Context: Compass-M1 transmits in 3 bands: E2, E5B, and E6. In each frequency band two coherent sub-signals have been detected with a phase shift of 90 degrees (in quadrature). These signal components are further referred to as "I" and "Q". The "I" components have shorter codes and are likely to be intended for the open service. The "Q" components have much longer codes, are more interference resistive, and are probably intended for the restricted service. IQ modulation has been the method in both wired and wireless digital modulation since morsetting carrier signal 100 years ago.

Question: What frequency bands does Compass-M1 transmit in?
Answer: E2, E5B, and E6

Question: What is the phase shift of the sub-signals detected in each frequency band used by  Compass-M1?
Answer: 90 degrees (in quadrature)

Question: What are the two sub-signals in each frequency band referred to as?
Answer: "I" and "Q"

Question: What is the intended purpose of the "I" component?
Answer: likely to be intended for the open service

Question: What is the intended purpose of the "Q" component?
Answer: probably intended for the restricted service

Question: In how many bands does Nerf-M1 transmit in?
Answer: Unanswerable

Question: What bands does Compass-M3 transmit in?
Answer: Unanswerable

Question: How many coherent sub-signals have been detected in each orbit?
Answer: Unanswerable

Question: Which components have much shorter codes and are most likely intended for the restricted service?
Answer: Unanswerable

Question: IQ modulation has been the only method in wired technology since how many years ago?
Answer: Unanswerable