SPKid Wrote:
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> Over the past few weeks I’ve noticed that the UP
> is installing some kind of new radio equipment
> along the mainline across the high desert here in
> CA on the Mojave sub. 30’ ft monopoles have been
> installed at the end of each siding with two
> stacked half-wave VHF dipoles. At the east end of
> Palmdale #2, there is one of the new VHF antennas
> plus a 900 Mhz Yagi antenna aimed toward Tehachapi
> (Oak Creek Pass), and some other kind of
> omni-direction antenna mounted below the Yagi,
> band unknown. I suspect the 900 Mhz Yagi is for
> the conveying track occupancy information to the
> dispatcher, and for controlling the switch and
> signals, secondary to the local circuits. Anyone
> know what the new VHF antennas are for, or the
> omni directional antenna mounted below the Yagi?
Hey SPKid,
To answer your quesiton, the Radio Antennas you are seeing as all a part of the unfunded mandate for Positive Train Control (PTC). Also, as info. "Palmdale #2" as you once knew it, no longer exists, it is now simply called Palmdale. Also the Timetable Direction on the Mojave Subdivision is North/South, so the location you refer to is called South Palmdale. Also, UP officially calls the sidings "Passes" or "the Pass", although some Dispatchers, but not many, will indeed call them sidings. Hope this is helpful.