Post by melb00m on Apr 10th, 2008 at 1:44pm
Under normal operations, the 757 tunes the radios automatically to close VOR stations to keep the IRS aligned automatically using DME updating.
You have two options to manually set a frequency:
1.) Turn off auto-tuning by klicking the marked-button from following screenshot (should be on the main panel, click to enlarge).
2.) The better option: Open the FMC, switch to the RAD/NAV page, enter the frequency or navaid identifier into the scratchpad and push left or right LSK1 for Nav1 / Nav2.
Btw: Both ways should be described in the manual... At least the second way can be found in Manual 5.
You have two options to manually set a frequency:
1.) Turn off auto-tuning by klicking the marked-button from following screenshot (should be on the main panel, click to enlarge).
2.) The better option: Open the FMC, switch to the RAD/NAV page, enter the frequency or navaid identifier into the scratchpad and push left or right LSK1 for Nav1 / Nav2.
Btw: Both ways should be described in the manual... At least the second way can be found in Manual 5.