Many thanks to Sam WB6RJH who presented the Tech Talk at the February 4, 2022, SLVARC club meeting. It was amazing to hear that one can communicate over almost half a million miles (and with a mostly non-reflective moon at the halfway mark) using only 500 watts of power, a directional Yagi antenna, and a low-noise amplifier. Sam’s talk was entertaining and informative.
If you’d like to review the slides, here’s a link to Sam’s presentation.
Also, the end of the talk Sam includes a set of resources:
- WSJT-X download: https://physics.princeton.edu/pulsar/k1jt/wsjtx.html
- EME with JT65: https://physics.princeton.edu/pulsar/K1JT/WA50_June05.pdf (especially note the photo at the end)
- EME-1 chat: https://www.chris.org/cgi-bin/jt65emeA
- Channel 5-eme on VHF-Chat group in Slack: vhf-chat.slack.com
- Great gear and info: http://www.w6pql.com/ especially on sequencing: http://www.w6pql.com/lna_sequencing_and_protection.htm
- Phase matching with NanoVNA: https://nuclearrambo.com/wordpress/make-your-own-phased-matchedcables-with-nanovna/
- ARRL, 70cm power limitation info: http://www.arrl.org/us270
Thank you!