This information is from 

Callsign / File Num Status Service Station Class Licensee Name Xmtr City Xmtr State Frequency
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 451.3875
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 456.3875
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 462.2125
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 462.2625
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 462.3125
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 462.3625
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 462.4375
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 467.2125
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 467.2625
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 467.3125
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 467.3625
WPSS424 Active IG Mobile Lockheed Martin Corporation SPRINGDALE NV 467.4375

Frequencies in yellow are repeater outputs. Service code IG = Industrial/Business Pool, Conventional 

Springdale is listed as a ghost town according to http://nvghosttowns.topcities.com/nye/sprdale.htm Note that the radio site is not in Springdale, but near the Pahute Mesa as shown in the next section. Springdale is located along route 95, north of Beatty, at N37 01 47.8 W116 45 18.2.

Site Information

Additional Site # Lat Deg Lat Min
FREQUENCY 1 37 6
Lat Sec Lat Dir Long Deg Long Min
7.8 N 116 18
Long Sec Long Dir Tower ID Transmitter Street
48.1 W    
Transmitter City Transmitter County Transmitter State Elev
SPRINGDALE NYE NV  
Hgt Structure Radius Op Status Area Op Lat Lon
  100   P
Area Op Tx Ant Type of Structure
   

This location is near the Pahute Mesa runway on the Nevada Test Site.

From the FCC database of "experimental" frequencies:

Callsign Service Station Class Licensee Xmtr City Xmtr State Frequency Frequency Type
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2316.5 M
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2321.5 M
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2333.5 M
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2341.5 M
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2368.5 M
KA2XAK XC MO LOCKHEED MARTIN CORP. NELLIS AFB NV 2380.5 M
 

Service XC is EXPERIMENTAL CONTRACT (DEV).

Site Results [EXPERIMENTAL DATABASE]
Additional Antenna ID Location Type Street Address
FREQUENCY 11769 M  
City County State Mobile Area
ORLANDO   FL Orlando, FL
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      28
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
26 48 N 81
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
27 8 W  
RECORD NUMBER 2
Additional Antenna ID Location Type Street Address
FREQUENCY 11770 M  
City County State Mobile Area
EGLIN AFB   FL Eglin AFB, FL
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      30
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
29 0 N 86
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
32 0 W  
RECORD NUMBER 3
Additional Antenna ID Location Type Street Address
FREQUENCY 11771 M  
City County State Mobile Area
EDWARDS AFB   CA Edwards AFB, CA
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      34
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
54 0 N 117
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
52 0 W  
RECORD NUMBER 4
Additional Antenna ID Location Type Street Address
FREQUENCY 11772 M  
City County State Mobile Area
CHINA LAKE   CA China Lake, CA
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      35
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
40 0 N 117
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
41 0 W  
RECORD NUMBER 5
Additional Antenna ID Location Type Street Address
FREQUENCY 11773 M  
City County State Mobile Area
UTTR   UT UTTR, UT
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      40
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
12 0 N 112
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
54 20 W  
RECORD NUMBER 6
Additional Antenna ID Location Type Street Address
FREQUENCY 11774 M  
City County State Mobile Area
NELLIS AFB   NV Nellis AFB, NV
Datum Operation Radius Fixed Latitude Deg Fixed Latitude Min
  320    
Fixed Latitude Sec Fixed Latitude Dir Fixed Longitude Deg Fixed Longitude Min
       
Fixed Longitude Sec Fixed Longitude Dir Fixed Units Mobile Latitude Deg
      37
Mobile Latitude Min Mobile Latitude Sec Mobile Latitude Dir Mobile Longitude Deg
0 0 N 116
Mobile Longitude Min Mobile Longitude Sec Mobile Longitude Dir Mobile Units
0 0 W  

Lockheed Telemetry at the Tonopah Test Range

Callsign: WQGU581
Radio Service: AF (Aeronautical and Fixed)
Latitude:      37 46 46 N
Longitude: 116 46 54 W
This is about 0.7 miles west from the south end of the runway.
Emission Code: 12M00F9D [12 MHz bandwidth, FM, multi-channel, data]
Power: 20 watts
Frequencies: 1441.5MHz, 1453.5MHz, 1465.5MHz, 1477.5MHz, 1489.5MHz, 1501.5MHz
Date First Used: 4/19/2007
Control Points: 1011 Lockheed Way, Building 601, Palmdale, CA; phone 661-572-3019

Note that the bandwidth of this signal vastly exceeds that of any conventional radio. It clearly could not be demodulated. It might be caught in a band scan. Building 601 (to the best of my knowledge), is the large hangar you see from the Sierra Highway in Palmdale. On google earth, go to   34°36'48.29"N   118° 7'6.71"W.