a lot of RFI monitoring for FAST has been done. Table \[tab:6\] lists the known RFI sources. From the table, Civil aviation occupies 960-1215 MHz and ASIASTAR a geostationary satellite occupies 1467-1492 MHz. Some satellites occupy the middle frequency band, which only appear when they pass over or near the telescope. Unfortunately, the RFI monitoring doesn’t have the same high-frequency resolution as our SETI back end. Some of the narrow-band RFI are not picked up by the monitor, also we can not mark the RFI with exact frequency channels now due to the low frequency resolution. It is an important and meaningful work to find the sources of these narrow-band RFI as the next step.

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Conclusion and Future Plans {#sec:7}
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FAST is the largest single-aperture telescope in the world; it’s 19 beam receiver allows rapid and sensitive sky surveys with robust RFI rejection, ideal for SETI.

We have developed a SETI signal detection pipeline to operate on FAST’s 19-beam seti instrument. We conducted the first observational test of SETI with the 19-beam receiver of FAST in July, 2019. By injecting test signals (“birdies”) into our data, we demonstrated the pipeline’s RFI removal capability. The ETI signal candidates were 