National Security Airstrips in California's Desert
by Paul McGinnis
"National security" airstrips in California's desert
by Paul McGinnis (original article posted February 19, 1995)
Aviation Week (February 6, 1995) mentioned the existence of
Northrop's Tejon Ranch radar cross section range in California.
Because I've been out in that area several times to see the facility, I
have prepared some information telling people how to get there
with some other useful information.
The Tejon Ranch installation is located at the base of the
Tehachapi Mountains in a northwestern part of the Antelope
Valley. Some people have referred to this place as the "ant hill", but
I think they are confusing the Northrop installation with the Ant
Hill Oil Field airstrip on the other side of the Tehachapi
Mountains, east of Bakersfield.
To give you some idea of how far you will have to drive to get
there, it should be noted that the Northrop facility is approximately
105 miles from downtown Los Angeles, by road. (1 mile = 1.609
kilometers) I recommend using an offroad vehicle (4WD) or pickup
truck to get out to see the facility, because some of the roads are
quite rough. (I've navigated the dirt roads in the area in a 1988
Honda Civic, and I have to had to worry about damage to the car,
because of these dirt roads.) The roads near the facility can be quite
rocky or washed out in places. There are numerous dirt roads
crisscrossing the area, that are usually not marked, and some are
poorly maintained. It would be quite easy to get lost or have your
car break down up there. When the maps show unimproved dirt
roads in the area, they are not joking.
Using the FCC database, I have found that the facility is located at
34 degrees 55' 25" North latitude, 118 degrees 31' 48" West
longitude. The airstrip is not shown on the 7.5 minute U.S.
Geological Survey topographic map of the area, dated 1973 (Liebre
Twins Quadrangle, 34118-H5-TF-024). It also does not appear on
the 1986 Defense Mapping Agency aeronautical chart JOG NI 11-
4. However, it appears in DeLorme Mapping Company's 1990
Southern & Central California Atlas & Gazetteer collection of
topographic maps.
In this part of the desert, the dirt roads are given numbers. Although
the FCC records list the Northrop facility at 7000 230th Street
West, you can not get there by going down Avenue D, and going
north on 230th Street West. Because it is behind some low hills,
the facility can be difficult to see. I will provide directions to two
locations -- one location is just outside the Northrop gate (poor
viewing of the base, but an interesting excursion) and the other
location allows you to see the facility from perhaps 3 miles to the
east. The eastern viewing location also gives you quite a panoramic
view of the Antelope Valley, and surrounding mountains. You
should zero your trip counter on your vehicles odometer as you exit
Highway 14.
To get near the area, take Highway 14 north from Palmdale or south
from Mojave. Exit at Rosamond Blvd. (look for the sign that reads
Edwards AFB / Rosamond. (Edwards AFB is quite a ways to the
east.) Go west on Rosamond Blvd. At 2.3 miles west of Highway
14, you will see one of my dining recommendations in the area,
Villa Basque restaurant. Keep going west -- at 15.4 miles from
Hwy. 14, the paved road will make a sharp bend to the left and
become 170th Street West. Go right (north) on the dirt road
instead. At 16.9 miles from Hwy. 14 (1.5 miles north of Rosamond
Blvd.), you will see a sign that says Broken Arrow Road (with an
arrow pointing along a road that runs towards the northwest.)
Broken Arrow Road leads directly to the Northrop gate several
miles away (sorry, I didn't take mileage readings for that road.) If
you continue north on 170th Street West, you will end up at the
eastern viewing site. At the base of the Broken Arrow Road sign,
someone painted a blue object (a skull??) on a rock.
If you continue north, you will encounter a short stretch of very
rough road (a "washboard road" if you will...). As your trip counter
goes past 18.1 miles (2.7 miles from Rosamond Blvd.) you will
pass an antenna on a pole. I'm not sure if this is for a road sensor,
like on the Groom Lake road. At 19 miles (3.6 miles from
Rosamond Blvd.) the road will go west for 0.5 miles and then go
north again. The viewing site is 20.6 miles from Hwy. 14 (5.2 miles
from Rosamond Blvd.) Look towards the west (left) and there it is!!
You will see a hangar, radar antennas, a water tank, and several
smaller buildings on top of a small hill. It looks like the facility
probably got more use during the B-2 Stealth bomber's early
testing, a few years ago, than it does these days. (The canyon
behind the facility is Tylerhorse Canyon.) My estimate for the
runway length is 4000 feet (1231 meters).
If you follow Broken Arrow Road, it will eventually come to a gate,
like those used by cattle ranchers, marked with Private Property
signs. You should not go beyond the gate, to prevent getting
charged with trespassing. (I have seen local law enforcement in the
area.)
Apparently, to keep Northrop employees on the road, and prevent
them from getting lost, someone came up with the idea of using
signs with red arrows on them to point the way, and keep the
workers on the right road, so you can follow the red arrows also.
There is at least one creek along Broken Arrow Road that may have
water in it -- cross carefully so you don't get stuck in mud.
It is very unlikely that you will see anything classified up there.
Just enjoy the expedition, watch the desert hares and flocks of
birds, and relax outdoors, and you won't be disappointed. For those
with scanners, here are some Northrop frequencies: (I haven't heard
much activity, but I've been up there on weekends.)
462.35 MHz -- main channel for the facility (repeats 467.35 MHz)
123.35, 123.525, 314.6, 382.6 MHz -- Northrop aviation channels
(used at Air Force Plant 42 in Palmdale, Mojave airport Northrop
operation, and Edwards AFB Northrop operations also.)
158.28 MHz -- general use Northrop channel (also used at Edwards
AFB).
Another interesting place is the CIA's El Mirage Flight Test
Facility, used for testing their Gnat-750 and Predator UAVs
(Unmanned Aerial Vehicles, i.e., reconnaissance drones.) These
UAVs resemble large model airplanes. The El Mirage facility is
operated by the manufacturer of the UAVs, General Atomics Corp.
It has a 3700 foot (1138 meters) long runway in DMA aeronautical
chart JOG NI 11-5. To get there, exit Highway 14 at Avenue P in
Palmdale, and go east. You will go past Air Force Plant 42
(Lockheed's Skunk Works occupies the big hangar at the western
part of Plant 42) and the Blackbird (SR-71) Museum.
(Most of this trip is on paved roads). Go north on 40th Street East,
and then east on Avenue N. Go south on 90th Street East and make
a left turn (east) on Avenue O. You will pass Alpine Butte Wildlife
Sanctuary -- the buttes there are not too difficult to climb, and give
a fine view of Edwards AFB to the north, Plant 42 to the west, and
El Mirage and Lockheed's Helendale radar cross section to the
range. It would be a good spot to camp on and watch the aerial
activity above the Antelope Valley. Continue east on Avenue O
until you get to 240th Street East and go south (right) on 240th
Street East. Go south to Avenue P, and then east (left) on Avenue
P. You will go through the town of El Mirage. Look for a sign that
reads El Mirage Airport Road and make a left turn there (go north
on that road.)
At the end of the road, there will be an aircraft graveyard to the left
(west) and the El Mirage facility to the north. Offroad vehicle and
motorcycle enthusiasts use the lakebed of El Mirage Dry Lake to
the northeast. (Sorry, I don't have any radio frequencies for the El
Mirage facility.)
You could also continue on to Lockheed's radar cross section range
north of Helendale, California. In that report, I mentioned photos of
a radar cross section (RCS) testing pylon. I may have overestimated
the height of the pylon, if the pictures I saw are of scale models for
RCS, instead of actual aircraft. This is the facility that Ben Rich
mentions in his book, where they put a scale model of the Stealth
fighter on a pole, and there was no radar return until a crow landed
on the model.
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