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Global TSCM Group, Inc.
12 W 32
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St, Suite 604, New York, NY 10001, USA
Tel.: +1 212 967 4030 +1 646 233 0383 Fax: +1 212 967 7560
THE STEALTH
The Confidential Catch
the potential meter through Calibration Hole with a small screw driver. The 0 degree LED should
indicate that the signal is directly ahead of the vehicle (N on antenna control unit).
As a double check, your friend can transmit while circling the vehicle at approximately the same
distance and the display should follow him/her. The DF will retain this calibration even after power
is turned off.
An alternate method of calibrating the unit is to drive directly towards a known transmitter site,
across an open area. This will give you the best calibration but may be difficult or impossible in
urban areas. The simpler method should be quite adequate.
You may develop other methodologies that work better in your situation and by all means use them.
Q & A
I saw a blue LED ( 0 degree ), sometimes unstable red dots, but not beaming the right direction.
Sometimes there was a yellow (90,180, 270 degree) LED.
a. Unstable LED means that KN2C-2020 does not receive the right signal. When KN2C-
2020 tunes with the right signal, it outputs clear 430 Hz audio signal which will indicates
stable LED.
b. Adjust the volume of your FM receiver – It may be too low or high
c. The transmitter locates to close to DDF antennas
d. Check is there any objects to reflect RF signal such as tall
buildings or RF interference
e. The one of big reason of unstable lights is the interference with street objects such as
buildings, cars, and trees. The best way to get the accurate bearing in stop your vehicle at
the place to avoid or minimize the interference to draw a bearing and move to another
place until you get the satisfied results.
The directions of LED look opposite or different angles but seems stable from the actual direction
of the transmitter.
a. It requires calibration to adjust the angle to the correct direction.
b. Check the DF antennas’ directions.
NAVI 2020 software looks not to receive GPS signal (location information).
a. Check whether the external GPS is receiving (blinking red light) and the cable between
GPS and the main Unit or the main unit and PC.
b. Change COM port.