Hanoi-Vietnam: General spurious emission limits for E-UTRA FDD

20:45, 10/07/2024

This is a notable content stipulated in Circular 25/2017/TT-BTTTT on the National technical regulation on Evolved Universal Terrestrial Radio Access (E-UTRA FDD) Repeater in Vietnam.

Spurious emissions in Vietnam are emissions generated by the undesired effects of the transmitter such as harmonic emissions, parasitic emissions, etc. Circular 25/2017/TT-BTTTT stipulates the general spurious emission limits as follows:

Frequency Range	Maximum Level	Measurement Bandwidth	Notes
9 kHz to 150 kHz	-36 dBm	1 kHz	Bandwidth as per ITU-R SM.329-12 Recommendation, section 4.1
150 kHz to 30 MHz	-36 dBm	10 kHz	Bandwidth as per ITU-R SM.329-12 Recommendation, section 4.1
30 MHz to 1 GHz	-36 dBm	100 kHz	Bandwidth as per ITU-R SM.329-12 Recommendation, section 4.1
1 GHz to 12.75 GHz	-30 dBm	1 MHz	Bandwidth as per ITU-R SM.329-12 Recommendation, section 4.1. Higher frequencies as per ITU-R SM.329-12 Recommendation, section 2.5. Table 1

More details can be found in Circular 25/2017/TT-BTTTT effective from July 1, 2018.

- Thanh Lam -

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