KN2C 2020T User Manual v1_5
Contents
1. The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc THE STEALTH 12 W 32 4 St Suite 604 New York NY 10001 USA emule http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 ee THES TEALWLTIA KN2C2020T GPS E Global T Vi Group The KN2C 2020T DF is an economical but very sophisticated Doppler DF kit with a GPS input and RS232 output to provide the ability to indicate its location and draw bearing automatically or manually on Google Earth map to find the RF transmitter more conveniently KN2C 2020T kit Includes eight assembled tested PC boards MAIN board and 2 Sub boards in the main unit and five antenna boards in the antenna modules one for each of four antennas and one for auxiliary antenna Completion work is required by the user to finish the DF main unit Guidelines for the completion work are provided The user must provide a NB FM receiver antennas and a PC for DF bearing Windows OS DDF2020 display program further requires a GPS receiver with NMEA 4800 baud output VHF Doppler DF 5 Antennas primarily for mobile DF 100 1000 MHz Economy high performance DSP micro processor design software intensive Sold as a kit Main unit antenna unit and associated cables Accepts NMEA RS232 GPS input data 4800 baud GPRMC GPGGA and or GPVTG2. Global TSCM Group Ni a Te 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 DDF2020 GPS 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 amp A 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 Adjust the volume of your FM receiver It may be too low or high The transmitter locates to close to DDF antennas Check is there any objects to reflect RF signal such as tall buildings or RF interference The one of big reason of unstable lights is the interference with street objects such as buildings cars and trees
3. Kelly N6QAB went a step further and marked the top of his vehicle with whip locations Preparing Calibration 1 2 Connect the RF output from the Antenna Control unit to the VHF FM receiver s antenna connector Connect the Antenna Control cable between the Antenna Control unit and KN2C 2020 s Main unit Connect the FM receiver s external speaker audio to the audio input jack on KN2C 2020 main unit Turn on the power to your DF unit Turn on the receiver and open the squelch on your receiver then tune it to the frequency desired You should hear a 430 Hz tone imposed on any audio present depending on the Antenna Speed selection at startup Calibration The easiest way to calibrate is to drive your vehicle to an open area and have a friend position himself herself at least 100 150 feet 80 40 m away with low power and directly ahead of the vehicle while transmitting an unmodulated carrier lf your friend is using an HT ask him her hold it vertical at approximately the height of the vehicle antennas If the DDF already turned on check which direction the direction LED shows and adjust The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc 12 W 32 4 St Suite 604 New York NY 10001 USA http globaltscmgroup usa com sales globaltscmgroup usa com Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 THE STEALTH The Confidential Catch
4. Multi Display The MultiDisplay of KN2C 2020T provides a combined numeric and pelorus display in the main board A high quality display with 2 microcomputers and an RS232 input that accepts Agrello DF messages The pelorus display employs 36 high density LEDs with 4 yellow LEDs at cardinal headings Option straps allow hold blink of last valid DF data or pelorus orbit when data goes invalid All LEDs briefly flash 2 second intervals for enhanced nighttime viewing e 3 digit numeric readout 0 36 inch characters e 36 LED pelorus display 4 yellow cardinal LEDS e Selectable HOLD ORBIT display for old DF data e Power on self test RS232 Output The RS232 output message is transmitted about 10 times per second and complies with the very popular Agrello DF message format as shown below Agrello DF message format BBB Q lt cr gt Where message start character BBB signal bearing degrees 000 359 Q signal quality 0 9 fixed 7 in this design lt cr gt carriage return The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc E 12 W 32 St Suite 604 New York NY 10001 USA THE STEALTH http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Global TSCM Group New Tork Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 The RS232 message is transmitted at 4800 baud with an 8N2 b
5. sentences for Plotting map on Windows PC display e RS232 output for Windows PCs Agrello format e Uses modified Joe Moell Wideband Antenna design e 9 28 VDC operation e Optional GPS Receiver available Specifications Revr Freq Determined by user provided FM receiver Range 100 to 1000 MHz Antenna Four elements for DF and one auxiliary element for improving sensitivity and accuracy Wave vertical with assembled Ant Scan Scan rate 430 Hz rotation clockwise viewed from above antenna Ant Switch Modified Joe Moell Wideband Doppler DF antenna design Employs Agilent HSMP3893 SMT PIN diodes SMT strip line circuit design SMA output connector Audio Input FM receiver speaker audio 1 0K ohm load 25db dynamic range GPS Input 4800 baud RS232 input NMEA GPRMC GPGGA and or GPVTG messages The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc E gt 12 W 32 St Suite 604 New York NY 10001 USA THE STEALTH http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Global Group Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 Output 1 RS232 Agrello DF message 4800 baud 8N2 15 messages second Ant Outputs Four discrete active HIGH outputs for KN2C 2020 Antenna one per antenna DC Power 9 28 VDC Voice Filter Switched capacitor filter SCF 4 sections Bandwidth 0 2 Hz
6. 32 la Receiver of RS232 logic level e wc Noconnection The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc THE STEALTH 12 W 32 St Suite 604 New York NY 10001 USA areal http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 Global TSCM Group MN a Te The Antenna Unit 1 Wideband Principles a The KN2C 2020T antenna described here should be suitable for use across multiple octaves of frequency range The KN2C 2020T antenna unit is intended for use across the range of 100 MHz to 1 GHz but operation outside these limits can reasonably be expected and the exact limits can only be determined experimentally RF sensitivity of the antenna is another matter Sensitivity will vary significantly with large frequency changes but this can be compensated to some degree by using antenna elements of different length for specific bands The information provided below is intended for people who anticipate using the KN2C 2020T across a multi octave frequency range b The upper frequency limit of operation for a Doppler antenna is fairly well defined and is determined by the separation distance between adjacent antenna elements expressed in wavelengths Distances exceeding 1 3 wavelength will begin to degrade the RF sensitivity of the antenna and distance of wavelength will
7. KN2C 2020T USER MANUAL Rev 1 5 Global TSCM Group Inc eos Pr THE STEALTH E 12 W 32 St Suite 604 New York NY 10001 USA y eer Group Mttp globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 Table of Contents A 3 SPecifiCatlONS ooooccccccnccocncconnoconnnoconnnnncnnonnnonnnnonnrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnncnono 3 MUI ISON conan opi 4 Contents in the package ooccooccccocncoccnnccncnnonanocnancnnanonnannnnnnonunnnnnanos 5 Prepare TO USO ne nee E E ee 6 Assemble Main Unit ooccooccccccocnconoccnconncononononnncononnnonnncnnonnnnnnononennnnanenanennnss 6 Connect OAG aroma eee eee en eee eee eee 7 After Assembly the Kilt coocoocoonconconconconoonoonoonoonoonoonnonnnnonnonnonncononnonnonnnnnonns 7 Connection DiagraM cccoccncoccnccocnncccnnononnnonnnonnnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnninnnnnnss 8 TRE ARCE UNI ees motorola r toro epecaeeaeateeee escaneado 9 Wideband Principles occooccocnconnconcccncocnconconncoconononnnnnnonanonnnnoronannnnonaninannnnnss 9 TRES PANIC AGG secrets eset cs ecceenaec icine eps cene secdasueeaescesacecadeus EE EEEE 9 FN ROC nn E E E EE 10 AMENNA UNI oar en E E E ee E E E E E 10 DF Gamba ON carlo 11 Preparing CalibratiON cccoccccoccncconnccccnnconnnononononcnononnononnnonnnnnonnnonnnnnnnnnnnnns 11 o oe PP EE 11 A e o E 12
8. 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 0200 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 The appearance and specifications can be changed without ant notification for the purpose of upgrade product rr Global TSCM Group Inc 12 W 32 St Suite 604 New York NY 10001 USA Giobarr cm Group Ottp globaltscmgroup usa com sales globaltscmgroup usa com Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 THE STEALTH The Confidential Catch LIMITED WARRANTY Global TSCM Group Inc makes every effort to assure that its products meet high quality and durability standards and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 1 year from the date of purchase This warranty does not apply to damage due to directly or indirectly to misuse abuse negligence or accidents repairs or alterat
9. altscmgroup usa com New York Tel 1 212 967 4030 1 646 233 0383 Fax 1212 967 7560 2 Connect Cables a DC 9 28V Main Power Cigar Jack cable or DC adaptor b PHONE Connect earphone or external speaker if necessary c AUDIO IN Connect audio output from a receiver with 3 5 mm Audio Cable provided d GPS Connect the optional GPS receiver 4800 BPS e RS 232 Connect a PC for plotting on Google Earth map f TO Control Connect the main antenna module 3 After Assembly the kit The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc age P THE STEALTH 12 W 32 St Suite 604 New York NY 10001 USA h fid ial h E E raea Cra http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catc New York Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 4 KN2C 2020T Connection Diagram MAIN FM RECEIVER ANT MODULE KN2C 2020T CONNECTION ANT N ANT E ANT 5 Windows PC ANT W MAIN UNIT DDF2020T When you use RS232 Serial To USB Convertor please install the right driver comes with it Antenna N should be placed in frontward of vehicle to indicate 0 degree of DF Display When DDF2020 tunes with the right RF signal it outputs clear 430 Hz audio signal which will indicates stable LED GPS631 No connection a RS232 a of RS232 logic level 3 VDD Power supply of 5V input aeo PGroma iE RX RS2
10. d signal The frequency of the Doppler tone is about 430 Hz and it passes easily through the audio circuits of the FM receiver just like any other audio tone The GPS RS232 Input Port The GPS RS232 input accepts 4800 baud NMEA data scans the data for the GPRMC GPGGA and GPVTG sentences very common and relays these sentences if found through the KN2C 2020T RS232 output port to the display computer GPS Data is NOT fed to the IR port To increase the amount of DF data provided every 3rd GPS message is relayed instead of each message Furthermore only the GPRMC message is relayed if found Otherwise the GPGGA and GPVTG messages are relayed if found The GPS itself must generally be configured to transmit NMEA data because a variety of data formats are available NMEA is the most common format In some cases it will be necessary to buy a special cable from the manufacturer to get the data The GPRMC GPGGA and GPVTG sentences are the most common NMEA sentences provided but if you wish to confirm their presence in your GPS output you can examine the data stream with HyperTerminal which is provided free with every Windows operating system in the PROGRAMS ACCESSORIES menu If you do not wish to employ the GPS input simply leave it disconnected The appearance and specifications can be changed without ant notification for the purpose of upgrade product pe Global TSCM Group Inc Global 12 W 32 St Su
11. definitely cause trouble The reason involves the amount of RF phase jump that occurs when the DF switches from one antenna to the next The receiver must adjust to the changes of input RF phase and the Doppler pulses are created in the receiver as a side effect of the re adjustment process c For phase jumps exceeding 120 degrees 1 3 wavelength distance the amplitude of the RF signal will suffer some decay while the receiver re adjusts to the new RF phase angle For phase jumps of 180 degrees wavelength distance the RF signal will completely decay to zero amplitude and then re appear in the receiver with reversed phase resulting in a noise pulse instead of a Doppler pulse d The lower frequency limit is more nebulous and ill defined Strictly soeaking there is no true lower frequency limit for the operation of a Doppler As the RF frequency descends the size of the antenna expressed in wavelengths grows progressively smaller yielding Doppler pulses of progressively smaller amplitude The relationship is quite predictable and linear cutting the RF frequency in half will cut the Doppler pulses in half also because the antenna dimensions have been cut in half expressed in wavelengths e This can be compensated to some degree by increasing the audio level in the receiver but there is a limit to this method at some point the audio level will be so great that serious distortion will result either in the Doppler inp
12. ions outside our facilities criminal activity and improper installation To take advantage of this warranty the product or part must be returned with transportation charges prepaid Proof of purchase date and explanation of the complaint must accompany the merchandise If our inspection verifies the defect we will either repair or replace the product at our election We will return repaired products at our expense but if we determine there is no defect or that the defect resulted from causes not within the scope of our warranty then you must bear the cost of returning the product The appearance and specifications can be changed without ant notification for the purpose of upgrade product
13. ite 604 New York NY 10001 USA THESTEALTH http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 Group DF Calibration Calibration DF unit will be necessary at the first time or any time you use your KN2C 2020 on a different vehicle It is necessary to recalibrate if you remove and replace the antennas on your vehicle and they are not placed back in precisely the same locations and geometry making Installing the antenna unit on the roof of your vehicle a Place N on the frontward of car 0 degree b Place S to on the backward of car 180 degree c Place E to on the passenger side of car 90 degree d Place W to on the driver side of car 270 degree Optimum spacing of the four array sides is given by the formula D 2630 F where D is distance between adjacent whips in inches and F is received frequency in MHz This distance is not critical but use care to place the whips in a perfect square pattern on the roof and align the array sides parallel to the sides of the vehicle It s tedious to set out the mag mount whips using just a ruler or tape measure I made separate cardboard templates for optimum 146 223 and 440 MHz spacing Cutouts in the template corners match the whip bases Emplacement is fast and misalignment is avoided with the templates Once the whips are in place I remove the template so it doesn t get rained on or blow away Kevin
14. orm RF sensitivity in all directions for the finished antennas The size of the square should never exceed 1 4 wavelength on any side d The RF output of the ANTENNA module is provide with a SMA connector which must be connected to the antenna input of the FM receiver with a coaxial cable RG 174 cable provided with BNC connector e The antenna control signal from the main antenna module must be connected to the main unit with the antenna control cable provided The FM Receiver NB FM Receiver 1 When installed the antenna input of the FM receiver is connected via a coaxial cable to the BNC connector located on the main antenna module of KN2C 2020T The FM receiver speaker output is connected to the KN2C 2020T audio input 2 The KN2C 2020T DF requires a NB FM receiver which the user must provide This receiver determines the operating frequency for the DF DF radio channel The receiver must be a FM receiver because Doppler shift is a form of frequency shift so the receiver s detector must be a frequency shift detector FM detector to recover the Doppler signal 3 The intended operating range of the KN2C 2020T DF is 100 to 1000 MHz but reasonable operation beyond these limits can be expected with a suitable antenna unit 4 No internal modifications to the FM receiver are required The Doppler modulation caused by the antenna switching results in an audio tone or whine that is detected along with any voice audio in the receive
15. ut circuits or in the audio output stages of the receiver Therefore the factors that determine the lower frequency limit are 1 The size of the antenna expressed in wavelengths 2 the maximum audio level that will not cause distortion and 3 the minimum detection level of the Doppler DF 2 The Antenna Unit The Bottom of Antenna Base Antenna Module The appearance and specifications can be changed without ant notification for the purpose of upgrade product po Global TSCM Group Inc THE STEALTH E 12 W 32 St Suite 604 New York NY 10001 USA e eer Group Http globaltscmgroup usa com saleseglobaltscmgroup usa com The Confidential Catch Tel 1 212967 4030 1 646 233 0383 Fax 1 212 967 7560 a The antenna unit consists of 5 horizontal metal bases antenna boards and 5 vertical antenna elements The each DF antenna module is connected to the main antenna module with 40cm 15 7 inches cable It can be secured to a vehicle roof with strong magnetic on the bottom of each module and the sponge pad can serve as cushions to prevent paint damage to the vehicle roof right photo b The antenna is 12 to 18 inches long each but never greater than 1 4 wavelength They are connected into each module with BNC c The four DF antenna modules must be arranged into a square with all sides of the square being of equal length within 1 inch The main antenna module should correspond to the center of four DF modules to ensure unif
16. yte format Negative voltage for the RS232 port is robbed from the host computer s TX line which is otherwise ignored Contents in the package Case with assembled parts requires a minimum assembly The 5 antenna units Patent product Cigar Jack Power Cord Screw pack 3 5 mm Audio Cable Set RG 174 cable 4 5 m 14 7 feet Antenna Control Cable 4 3 m 14 feet Bracket oe Se Ye YS The appearance and specifications can be changed without ant notification for the purpose of upgrade product Global TSCM Group Inc THE STEALTH 12 W 32 St Suite 604 New York NY 10001 USA e http globaltscmgroup usa com sales globaltscmgroup usa com The Confidential Catch Tel 1 212 967 4030 1 646 233 0383 Fax 1 212 967 7560 Global TSCM Group New Tork Prepare to use 1 Assemble Main Unit l 4 i EN al a oe RADIO DIRECTION FINDER a Put Front Decal on the front of case Begin right side Power switch hole first b Plug the power switch into the hole Push it until its clamps hold the case c Connect the switch on the sub board d Close the top cover with 4 screws e Attach the bracket if necessary The appearance and specifications can be changed without ant notification for the purpose of upgrade product l Global TSCM Group Inc gt 12 W 32 St Suite 604 New York NY 10001 USA THE STEALTH The Confidential Catch PA Gnas http globaltscmgroup usa com sales glob
Download Pdf Manuals
Related Search