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Old May 3rd 06, 06:35 PM posted to rec.aviation.ifr
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Default Why are some NDBs not displayed on Low Alt Enroute Charts?


"Dave Butler" wrote in message
news:1146665519.212250@sj-nntpcache-5...

PETIS NDB doesn't seem to have an enroute function, but PETIS reporting
point does. The two are very nearly, but not exactly colocated. Note that
PETIS reporting point is not defined from the NDB, but rather by 4
different methods using two VORs and 2 localizers.

Navaid identifier: SB
type: NDB
name: PETIS
city: SAN BERNADINO
state: CA
latitude: 34-03-23.285N
longitude: 117-21-58.014W
elevation: 0
magnetic variation: -14

Fix identifier: PETIS
state: CA
use: REPORTING POINT
latitude: 34-03-23.290N
longitude: 117-21-58.010W
VOR HDF, radial 317.77
VORTAC PDZ, radial 029.62, DME 11.63
ILS/DME I-ONT, radial E CRS, DME 12.86
ILS I-SBD, radial SW CRS


Very nearly, but not exactly collocated? Let's see, running those
coordinates through an online distance calculator shows the distance between
them to be 0.0000887267 NM. That's less than 6 1/2 inches. That's smaller
than any NDB antenna I've ever seen, I'd say they ARE exactly collocated.