Hi,
I have checked the both example VHF navaids in the current cycle/revision:
YYT is defined as High with 130NM
YQX is defined as Low with 125NM
For the YQX there is no official range/power available, therefore it´s defined as “unknown” and we set the Range to “low” with 125Nm as default. YYT is correct defined and also correct implemented (at least in our database).
According the FAA standard, the range is depending on the high (feet/FL), and till 45000 feet the distance is defined out to 130Nm. We set the “HIGH” VHF navaids to 130Nm.
I don´t know the max. cruising level of the DC6 but I guess it´s somewhere between 18000 - 45000 feet maximum. So the when the DC6 reachs a “High” VHF navaid, it should be received out to 130Nm, according the FAA standard.
From where are the 195Nm range? Are there any official source?
To the “Unknown” navaid-classifications:
What we can do is, that we set all “UNKNOWN” VHF navaids to default “High” with also 130Nm range but that for all “unknown” than.
Cheers,
Richard