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We present a brief report about discovery of modulation in four fundamental-mode RR Lyrae type stars V1065 Aql, CzeV980, FI Sge, and CzeV1242. CzeV980 and CzeV1242 are new RRab type stars that were previously unknown to be variable. The modulation is clearly apparent in all four stars in our data. Our data sets are not appropriate for modulation period determination. However, except for CzeV1242, there are ASAS--SN data available that allow at least rough estimation of the modulation period.
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Skarka et al. (2018) studied this question.
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