26A season KVN antenna status (for PI; ver.0512) - KYS joined!

2025-12-29

(26/05/19)

• KYS: Operation.
  [CTR installation (2025.09.01. ~ 2026.04.30.)],
  The 150/230 GHz receiver is expected to be ready by 2027.
  The KYS system (freq., LO, etc.) is almost the same as the KPC system.
  


• KUS: Operation.


• KTN: RF 22.8 - 26 GHz is not available.
  22L LO Doubler is broken (2026.05.12 - ongoing) <- Force to use LO of 31200 MHz instead of 34000 MHz in the field system (No need to revise the vex).
  [OCTAD PLO unlock problem; 2026.02.04, 2026.02.07, 2026.02.20.-23; OCTAD replaced at 23rd Feb.],
  [10-30 arcsec pointing scatter when elevation < 30 deg; 2025-09.01. - 2025.05.19]


• KPC: Operation.
  [Subreflector control problem; 2025.12.26.~31., 2026.02.03.~12.],
  The 150/230 GHz receiver is expected to be ready by the end of 2026.