NASA QSL Card

NASA asked radio operators to send very slow Morse (QRSS) on the 28Mhz band. The idea was to assist in the calibration of their onboard magnetic detection equipment, which was to be used to measure fields around the planet Jupiter. I used my little QRP Labs transmitter to contribute to the experiment. I seem to recall that the frequency that you used depended upon the last letter of your call sign (or similar). The scan below is the actual QSL card that I received from NASA.

Link to Youtube video - https://www.youtube.com/watch?v=hg9xY1zvrsw