INMARSAT-C and Aero update to my frequency list

[dlwtrunked]

The attached is an update to my INMARSAT-C and Aero list of frequencies seen in Eastern U.S. last updated in August. There are 3 additions in it.

 

[batdude]

any idea what the signals are spaced at 1.545.81 ... .84 ... .86 etc (left to right 6 spikes) (the humps are the far right are the 10500bps ACARS channels)

same goes for the signals just to the left of the 10500 channels - 1.546.000 and 1.545.990 (those are the 3rd/4th spikes from the right)

 

[dlwtrunked]

>any idea what the signals are spaced at 1.545.81 ... .84 ... .86 etc (left to right 6 spikes) (the humps are the far right are the 10500bps ACARS channels) same goes for the signals just to the left of the 10500 channels - 1.546.000 and 1.545.990 (those are the 3rd/4th spikes from the right)

I have not researched that range recently but at one time, I had identified the following transmissions of GPS correction data. I have never decoded and the signals are likely encrypted.

1545.8450 54W SBAS GNSS Serpentria Terrastar
1545.8650 99W SBAS GNSS Serpentria TerraStar
1545.9150 SBAS GNSS Hemisphere Atlas
1545.9675 99W SBAS GNSS John Deere Starfire
1545.9775 54W SBAS GNSS John Deere Starfire

 

[dlwtrunked]

Here is a larger updated post of SBAS GNSS (Satellite-based Augmentation Systems Global Navigation Satellite Services) downlinks from INMARSAT satellites. Although you will not be able to decode them, you will know what the frequency is.

1545.2850	54W	GNSS SBAS(2400)	RTXLA	Trimble
1545.8150	54W	GNSS SBAS(1200)	SASAT	Fugro SEASTAR
1545.8450	54W	GNSS SBAS(1200)		Veripos(TerraStar)
1545.8650	98W	GNSS SBAS(1200)		Veripos(TerraStar)
1545.8850	98W	GNSS SBAS(1200)		John Deere Starfire
1545.9150	98W	GNSS SBAS(600)		Hemisphere Atlas
1545.9375	98W	GNSS SBAS(1200)	AMSAT	Omnistar
1545.9875	98W	GNSS SBAS(600)		John Deere Starfire
1555.7885	98W	GNSS SBAS(1200)	CONNA	Omnistar
1555.8150	98W	GNSS SBAS(1200)	RTXME	Trimble
1555.8080	98W	GNSS SBAS(2400)	RTXNA	Trimble