The default Flight Simulator ADF tunes in 1.0 kHz increments, i.e., 305,
306, 307 etc., and the default Com Radio tunes in 50 kHz increments, i.e.,
124.00, 124.05, 124.10, 124.15 ...
There are occasions, though, when one needs to tune to an NDB at a 0.5 kHz increment, like to 337.5 or 296.5 kHz. Similarly, the need may arise to tune the Com Radio to 25 kHz increments, rather than 50 kHz increments, like to 126.025, or 126.075, or 132.025, etc.
To change the radio settings go to:
Options/Settings/Instrument ... FS-2000
Options/Preferences/Instrument ... FS-98
and a panel will appear giving one the option to select a Com frequency increment of either 25 kHz or 50 kHz, or an ADF frequency increment of 1.0 kHz or 0.1 kHz.
NOTE: The Com Radios display only 5 digits, so one will not see a frequency display of 126.025, or 126.075, for example, since that requires six digits. Thus 126.025 will display as 126.03, and 126.075 will display as 126.07. Knowing this, there will be no ambiguity on which Com frequency is tuned.
Here is how the Com Radio will look for a range of frequencies, when set for 25 kHz increments:
For the ADF, the situation is either very simple, or not simple. When FS
is set up for 1 kHz frequency increments, the ADF tunes from 200 kHz up to
999 kHz. Any digital ADF will properly indicate these frequencies.
The confusion begins when the ADF increment is changed to 0.1 kHz. Now the ADF tunes the wider range of 290.0 kHz up to 1699.9 kHz. If the indicator is a five-digit display, there is no problem. Consider, for example, two possible frequency settings of your ADF Receiver: 375.5 kHz and 1375.5 kHz. With a five digit ADF frequency display, you would see:
No confusion here, with the five-digit display ... we can see whether the ADF is tuned to 375.5 or to 1375.5
Now, consider the 4-digit display of the ADF on the R4D Panel:
Again, no confusion on whether the ADF is tuned to 375 or 1375 ... the
digital readout removes that doubt.
But, is the ADF tuned to 375.5? .. or 375.3, in which case we would not receive the NDB. With only a four-digit dispaly, you can't be certain without a further check.
Here are several methods to verify or accurately set the ADF frequency when five digits are needed and the radio displays only four digits:
There is a very simple way to determine the exact frequency of your ADF receiver. Go to FSNavigator, and the left-hand panel there shows the frequency of all of the receivers on your panel (and also the frequency of a receiver that may not be on your panel, like Nav 2, which may have been tuned with the PH-DDZ panel.)
By the way, also use FSNavigator to verify that you have set the VOR OBS to the exact radial you desire ... that information appears farther down in the same left-hand panel of FSNavigator. One click of the OBS knob moves the dial one degree. Pretty critical when running a VOR approach.
Here are three methods to accurately set your radio frequencies, regardless of the panel display:
So, there you are. No more ambiguity of Radio Frequencies.