OSCOR OSC 5000 - Figure 67 Unintentional Radiator Table

SECTION 6: CONDUCTING A SWEEP
REI OSC-5000E 100
NOTE: There are many intentional radiators such as: cordless phones, cellular phones,
baby monitors, any kind of advertised wireless systems (intercoms, walkie-talkies, remote
control devices, etc.). It is important to become familiar with the normal transmitters in
your environment to increase sweep efficiency.
Radiator Expected Unintentional Signal Probability
Fluorescent lights Low frequency noise in the AC VLF, RF Loop and
possibly in the WhipLo.
Moderate
Computer monitors Multiple strong harmonic signals appearing on the
RF Loop antenna input and possibly in the WhipLo.
High
Computers Potential harmonic signal appearing on the RF Loop
antenna, WhipLo, and even the Whip High antenna.
These signals are typically due to the various clock
speeds in the computer system and may have a
digital sound.
Moderate
Radio Tuners,
Stereos
Low strength signals in the same frequency band as
the radio. (FM-WhipHi, AM-WhipLo), and may
radiate at lower frequencies. Since radios contain a
tuned oscillator that is used to demodulate the
received signal, this internal oscillator may re-radiate
a similar signal at 455 kHz or 10.7 MHz above or
below the normal frequency.
Moderate
LED displays Low frequency noise on the RF Loop from the
internal display system pulsing the LED.
Low
Fluorescent or Gas
Displays
Low frequency noise in the RF Loop and possibly in
the WhipLo.
Low
Wired Digital
Phones
Very weak signals in the RF Loop and WhipLo.
Digital phones may have a control system that
operates at several kilohertz or megahertz.
Low
FIGURE 67 UNINTENTIONAL RADIATOR TABLE
WARNING:
As previously stated in this manual, it is very important to understand that the
OSCOR automatic mode is NOT guaranteed to detect and log all types of transmitters. Further,
the OSCOR automatic mode will not log transmitters such as Spread Spectrum, Burst, and
Frequency hoppers. For detection and location of these types of threats it is important to use the
OSCOR in the manual mode, for more information see page 83 SECTION 5: DETECTING
SOPHISTICATED TRANSMITTERS. Furthermore, it is important to understand that conducting a
sweep is a layered approach. If you miss something with the OSCOR automatic mode, other
countermeasures (properly using the OSCOR manual modes, a thorough physical search, and or
using a Non-Linear Junction Detector such as the ORION) will increase your level of technical
security.