Schedule of Glonass launches (2012-2020's)

[owais.usmani]

What is the difference between Glonass-K and Glonass-K2?

[Vahe231991]

What is the difference between Glonass-K and Glonass-K2?

The Glonass-K2 differs from the Glonass-K in having CDMA signals, and improved accuracy, but also in being 70% heavier and having 170% more power.

Link:
https://web.archive.org/web/20150716083821/http://www.unoosa.org/pdf/sap/2015/RussiaGNSS/Presentations/1.pdf

[zubenelgenubi]

Cross-post:

Testoedov from 4:48:28
https://vk.com/video830350191_456239021?list=ln-GBBG3WcXfSeZxplp7R

[Dec 12]

[zubenelgenubi]

Cross-post:

https://www.skyscrapercity.com/threads/Космические-технологии.1045319/page-1349#post-187048900
Google translate:

#26,965
Plans of Reshetnev, the leading satellite-building enterprise in Russia, to produce spacecraft in the near future.
The slide is taken from the stream of the plenary session of the international scientific and methodological conference “Modern education: integration of education, science, business and government”, held at the Tomsk State University of Control Systems and Radioelectronics.

[GWR64]

Glonass-M 721 (plane 2, launched Christmas 2007) has been under maintenance since July 30th.
It is transmitting again, but currently only the L1 signal.
We will see whether it can be put back into operation without L2.
If not, a replacement will have to be launched.
Also only the L1 signal is transmitted by 721's sister satellite 723 and the 733 (2009) in plane 1 and the 732 (2010) in plane 3.

[GWR64]

Glonass-M 721 (plane 2, launched Christmas 2007) has been under maintenance since July 30th.
It is transmitting again, but currently only the L1 signal.
We will see whether it can be put back into operation without L2.
If not, a replacement will have to be launched.
Also only the L1 signal is transmitted by 721's sister satellite 723 and the 733 (2009) in plane 1 and the 732 (2010) in plane 3.

The Glonass M 721 signal is healthy again. (source Galmon.eu and my phone)
but now only L1 signal, according to Galmon

[GWR64]

After Glonass-M 721 went back into operation without L2 during the week, Glonass-M 723 is now undergoing maintenance.
Since it has also only been sending L1 signals from 2016, there is no GNSS monitoring (Russian, DLR, others?).
So little can be said about its health. Normally, 2 replacement satellites would be necessary in plane 2.

https://glonass-iac.ru/en/sostavOG/

[GWR64]

Glonass M 723 is back in operation.
Whenever this satellite was to be replaced in the past, something went wrong or another satellite failed.
Slots 11 -> 12 -> 10
Proton launch failure ... Glonass-M 737 failure ...717 lost ...753 failure.

[AndrewM]

Not sure how accurate it is but GPS World is reporting the 1st K-2 launch in 2026.

Next year, Russia plans to launch Glonass K-2, the latest generation of GLONASS satellites.

[Jan 21]

[russianhalo117]

Not sure how accurate it is but GPS World is reporting the 1st K-2 launch in 2026.

Next year, Russia plans to launch Glonass K-2, the latest generation of GLONASS satellites.

[Jan 21]

The second and final Glonass-K2(-1) sat to be launched this year with the first Glonass-K2(-2) sat next year is my take.
Glonass-K family:
Glonass-K2(-1) (development sats with operational features)
https://space.skyrocket.de/doc_sdat/uragan-k2.htm
Glonass-K2(-2) (fully operational sats)
https://space.skyrocket.de/doc_sdat/uragan-k2-2.htm

[B. Hendrickx]

There is evidence from court documentation that Russia is purchasing Chinese-made electronic components for its Glonass satellites.

https://kad.arbitr.ru/Card/3a1b295d-96d2-4345-b6e5-26ee951f308e

This is a court case between NPTs Polyus, a manufacturer of satellite components, and a company named Intelelektron. The two parties signed a contract in November 2022 for the delivery of foreign-made electronic components. The name of the program is not mentioned, but the contract number given in the document makes it possible to determine that the purchases were made under an earlier contract concluded between Roscosmos and ISS Reshetnev in November 2015 for work on the Glonass program.

Payments under the NPTs Polyus-Intelektron contract were made in Chinese currency, leaving no doubt that Intelektron serves as an intermediary between NPTs Polyus and a Chinese supplier of electronic components. Further evidence for this comes from a vacancy placed online by Intelektron for a manager in charge of purchases of Chinese electronic components:

https://ru.joblum.com/job/menedzer-po-zakupkam-so-znaniem-kitajskogo-azyka/9985330

The fact that Russia is relying on Chinese-built parts for its satellites is not a big surprise. Reports about Russia’s intentions to do so first appeared as early as 2015, shortly after the West imposed its first sanctions on the country. However, this may be the first direct evidence that such purchases are actually taking place.

In an interview in 2020, the then director of ISS Reshetnev Nikolai Testoyedov expressed skepticism over the use of Chinese electronic components in the company’s satellites, including Glonass. He said that such purchases would only be made as a last resort, if it would not be possible to acquire Western or Russian-built components. He added that any parts  bought from Chinese suppliers would be subject to “very serious quality and reliability checks”.

The Chinese parts mentioned in the court document are likely intended for the next batch of Glonass-K2 satellites. Designated 14F170, these are significantly modified versions of the first two Glonass-K2 satellites (14F160). Plans were for the new  satellites to use far fewer Western-supplied electronic components than their predecessors (just 12 percent). A subsequent batch is expected to do away with Western-built components altogether.