The minimum of the previous solar cycle, Solar Cycle 24, occurred in December 2019, which also marked the start of the new Solar Cycle 25. The first radio bursts of the new solar cycle were observed in the spring season 2020. In this work we will present three type III solar bursts which were observed in May and June 2020 at radio frequencies between 18 – 90 MHz. There are two radio observatories in Finland that are capable of doing low-frequency solar radio observations: Aalto University Metsähovi Radio Observatory (MRO) and Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA) of the Sodankylä Geophysical Observatory, University of Oulu. The instruments of the two institutes have different design and characteristics, and they operate in rather different radio interference environments. We will compare simultaneous observations from these two instruments and we will also discuss the properties of these type III solar bursts.

前一个太阳周期的最小周期，即太阳周期24，发生在2019年12月，这也标志着新的太阳周期25的开始。在2020年春季，观察到了新太阳周期的第一个无线电脉冲。将会呈现三个Ⅲ型太阳爆发，它们是在2020年5月和2020年6月在18 – 90 MHz的无线电频率下观测到的。芬兰有两个能够进行低频太阳射电观测的射电观测站：奥卢大学奥丹大学阿尔萨斯大学梅沙霍维无线电观测站（MRO）和基尔皮斯耶尔维大气成像接收器阵列（KAIRA）。两家研究所的仪器具有不同的设计和特性，并且它们在相当不同的无线电干扰环境中运行。