[amsat-bb] Successful PSAT SSTV and Waterfall Drawing Experiment

[Robert MacHale]

That cool! Have you thought of making a YouTube video to show how that works.
73
Robert MacHale. KE6BLR FCC Licensed Radio Operator . http://www.aprsat.com/predict
. http://www.spaceCommunicator.club 
. Supporting Boy Scout Merit Badges in Radio, Robotics, and Space Exploration

Silly Joke: What did the little mountain say to the bigger mountain? Hi Cliff!


He who dares not offend cannot be honest. -- THOMAS PAINE
There is nothing noble in being superior to your fellow men. True nobility lies in being superior to your former self. -- ERNEST HEMINGWAY 

    On Saturday, November 28, 2020, 10:41:52 AM PST, Stephen DeVience via AMSAT-BB <amsat-bb at amsat.org> wrote:  
 
 Adding to Brian's explanation,

For the transmission, I was using a 5W RS-HFIQ radio attached to an RM
Italy amplifier. The radio is run by HDSDR, so I was able to pipe in audio
from both FLDIGI and MMSSTV simultaneously. I continuously sent a blank PSK
tone with FLDIGI and then sent various SSTV images from MMSSTV. I had
Orbitron controlling the HDSDR frequency to correct for uplink doppler, so
both the PSK and SSTV would stay on the correct frequency. It also took a
few tries to calibrate the uplink frequency, which was about 250 Hz lower
than the published value. This was important because SSTV demodulators want
the tones at the correct frequencies.

For spectrum writing, a sent a message with a second instance of FLDIGI
while the first instance was sending PSK.

-Stephen, N8URE
_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb