W0RW is on 473 kHz sending CW today, 28 Sept. 2019, 1000 MDT. Looking for Ground Wave Q's. Just got my antenna up higher, now at 40 feet. If you have a rig give me a call or send me a report. QRT at 1200 MDT. If you want more 630 Meters info go to: <http://njdtechnologies.net/>. Or see CQ magazine, Feb. 2017. 73 Paul w0rw Colorado