Astra 3B (23.5°E), 2016-11-15
SkyLink: Doku CS has left 12109.50MHz, pol.H (DVB-S2 SID:5061 PID:3011[MPEG-4]/3021 Czech), it is no longer transmitted by satellite in Europe.

 Astra 3B (23.5°E), 2015-11-03
Doku CS has left 12207.00MHz, pol.V (DVB-S2 SID:713 PID:7131[MPEG-4]/7132 Czech)

 Astra 3B (23.5°E), 2015-10-16
New frequency for Doku CS: 12109.50MHz, pol.H (DVB-S2 SR:27500 FEC:3/4 SID:5061 PID:3011[MPEG-4]/3021 Czech- Cryptoworks & Irdeto 2).

 Astra 3B (23.5°E), 2015-01-13
SkyLink: Doku CS has left 12109.50MHz, pol.H (DVB-S2 SID:5046 PID:4006[MPEG-4]/4166 Czech)

 Astra 3B (23.5°E), 2015-01-06
New frequency for Doku CS: 12207.00MHz, pol.V (DVB-S2 SR:27500 FEC:5/6 SID:713 PID:7131[MPEG-4]/7132 Czech- Cryptoworks & Irdeto 2).

 Astra 3B (23.5°E), 2010-09-30
SkyLink: New FEC for Doku CS on 12109.00MHz, pol.H: FEC:3/4 ( SR:27500 SID:5046 PID:4006[MPEG-4]/4166 Czech - Cryptoworks & Irdeto 2).

 Astra 3B (23.5°E), 2010-06-17
Doku CS switched to Astra 3B satellite at 12109.00MHz, pol.H (DVB-S2 , 12109.00MHz, pol.H SR:27500 FEC:9/10 PID:4006[MPEG-4]/4166 Czech).

 Astra 1G (31.5°E), 2010-05-04
SkyLink: Doku CS is now encrypted in Cryptoworks & Irdeto 2 (12109.00MHz, pol.H SR:27500 FEC:9/10 SID:5046 PID:4006[MPEG-4]/4166 Czech).
SkyLink: Doku CS (Czech republic) is now transmitted Free To Air (12109.00MHz, pol.H SR:27500 FEC:9/10 SID:5046 PID:4006[MPEG-4]/4166 Czech).

 Astra 1G (31.5°E), 2010-01-15
SkyLink: A new channel has started in DVB-S2 Cryptoworks: Doku CS (Czech republic) on 12109.00MHz, pol.H SR:27500 FEC:9/10 SID:5046 PID:4006[MPEG-4]/4166 Czech.