how about the 2m ssb stand-by frequency - is it 144.140mhz ?
my qth is having 2 x 14 elements yagi (20 m above the ground) and capable of 350w and transceiver is icom ic-970h with tokyo hy-power of hl-350v
my qth location is hong kong that is over 2000km away from jiangsu and shanghai area