AIM 1-1-9(f). All marker beacons, including fan markers, transmit on 75 Mhz.
The only difference is the audio modulation frequency which in turn
determines which light illuminates on the panel. Because of the relatively
high frequency, they are short range...thus the need for "locator (outer,
inner, middle) markers"...they enable the ADF equipped aircraft to locate
the marker beacon. It is easy to fly within reception range of an NDB and
miss the marker beacon entirely if you are not paying attention.

Some of the new whiz-bang ground traffic management systems involve voice
transmission on 75MHz because most planes have a marker beacon panel.
Sometime in the future, as you are taxiing in poor visibility, your marker
beacon receiver might say something like "On taxiway bravo, approaching
intersection bravo two."

Bob Gardner

"Andrew Sarangan" wrote in message
. 145...
A few questions came up in ground school that had me stumped. Any insight
is appreciated.

Why do some approaches say Radar required when all the fixes can be
identified using other equipment required for the approach? For example,
VOR-DME-A at 3G3.

When a holding pattern is published in lieu of a PT, my understanding of
the AIM (5-4-9 (4)) is that you only have to perform the entry, and are
not
required to do any laps around the pattern. What if the hold requires a
direct entry? In that case it seems that you can effectively skip the
holdind pattern, which does not make sense to me because a PT (or hold in
lieu of PT) is a required maneuver. Take a look at SDF10 @ DWU.

Why does the hold in lieu of a PT always say "1 min". Isn't a hold always
1
min? Why is this mentioned only for this type of hold, and not mentioned
for all other holds?

What exactly is a Fan Marker? See SDF10 @ DWU. How is this different from
an OM? The fan marker seems to have its own identifier code.


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