Doc.-Nr: DE-3000-800100e User & Installation manual VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver Revision 4.0 KRT2 & KRT 2A Record of Revisions Revision Date 1 2 Subject 06 Juni 2010 Erstausgabe 20 Sep 2010 Revision Stecker / Redaktionelle Änderungen List of Service-Bulletins (SB) Service-Bulletins have to be inserted in the manual, and entered in the table. SB Number Rev. No. Date Issued Date Inserted Unit overview Item No.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 TABLE OF CONTENTS 1. GENERAL ...........................................................................................................................5 1.1. 1.2. 1.3. 1.4. 2. CONTROL general .............................................................................................................8 2.1. 2.2. 3. Symbols ....................................................................
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 5.6.3. External Audio Input ............................................................................................. 31 5.7. Finally Audio-Setup ...................................................................................................... 32 5.7.1. For gliders ............................................................................................................. 32 5.7.2.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 1. Revision 4.0 GENERAL This manual contains information about the physical, mechanical and electrical properties as well as a description for the operation and installation of the VHF airborne transceiver KRT2. 1.1. Symbols WARNING Non compliance may cause personnel injury due to radiation or fire. CAUTION Non-compliance may cause damage or incorrect operation of the transceiver.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 1.2. Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 1.3. Revision 4.0 Customer Service In order to process returned units most expeditiously, please fill in the form xxxxxxxxxxxxxxxxxxx to be found under AIRplus Service at www.airplus24.com. Suggestions which will improve this manual are very much appreciated at: www.airplus24.com Information concerning software updates are available under AIRplus Avionics at www.airplus24.com 1.4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 2. 2.1. CONTROL general Control Elements Overview 8 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A ON / OFF Revision 4.0 Self-locking switch DUAL WATCH 1. Scanning between the Active and Standby frequencies 2. Positioning cursor to the left when programming the station designator AUDIO SELECT 1. Stepping through the audio menus VOL SQ VOX TX INT EXT DIM CON SIT and MIC 2. Positioning cursor to the right when programming the station designator 1.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 2.2. Revision 4.0 Display Indication RX Meaning Reception Remarks RX is displayed during reception with a squelch value of 02 or more TX Transmission Transmitter operates normally Te Transmitter was turned off automatically after 2 min continuous operation Active frequency Active frequency station designator 125.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Display DUAL Meaning Active frequency AND Standby Frequency are monitored simultaneously [03] Favourite list index (0-99) (MEMORY) 125.100 upper Active 134.825 < BAT Er_PLL lower Revision 4.
Doc.-Nr: DE-3000-800100e User & Installation manual VHF- Communication Transceiver Revision 4.0 KRT2 & KRT 2A 3. OPERATION 3.1. General There is a normal operating mode in which the turning knob always is connected to the volume (VOL). The normal operating mode can be left by pressing the AUD, FREQ or MEMORY button. When not in the normal mode and there is no pilot action for more than 10 seconds the unit returns to the normal mode. 3.2.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.3.1. Revision 4.0 Direct Frequency Selection The Standby-Frequency is set with the tuning knob in 3 different ranges. The selected range is highlighted and can be changed with the FREQ button. Frequency ranges are: 1xx.nnn 1nn.xnn 1nn.nxx Press the FREQ button once or several times until the desired frequency range is highlighted.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 The selection procedure can be terminated with either the AUD or FREQ buttons. Without pressing any of these buttons the unit will return to its normal operating mode after 20 seconds. 3.3.3. Storing and Editing Favourites Any displayed Standby Frequency can be given a designator and both can be stored together as favourites in the favourite list.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 SAVE? is available for 20 seconds and must be acknowledged by the button. No acknowledgement within 20 seconds results in the termination of the storing procedure. When the button was pressed SORT? will show up. SORT? is available for 20 seconds and must be acknowledged by .
Doc.-Nr: DE-3000-800100e User & Installation manual VHF- Communication Transceiver Revision 4.0 KRT2 & KRT 2A 3.4. AUD – Audio Menu Any action in the Audio Menu requires the pointer (<) to be next to the Audio menu window (see picture). When the pointer is next to the Standby frequency window, the pointer can be repositioned by pressing the AUD button once. VOLnn is the Audio menu default display. No action on any control for more than 10 seconds will result in the VOLnn display.
Doc.-Nr: DE-3000-800100e User & Installation manual VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 For engine driven airplanes an initial setting of 05-08 is recommended. Gliders may need a lower setting. The lower the Squelch level value the higher is the input sensitivity. A high sensitivity setting is susceptible to noise from other sources like ignition strobe-lights etc. Standard SQ-level is 05 ... 08. Higher setting may suppress strong input signals.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.4.5. Revision 4.0 INT – Intercom Volume Pressing the AUD button four times enables the turning knob to set the intercom volume. INTnn 3.4.6. Range: 01 - 10 EXT – External Audio Input Volume Pressing the AUD button five times enables the turning knob to set the external audio input volume. External audio inputs can be audio alarms, voice alarms, music etc. EXTnn 3.4.7.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.4.10. Revision 4.0 MIC – Setup Each of the two microphone inputs channels can be configured individually, which enables different microphone types to be used. A maximum of two microphones of same type may be connected to each microphone input channel (see Microphone Connection 5.6.1). The MIC – Setup is the last item of the Audio menu and can be accessed by pressing the AUD button nine times.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 MIC levels 10 and 11 are special settings for low microphone levels like dynamic micro-phones often used in gliders. 10 is used for non-amplified Electret microphones with a 8 volt supply voltage. 11 is for dynamic microphones only. In the AUTO mode every minute the left microphone impedance is measured.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.5. Revision 4.0 DUAL Watch Because the communication transceiver KRT2 contains only one receiver, DUAL watch is achieved by alternating between the Active and Standby frequencies. The DUAL button activates and deactivates the dual watch function. Deactivation also can take place by pressing either the FREQ or MEMORY buttons.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 Standby and Active frequencies can be exchanged when in the DUAL mode. The transmitter operates on the Active frequency only. Summary: • Select the Standby frequency to be watched additionally. • With the AUD button and turning knob set SQnn to 02 or higher. • With the DUAL button activate the DUAL watch function.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.6. Revision 4.0 Transmitter Operation The unit transmits on the active frequency (upper line) as long as a PTT (press to talk) switch is pressed. Transmission Reception „TX“ indicates normal transmitter operation. In the lower left corner of the display the carrier modulation is dynamically displayed. It corresponds to the side tone which is not available on gliders when no earphones are in use.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.7. Revision 4.0 Self test monitor There is a permanent back ground test system active. The field for battery status & error (see Control Elements Overview) is used to indicate warnings and in case of hardware failure, different error reports. The warnings are: BAT low battery voltage (becomes active < 10,5V) At transmission A-match bad antenna match or antenna defective.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.8. Revision 4.0 Resetting to factory settings Returning to the factory settings can only be initiated during power-up. During power-up the MEMORY and DUAL buttons must be pressed simultaneously and the display will show “SET DEFAULTS”. When the buttons are released the resetting to the factory settings takes place. When resetting is completed “DONE” is displayed.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.9. Revision 4.0 SET UP - Menu During power-up the MEMORY buttons must be pressed There are two functions within the Set-up menu: • ERASE – Erasing of the favourites (frequency and designator) • Channel Spacing – 25kHz / 8,33kHz Programming of the Set-up is done with the lower 3 buttons. Their function is described on the display. MEMORY FREQ Set-up program exit is with the MEMORY button.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 3.9.2. Revision 4.0 Channel Spacing When in the SET UP – Menu pressing the MEMORY button will change into the Channel Space submenu. MEMORY FREQ The desired channel spacing then can be selected and the (X) indicates the actual channel spacing. 4. Remote Control Tandem-seat airplanes can be equipped with the KRT2RC Remote Control Unit.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5. Revision 4.0 Installation 5.1. Installation Hints The following hints should be considered for installation. A certified maintenance shop should perform the wiring. For the wiring diagram refer to chapter 5.7.3 5.2. Telecommunication Data The following data may be required for the radio station licence.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.4. Revision 4.0 Unpacking and Inspecting the Equipment Carefully unpack the equipment. Damages due to transportation must immediately be reported to the shipping company. Save the shipping container and all packing material to substantiate your claim. For storage or reshipment the original packing material should be used.. 5.5.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.6. Revision 4.0 Electrical Connections The 15-pin D-Sub connector contains all electrical connections except the antenna. The battery plus connection must be protected with a 4-amps slow blow fuse ! 5.6.1.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 Because the 8V supply voltage is switched off when dynamic microphones are used during glider flight the second (copilot) headset microphone is disabled. A maximum of two microphones of same type may be connected to each microphone input channel. 5.6.2. Earphone Connection Several earphones of same type can be connected in parallel. The total impedance should not be less than 60 Ohms. 5.6.3.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.7. Finally Audio-Setup This is an overview for a correct audio set up depending on the usage. 5.7.1. For gliders Press button AUD Press button AUD Press button AUD Press button AUD 5.7.2. 3x for VOX: 4x for TXm: 6x for EXT: 10x for EXT: Set to VOX 10 (turn off). Set to TXm**. Set to EXT 00 (turn off). Set to MIC-Level 11.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.8. 5.8.1. Wiring Wire Gauges Supply lines (Power, GND): AWG18 (0,96 mm²) Control lines: AWG22 (0,38 mm²) All wires must be aviation certified. 5.8.2. Connector Pin-Configuration 33 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.8.3. Wiring Diagram 34 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 35 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.8.4. Revision 4.0 Connection support In order to connect shields of all cables at a single point and to avoid ground loops an adapter board as shown is recommended. The adapter board is placed between the connector pin rows and soldered to the BAT plus pins 8,15 and GND pins 1,9. Further information printed on the board serves to connect all cables to its corresponding pins.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.9. 5.9.1. Revision 4.0 Antenna Antenna Selection • A 50 Ohms impedance VHF-COM-antenna is required. • The antenna must be approved in respect to aircraft type and installation location. • The antenna specifications can only be fulfilled when properly installed 5.9.2. Installation Recommendation • The manufactures instructions have to be observed.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.10. Revision 4.0 Microphone general The correct setting of the MIC and VOX values is of great importance for Intercom system (see 3.4.3. VOX Intercom Voice Trigger Level and 3.4.10. MIC Setup). The VOX intercom voice trigger level must be set to such a value that the intercom system is activated when speaking at a normal voice level into the microphone. It shall not be triggered by normal cockpit noise.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A Revision 4.0 A test flight is recommended to verify proper transceiver operation. The following items should be checked: • Check transceiver operation with a radio station at least 50 km away when at 2000ft or above. • Check if there is unusual electrical interference or noise. • If possible check the transceiver operation on low and high frequencies of the VHF frequency band. 5.12.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.14. 5.14.1. Drawings Dimensions 40 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 5.14.2. Installation Directions Connection Area Panel Cut-out 41 of 45 Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 6. 6.1. Revision 4.0 ANNEX Frequency / Channel- schedule The following table contains the operating and displayed frequencies between 118.000 and... 118.100 MHz. The table can be continued up to 136.975 MHz following the same principle. Operating frequency (MHz) Cannel Spacing (kHz) Displayed channel 8.33/25 kHz Mode Displayed Channel 25 kHz Mode 118.0000 25 118.000 118.000 118.0000 8.33 118.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 6.2. Revision 4.0 Technical Data GENERAL Compliance Standards ETSO-2C169a, ED-23B Class 4 ED-23B Class C TSO-C169a,Class 6 TSO-C169a, Class H1 & H2 Standards EUROCAE ED-23B RTCA DO-160E RTCA DO-178B Software Level D Dimensions Height: 65mm Width: 65mm Depth: 144mm plus rear panel plugs 60mm 0.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver Revision 4.
User & Installation manual Doc.-Nr: DE-3000-800100e VHF- Communication Transceiver KRT2 & KRT 2A 45 of 45 Revision 4.
