At 21:27 02/09/19 +0900, you wrote: >I know RX2500 must be the best but before that I would like to try out >a KK7B's R2 direct conversion receiver I had already made and worked. >I know that K6NA at SETI uses it by modifying the filter etc. Sorry made a typo. Read K6TX at SETI; http://www.setileague.org/hardware/r2_seti.htm Kohjin - JR1EDELINRADDARNIL