect MY FM listeners because MY FM can be tuned loudly and clearly in Slim River on 101.8MHz from Gunung Ulu Kali. In addition, Slim River is not MY FM 100.6MHz Gunung Kledang broadcast coverage area. Inversely, MY FM 100.6MHz Gunung Kledang will not interfere Perak FM 100.7MHz in Ulu Slim because Ulu Slim cannot receive any signal from Gunung Kledang.


100.7MHz: Perak FM Ulu Slim

100.9MHz: Selangor FM Gunung Ulu Kali

<200kHz>


Perak FM 100.7MHz Ulu Slim transmission will not interfere Selangor FM 100.9MHz Gunung Ulu Kali coverage in Selangor state because Ulu Slim transmission doesn't reach Selangor actually. Meanwhile Selangor FM 100.9MHz Gunung Ulu Kali will not interfere Perak FM 100.7MHz in Ulu Slim because Ulu Slim cannot receive Gunung Ulu Kali radio station clearly, somehow Ulu Slim is a blind spot area of Gunung Ulu Kali coverage.


In addition, there is no any listeners impact because RTM can handle both stations perfectly in terms of interference as Perak FM and Selangor FM are under RTM, just like Mutiara FM and Nasional FM, both stations broadcast on 93.9MHz which caused co-channel interference, but no listeners impact actually as Mutiara FM and Nasional FM have alternative frequencies.


In terms of transmission power, 100W is sufficient to cover Ulu Slim on the frequency FM 100.7MHz, and it will not cause interference to Selangor FM 100.9MHz and MY FM 100.6MHz.

 

==Sample coverage of Ulu Slim==




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