Radar Detector manufacturers counted this threat by in tern,
"listening" for the VG-2 and shutting down the RD if the VG-2 was detected.
This cat and mouse game continued, when RD manufacturers shifted the
local oscillator frequency of their detectors to a frequency
outside the range of the VG-2. These detectors were known as VG-2 immune.
Stealth Micro Systems (SMS) of
Australia developed the Spectre RDD and later followed with upgrades, the
Spectre 2 and Spectre 3. The Spectre II and III were so successful, that
many law enforcement agencies around the world submitted large orders for these
devices.
SMS named their local version of the Spectre RDD the Stalcar, and
as per the international model, released the Stalcar 2 and 3. The use of
radar detectors is illegal in most Eastern States of Australia, so the local
sales of the Stalcar were well received.
Only a handful of US states ban the use of radar detectors,
although RD's are illegal in 18 wheelers nation wide. The use of Spectre
RDD's in these areas had the RD manufacturers beat....until Beltronics released
the STi.
The Bel STi is the only RD on the market to be immune to all
known brands of Radar Detector Detectors. Instead of shifting the lo
frequency leak, as was past measures to defeat the Spectre, the STi completely
conceals all lo emissions. This has rendered the Spectre / Stalcar useless
against this type of detector.
It should be noted that many Radar Detectors cannot be detected
by the old VG-2 radar detector detector (RDD), which is often referred to as
"shadow technology". This is useless against modern RDDs as the VG-2 is hardly
used anymore, and is replaced by the Spectre / Stalcar.
