Simple Methods for Coverage Prediction of the Digital Trunking Radio Communication System

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Arief Goeritno
Ika Setyawibawa
Dwi Suhartono


This paper describes a radio communication infrastructure based on digital trunking radio communication system for coverage prediction for independent/private use. The objectives of this study include (1) connectivity between the repeater and radio devices and (2) simulation of radio signal coverage prediction and observation of communication performance. The connection method between the repeater device and the radio is in the form of tuning five main parameters, namely -transmitter (Tx) and receiver (Rx) frequencies, -user ID, -IP address for each site, -channel trunking mode, and –talk group ID. Simulation-based is used for predicting radio signal coverage area for repeater system based on Digital Radio Mobile (DMR) application and observation of the communication performance. Tuning on the repeater system, namely -Tx and Rx frequencies, -user ID, -talk group ID, -power on the Simoco SDB680XD repeater, and -sys code; while on radio equipment, namely, -Tx and Rx frequencies, -use of sys code, -talk up ID, and -radio ID. Prediction and observation of the coverage area based on several parameters as input, namely -type of area for radio system operation, -the type and specifications of the antenna used, -losses arising from the presence of cables and cable connector connections, -the coordinates of the installation of the transmitter station or the placement of the repeater, longitude, and latitude, -the height of the transmitting station or repeater antenna in meters, -radio receiver sensitivity in dB, and -the power used in the repeater and radio receiver in watts. The simulation results are in the form of a screenshot with a area coverage of ​​140,938 kilometers. Based on observations of communication performance on radio communication systems through the use of dummy loads, namely group calls, individual calls, and emergency calls. The observations-based results, the system is well connected.


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How to Cite
A. Goeritno, I. Setyawibawa, and D. Suhartono, “Simple Methods for Coverage Prediction of the Digital Trunking Radio Communication System”, INFOTEL, vol. 13, no. 4, Dec. 2021.


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