2019 Fall Sun Fade

img1Akron, OH – September 25, 2019

Twice a year, Skycasters likes to take a little time to post on our blog and news section about sun fade, a condition which affects all satellite communications. In late winter and again in mid-fall, the sun lines up with the Earth and interrupts transmissions to communications satellites.

Our parent star outputs a tremendous amount of noise in the radio frequency end of the spectrum, the same signals used for satellite communications. Since the solar energy is many times stronger than our ground-based signals, all communication with orbiting satellites is briefly interrupted. This translates to a very temporary, but planned, outage.

It might not be immediately obvious, but there will be several outages for every customer. Any time the sun lines up directly with your satellite dish and the transmitting spacecraft or our teleport and the satellite, there will be an outage, typically less than seven minutes on the strongest day of solar interference. The amount of time the sun fade affects our networks will gradually increase in the few days prior to the longest outage and will slowly decrease for several days after.

Since Skycasters’ headquarters and teleport is in Akron, Ohio, we can predict to the minute when outages will occur and roughly how long they will last for each satellite. Brief service outages will also occur for each individual customer and will vary depending on latitude. Each satellite operator provides a map with latitudes, longitudes, and times so that you can come up with an estimate of when you can expect to see an outage.

Below, you’ll see a table detailing the dates and times we expect to see sun fade here in Akron and how long we expect the outage to last. Further down, you can find links to see when you can expect sun fade to affect the internet connection where you’re doing business.

Eutelsat E113WA Sun Fade Times
DATE Day Start Stop
GMT AKR Local Fade Time GMT Max Time
08/10/2019 Saturday 19:33 19:37 0:04 19:35
09/10/2019 Tuesday 19:32 19:37 0:05 19:34


Intelsat G-28 Sun Fade Times:
AKN-02E2 ANT2 USA AKRON 6.3 10/7/2019 17:40 15 271 Fall Galaxy 28
AKN-02E2 ANT2 USA AKRON 6.3 10/8/2019 17:40 15 271 Fall Galaxy 28
AKN-02E2 ANT2 USA AKRON 6.3 10/9/2019 17:40 15 271 Fall Galaxy 28
AKN-02E2 ANT2 USA AKRON 6.3 10/10/2019 17:40 15 271 Fall Galaxy 28
AKN-02E2 ANT2 USA AKRON 6.3 10/11/2019 17:40 10 271 Fall Galaxy 28


Telstar T-11N Satellite Specifications:
All times are UTC
Location Akron, OH 44306 USA
Satellite Telstar 11N
Satellite Longitude (E) -37.55
Station Longitude (E) -81.48
Station Latitude (N) 41.04
Carrier Frequency Band Ku (12GHz)
Antenna Size (m) 6.3
System Temperature (K) 158
Solar Flux Index at 2800 MHz (SFU) 105.1 (on 10/09/2019)


Telstar T-11N Sun Fade Times:
Date (Month/Day/Year) Peak Transit (Hour:Min:Sec) Transit Start (Hour:Min:Sec) Transit End (Hour:Min:Sec) Transit Duration (Min) Max C/N Degrad. Min (dB)
10/7/2019 13:58:22 13:55:51 14:00:54 5 2.69
10/8/2019 13:58:05 13:54:16 14:01:55 7.7 14.37
10/9/2019 13:57:48 13:53:36 14:02:02 8.4 16.25
10/10/2019 13:57:32 13:54:42 14:00:23 5.7 3.34

Use the following links to determine when you can expect sun fade for your satellite in your area:

Satellite Sun Calculations

SatCom Resources Sun Calculator


If internet connectivity is critical to your business, contact us today to learn more about our backup connections for business continuity. One of our dedicated team members will be happy to explain our plans and get you started today.