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The Amateur Radio payload on the lunar-orbiting 4M-LXS spacecraft will carry up to 2500, 13-character digital messages into space for retransmission via JT65B mode on 145.990 MHz. But wannabes will have to act fast. The message collection site will close Wednesday, September 17 at 12:00 Central European Time (1100 UTC) the 4M website announced today. China recently announced plans to launch the…

American Radio Relay League | Ham Radio Association and Resources