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HF Mystery Signals / 7058 +/- kHz WB digital or jammer 2134Z 072922
« on: July 30, 2022, 1604 UTC »
Tuned across this monster buzzsaw last night after seeing it on my IC-7300 waterfall down the band from the FT8 watering hole.
It was S9+ here in West Central FL. It looked to be about 3 kHz wide, composed of many individual carriers a few tens of Hz apart. This can be seen on a baseband audio waterfall such as in the WSJT-X monitor. Possibly a digi-fone mode?
First thought it was on 7058, a whole kHz raster, but careful tuning made it seem perhaps more centered in passband on USB Data dial setting of 7058.5 kHz.
First audio clip starts with a 7058 setting, then I tuned around a bit.
https://voca.ro/1nGgscFjPzsi
Second audio clip is from dial set only 7058.5 kHz USB.
https://voca.ro/1bt1vMC9q6eq
It was S9+ here in West Central FL. It looked to be about 3 kHz wide, composed of many individual carriers a few tens of Hz apart. This can be seen on a baseband audio waterfall such as in the WSJT-X monitor. Possibly a digi-fone mode?
First thought it was on 7058, a whole kHz raster, but careful tuning made it seem perhaps more centered in passband on USB Data dial setting of 7058.5 kHz.
First audio clip starts with a 7058 setting, then I tuned around a bit.
https://voca.ro/1nGgscFjPzsi
Second audio clip is from dial set only 7058.5 kHz USB.
https://voca.ro/1bt1vMC9q6eq
