Expert Electronics SunSDR2 DX User Manual

Expert Electronics SunSDR2 DX User Manual

Direct sampling hf/50 mhz/vhf transceiver
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Expert Electronics
Direct Sampling SDR transceiver
SunSDR2 DX
HF/50 MHz/VHF TRANSCEIVER
USER MANUAL
© 2020 Expert Electronics
1.3.2

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Summary of Contents for Expert Electronics SunSDR2 DX

  • Page 1 Expert Electronics Direct Sampling SDR transceiver SunSDR2 DX HF/50 MHz/VHF TRANSCEIVER USER MANUAL © 2020 Expert Electronics 1.3.2...
  • Page 3: Table Of Contents

    Spectrum Scope scaling ................51 5.5.2 Waterfall ....................52 Status bar ....................53 Options ...................... 54 5.7.1 Device ....................54 5.7.1.1 VOX ....................55 5.7.1.2 DSP ....................55 5.7.1.3 TX ....................59 © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 4 SPLIT + Sub RX Operation ..............101 RIT/XIT ....................101 7.7.1 RIT ...................... 101 7.7.2 XIT ...................... 102 Digital modes operation ................. 103 Firmware-based protections ..............103 7.10 Settings folder ..................104 © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 5 TABLE OF CONTENTS 7.11 2 TRXs on 1 PC ..................104 8. RESET SETTINGS AND FIRMWARE 9. REGULATORY REQUIREMENTS © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 6: Read It First

    READ IT FIRST Congratulations On behalf of the whole Expert Electronics company, we'd like to thank you for purchasing one of the best modern SDR transceivers! The SunSDR2 DX transceiver is the smallest 100W SDR transceiver, which is perfect for...
  • Page 7: Supplied Accessories

    Block Diagram will be available later. Supplied accessories · SunSDR2 DX transceiver · External fan fastened to the heatsink, size 140 x 140 mm · LAN-cable for connection to a local network (1.8m) © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 8: Precautions

    Before connecting the SunSDR2 DX to the DC power line, ensure it is grounded. Never use the SunSDR2 DX transceiver without grounding · It is forbidden to connect the SunSDR2 DX to PC with the voltage presence on it or in the switched condition ·...
  • Page 9: Expertsdr2 Software License Agreement

    The same applies to an unmatched load · Avoid the exposure of the atmospheric downfalls on the SunSDR2 DX and never spill any liquids (especially aggressive) on it ·...
  • Page 10: Copyrights

    The manufacturer assumes no responsibility for the material, moral or any other kind of damage, whether expressed or implied, caused by using of external devices along with the SunSDR2 DX transceiver.
  • Page 11: Front Panel Description

    Headphones jack 6.3 (PHONES) Warning! Never use headphones with a mono connector! If you have a monophonic headphones, use the stereo 6.3 mm Jack and connect headphones to one of the channels. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 12 FRONT PANEL DESCRIPTION Warning! Never connect two stereo channels with each other! Note: Headphones with high impedance may sound quieter. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 13: Rear Panel Description

    Direct input, bypassing Band Pass Filters (BPFs). ADC IN connector may be used for connection of the receiving antennas. Between ADC IN and RX OUT you can put a transverter, ADC IN additional BPFs, preamplifier, attenuator etc. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 14 Press this button to reset IP-address and UDP-ports of the RST (reset) button transceiver to the default IP values: 192.168.16.200, ports: 50001, 50002. KEY connector, jack CW key connector. DO NOT PRESS WITHOUT NEED! © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 15: Antenna

    To eliminate the risk of electric shock it is essential to use a reliable grounding connection for the transceiver, the best grounding point is the antenna connector. Warning! Never use water or gas pipes for grounding! Never use the SunSDR2 DX transceiver without a reliable grounding! © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 16: Accessories

    Releasing the paddle returns the transceiver to the RX mode. CW key connection via COM-port. CW paddle can also be connected to the COM-port of your PC, according to the picture below. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 17: External Linear Amplifier

    ALC-system. External Control devices The SunSDR2 DX transceiver allows you to control external devices via seven electronic keys in the EXT CTRL connector. With the keys you can have direct control of antennas, external band pass filters, external PA's bands, HF preamplifiers, external transverter PTT etc.
  • Page 18: Reference Input

    VHF, SHF transverter may also be connected to the transceiver via the ADC IN and DAC OUT connectors. ADC IN used as the input in the RX mode. DAC OUT used as the output in the TX mode. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 19: Dac Out Low Power Output

    The RX OUT connector is the output of the transceivers receive path. When the ADC IN is enabled, the signal received on the HF path from the active antenna input, goes to the RX OUT. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 20 Note: · The signal passing through the HF path, with output via RX OUT, may be attenuated by the - 20dB attenuator, if you set it in the software. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 21: Connectors Pin-Out

    DWN TNG Not implemented in the software UP TNG Not implemented in the software DC 5V output with maximum current up to 20 mA Output MIC_GND MIC case Mic signal input Input © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 22: Ext Ctrl

    Not implemented in the software MD15 microphone pinout EXT CTRL Out # Output name Description Note Programmable key with open collector Output Programmable key with open collector Output Programmable key with open collector Output © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 23 Maximum allowed current via electronic keys is 500 mA! While connecting an inductive load (relay, solenoids etc.) to the X1-X8 keys, it's important to connect the protective diode in parallel to the load! © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 24: Expertsdr2 Software Description

    All the unmentioned settings cannot cause the fatal damage of the SunSDR2 DX transceiver's hardware, so you can safely experiment with them. You're dealing with the software-defined radio – SDR, the main settings and signal processing happens in the software.
  • Page 25: Global Controls Panel

    If you disconnect antenna you can see how receiver’s noises are changing when you switch the ATT. Receiver's noise level is lower when you select ATT 0 dB, it means © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 26 - enable/disable sound output from the PC's sound card (SC). There is a constant sound output via the transceiver's front panel, sound output is duplicated in the PC's sound card. - enable/disable button of the frequency memory panel (MEM). © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 27 RX2, considering they are on different bands. If they are on the same band, then Drive level will be the same for both RXs. Tone level is stored only for frequency bands. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 28 All new profiles will be stacked up to the drop-down menu as a new line. · In a Global Profile you save current states of APF / ANF / NR / NB etc. with no relation to mode and band. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 29: Transceiver Control Panel

    - About button opens the new window with the info about current version of the ExpertSDR2 software: - pressing the Fullscreen mode button will unfold the software window on the whole screen. Transceiver control panel © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 30 CW keyer it will generate tone signal with PITCH frequency. Reverse paddle - enable the checkbox to generate dots and dashes in reverse order. Macros Speed - speed of CW macroses generation via TCI interface. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 31 Frequency – top limit of the horizontal (frequency) scale of the transmitter. Dynamic – vertical scale (dynamic range). Logarithmic – allows you to change the ratio of the Frequency scale, making it either linear (by default) or logarithmic. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 32 Setting the right rotator settings is easy, you are trying to reach max symmetry with the Taps parameter (in some applications it is called stages), after each change of this parameter check the result on the analyzer. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 33 Attack - this is the period, when the limiter is decreasing volume to reach the level that is determined by Max Amplitude. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 34 High Shelf - this filter cuts or boosts signals of frequencies above the cutoff frequency, determined by Frequency. Gain value determines attenuation or boost level of frequencies above the cutoff frequency. Frequencies below filter’s AFC will not be altered. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 35 Release time is short, as soon as the signal level goes lower than Threshold, it creates a sharp noise, longer Release time creates a smooth transition from opened to closed state, it may sound like fading. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 36 Release period, depends on the set time. If in Release period signal is compressed, it is compressed with the same Ratio (dB) as the signal before it. Only in that case sounds lower than Threshold may be compressed. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 37 Attack - this is the period, when the limiter is decreasing volume to reach the level that is determined by Max Amplitude. Release - this is the period, required for the signal level to be restored to the default value. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 38 Attack, increasing the Attack value will increase delay period. Parameters: Attack – signal attenuation period, this value determines how fast AGC will decrease the amplitude of the loud signal to the Maximum Amplitude value. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 39 In the Profile tab, you can save settings of the whole TX processing module in a separate module, independent from the main software profile. Load PROC settings from a file by pressing the Import button and save a profile in a file by pressing the Export button. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 40 - volume and balance control menu for the first and second receivers separately (Mixer). When you use only RX1, the Mixer settings are off, but when you enable the RX2, it activates Mixers for both RXs. - open the 18-band RX equalizer menu (EQ). © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 41 Remain in TX checkbox - set to stay in the TX mode after the timeout. - Continuous Tone-Coded Squelch System button. In some cases, it's required to activate the squelch with the help of the CTCSS tones. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 42 - AGC sensitivity control slider (Automatic Gain Control on classic transceiver). The adjusted level is saved per band. - slider for the transceiver's output power adjustment. - slider for the transceiver’s output power adjustment while transmitting the tone (carrier) signal. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 43 50 ums (like in first order LPF), US standard 75 ums. There is no such standards for NFM, thus we used our own parameter. In NFM time constant is high, which allows to mute HF noise when there is no stations and © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 44: Frequency And S-Meter Indicators

    (S-meter) and several control buttons. Displaying elements: - VFO B frequency indicator (sub-receiver). Note: · You won’t hear the audio from the VFO B if it is out of the panorama bandwidth. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 45 LOCK – lock the VFO A frequency tuning. SAVE – save the current VFO A frequency and mode type in the memory panel. SET – manual frequency input for VFO A or VFO B. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 46 Click the right mouse button on the S-meter and select the display type for RX or TX: - ADC type displays the power in each quadrature channel (double scale) in RX mode. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 47: Dsp Control Panel

    Receive Incremental Tuning. - In the drop-down menu, you can set the frequency offset in Hz. Reset - resets the offset value to zero (more details in - Transmit Incremental Tuning (more details in © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 48 - enable the Second Noise Blanker for impulse interference. Note: · The NB1 and NB2 algorithms are different. Try each of them to reach the best impulse interference reduction. NB1 and NB2 Noise Blankers can be used simultaneously. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 49 RX filter. For fine-tuning rotate the mouse wheel with a 1 Hz step. You can set up to 8 Notch Filters for each band. When you change the band you automatically © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 50: Panorama Description

    In this window, you can see the spectrum, with the sample rate from 39 up to 312 kHz (adjustable by User) and the RX filter to tune and listen to the stations. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 51: Spectrum Scope Scaling

    Press and hold the right mouse button, then move it left/right to zoom in/out the panorama or press and hold the left mouse button, then move it up/down to change the ratio of the spectrum to waterfall. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 52: Waterfall

    Waterfall graphic - timed spectrum scope in the format: amplitude - brightness, frequency - horizontal, time - vertical. The comfortable settings are set by default, but you can change them if necessary (more details in Waterfall tab © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 53: Status Bar

    · The temperature inside the transceiver. · Yellow warning triangle, in case you've enabled the BreakIn with CW or SSB mode. · Coordinated Universal Time (UTC). · Current date and Local Time. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 54: Options

    In the Device menu, you can find software functions of the signal processing and hardware settings. Device – Shows that it's ExpertSDR2 for SunSDR2 DX. SDR Address – physical static IP-address of the SDR module, by default 192.168.16.200. SDR Port – port number, which is used for the data exchange, by default 50001.
  • Page 55: Vox

    Timeout to RX – time before transceiver will turn back to RX mode. · Threshold – VOX activation threshold. 5.7.1.2 DSP On the DSP tab you can see the AGC's and Digital Signals Processing settings. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 56 Digital processing filter's settings. There you can find fine the settings of the receiver's digital processing filters. DSP functions clear the signal from abnormal noises and crosstalk. These are the standard functions: © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 57 The higher the receiver's filter taps value, the more rectangular the filter's shape, but it also increases the signal pass delay. That is why the user should find the best settings for himself, © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 58 USA – set this checkbox to listen to WFM stations in the USA or South Korea. Default - press to return settings to the default state. Each settings category has the Default button. Press the Default button if you set wrong values and don't like the result. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 59 Frequency 1/2 – set the independent frequency for the Tone 1 and Tone 2 signals respectively. · Tone 2 – enable the Tone 2 signal. NFM - Narrow band receiver FM settings. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 60 Rx to Tx – delay time to generate HF signal after turning from RX to TX. · Tx to Rx – when you stop transmitting, the transceiver waits for the certain “delay time” then switches from TX to RX. Warning! © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 61 Port name - COM-port number, which is connected to the key. · Lines - in the Lines drop-down menu you may swap Dot and Dash signals with COM-port bits RTS and DTR. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 62: Ext Ctrl

    GND of the radio and direct connection to negative pin of the power supply connector. You should set protective diode in parallel with FAN, cathode to +V, anode to -V. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 63 While turning on 60M band, #3 key will be enabled (#2 key will be disabled), it is active in both RX and TX modes. · Connecting relays to these keys, you may create an additional antenna switch, band filters switch, PA band switch etc. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 64: Expert

    Power Correction - output power correction menu, set the output power value for each band. Value = 100 means the maximum output power of the transceiver. Note: · Adjustments may be required when connecting an external power amplifier to the transceiver. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 65 As a rule used for lab measurements for receiver's linearity with other devices. · While operating in real air, noise source is an actual noise of the air, that's why there is no need to enable DITH function. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 66: Sound Card

    5.7.2.1 Sound card In the Sound card category, you can see the settings of the sound card, which can be used for sound output in the RX mode. Note: © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 67: Line Out

    Line out volume has a constant max value and cannot be changed by the operator. · As a rule sound output via the Line out is used for recording communications in contests and other purposes. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 68 Convert output file to MP3 - after the end of the recording process wave file will be converted to MP3. If you convert files longer than 30 minutes, all information after 30 minute mark will be cut off. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 69: Vac Menu

    To transmit the signal from VAC, PTT command should come from CAT interface, not by pressing the MOX button or PTT foot-switch. Thus third-party software controls when transceiver goes to TX or RX via CAT interface. · VAC always operates in 2 channels. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 70: Display

    System. This setting determines the ITU region. · Language - Interface language menu. Select the required language from the list. · Skins - Software color theme menu. Select the required software color theme from the list. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 71 Compact band/mode panel - check it to make software layout more compact, removing the line with band and mode buttons, placing 2 new shortcuts on the right to the frequency indicator. · © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 72: Spectrum

    Set the required specter's graph update period. The bigger the number, the more FPS on the spectrum scope, along with the higher processor load. Render mode - Spectrum render mode: lines, gradient. Set the required specter render mode. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 73 Set the Show stations from Memory panel checkbox to show on the spectrum scope previously stored stations as markers (blue dots in the top area of the spectrum scope). When rollover the station's marker you'll see the commentary. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 74 Show S-Meter on Band Scope - Show the S-Meter on the Band Scope. Set the Show S-Meter on Band Scope checkbox to show the S-Meter on the Band Scope for each VFO. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 75: Waterfall

    Remove flicker - Checkbox to remove the waterfall flickers. Set the Remove flicker checkbox to get rid of the texture flickers in the waterfall, also it slightly clears the waterfall from air noises. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 76: Grid

    Show S-Meter – Enable animated S-Meter near the receivers' filter on the spectrum. Set the Show S-Meter checkbox to display S-Meter near the receiver's filter. In the RX Filter , RX Filter , TX Filter categories displayed filters' color and transparency settings. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 77: Background

    Select in the Background type menu spectrum scope background render type. In the Solid mode available settings are: · Color – Background color menu. Choose the required background color from the palette. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 78: Indicators

    In the Peak/RMS drop-down menu you set the type of output power which is displayed on the Power and S-meters. What you check there always displayed as text on the Power meter. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 79: Cat

    ECATv1 - exchange protocol compatible with TS-480 transceiver. This protocol allows exchanging data with external devices and software via COM-port. · Enable CAT – Checkbox to enable control of the transceiver via the CAT-system. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 80 Port name – COM-port number. · DTR/RTS – COM-port line for receiving the PTT commands. Set one of the DTR/RTS line checkbox to select them as a control. · View log – display CAT command log. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 81: Omnirig

    OmniRig, then COM-port and other settings in the OmniRig software are not required. Select in the OmniRig settings any idle COM-port in the system, to avoid conflict. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 82: Panel

    If one E-Coder panel is connected to the PC in the Panel menu will be displayed one E- Coder 1 tab, if several E-Coder panels are connected to the PC in the Panel menu you'll see several tabs E-Coder 1, E-Coder 2 etc. with identical settings for each panel. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 83 Mode Up/Down – mode switching. MOX – enable/disable manually operated transmit mode. PA – enable/disable power amplifier. Preamp Up/Down – preamp or attenuator level switching. Start/Stop – start/stop the ExpertSDR2. RX ANT - enable/disable receive antenna. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 84 Listen RX2 only - listen to the RX2 in both channels. Listen RX1 in left channel, RX2 in right – listen to the RX1 in the left channel and RX2 in the right channel. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 85 Filter Low/High – tuning the frequency of the low/high filter's front. Filter Width – adjusting the filter width. Filter Shift - shifting the filter's central frequency. Drive – adjusting the output power. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 86 Filter Shift - set the filter's shift change step, per knob's clack. Drive - set the output level power change step, per knob's clack. RF Gain - set the RF gain step, per knob's clack. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 87: Features

    Read an instruction for your software, to know which arguments are supported. 5.7.8 ExpertSync ExpertSync interface was developed long before TCI. It allows you to synchronize the tuning frequency, mode type and RX/TX between several Expert Electronics devices. ExpertSync © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 88: Cw Skimmer

    ExpertSync software. 5.7.9 CW Skimmer In the CW Skimmer menu, you can see the connection settings between the transceiver software and CW Ckimmer software or Internet server-spotter. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 89 Output – select physical output and driver type for the audio device. · Sample rate – sampling frequency. Note: · If CW Skimmer is installed on the transceiver's PC, then for the signal output you need to use Virtual Audio Cable. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 90: Shortcuts

    Shortcuts will be active only if the transceiver's software window is in focus. · Enable - Enable shortcuts. Set the Enable checkbox to activate assigned shortcuts. · Command - Functions column. In the Command column displayed all transceiver's functions available for shortcuts. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 91: Iq Recorder

    (you can connect it to Loggers, Skimmers, PAs, Antenna switches etc. at the same time). Link to the list of files with the description of the interface in English and Russian and source code of the demo-client software with TCI support. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 92: Spot Settings

    All parameters set in % are calculated based on the DOT length according to the set WPM. 5.7.13 Spot settings In the Spot settings menu, you can adjust spot settings you receive from CW Skimmer and telnet clusters. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 93 Add button, it’s done. To delete a server connection, select it and press the Delete button on your keyboard. Note: · Enable the Show spots checkbox in the Spectrum tab © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 94: Technical Characteristics

    -20 dB; -10 dB; 0 dB; +10 dB Additional VHF preamplifier, dB SunSDR2 DX has a set of octave band pass filters for the HF band, narrow band pass filter for the 2 band and wide filters for entire Nyquist zones 0...65 MHz, 95...155 MHz.
  • Page 95: Transmitter

    VHF WideRX: 95-155 MHz (Butterworth - 5 Order) Also SunSDR2 DX has filters which are a part of the RX path and cannot be switched off: HPF for VHF (100 MHz cut frequency) to eliminate strong out-of-band stations coming from LPF for HF (70 MHz cut frequency) to eliminate strong out-of-band stations coming from VHF.
  • Page 96: Other

    Operating temperature, °C (°F) 0...+50 (+32...+122) Note: · SunSDR2 DX cannot turn to TX when connected to a 15V power supply. The max allowed power supply voltage for TX mode is 14.8V, if higher internal amplifier won't work. · The fan of the transceiver is controlled via the firmware, it should start rotating at ~40 Degrees.
  • Page 97: Transceiver Operations

    TRANSCEIVER OPERATIONS This chapter describes all basic transceiver functionality. Local operation Local operation is a standard way to use the SunSDR2 DX transceiver. Make the following connections as described below: 1. Connect headphones and microphone to the transceiver; 2. Connect HF-antenna to the A3 connector;...
  • Page 98: Antenna Switch

    Antenna switch Antenna switch operation: The SunSDR2 DX has the antenna switch, for each frequency band, antenna switch saves its own antenna input and output. When two software receivers are active (RX1 and RX2), antenna input is the same for both receivers (because device have one ADC), but the transceiver's antenna output may differ if software receivers work on different frequency bands.
  • Page 99: Voice Recorder Operation

    In the meantime the receiver will be silent. 2. When the playback ends you'll hear the air again. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 100: Split Operation

    Voice Recorder, is transmitted on the air without processing e.g. TX processing module does not influence signal transmitted via the Voice Recorder. · Attention, recordings of the air signals should be used for personal use only. SunSDR2 DX operator bears full responsibility for using the recorded signal. ·...
  • Page 101: Split + Sub Rx Operation

    Tuned TX frequency displayed as the red line. RX frequency displayed as the green line with the filter band (on the picture you can see USB mode). © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 102: Xit

    RIT next time, the offset will equal the previous value. 7.7.2 The XIT offset in the TX mode means that receiving will be held on the tuned frequency and transmission frequency will differ by the offset value. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 103: Digital Modes Operation

    XIT functionality is identical to RIT functionality. Digital modes operation The SunSDR2 DX transceiver allows you to operate in digital modes with the help of the certain programs (which are not provided by the manufacturer). More information about the connection between ExpertSDR2 and digital software is explained...
  • Page 104: Settings Folder

    Mac OSX: /Users/UserName/Library/Preferences/Expert Electronics/ExpertSDR2 7.11 2 TRXs on 1 PC You can use several SunSDR2 DX transceivers on the same PC simultaneously. 1) Make sure both transceivers have different IP addresses and ports. To do that, connect one transceiver to a PC and set to it new static IP and port, they should deffer from the default values by at least 2.
  • Page 105 When the transceiver is switched on, the RST button won't be active. Pressing it doesn't have any effect. Warning! Do not switch off the transceiver with the PWR button while LED is blinking. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 106 4. Release the BT button; 5. Launch ExpertSDR2 software and open Options-> Device menu-> Expert tab and press Firmware update. 6. After firmware update is finished, LED will turn to constant green light. © 2020 Expert Electronics SunSDR2 DX User Manual...
  • Page 107 RESET SETTINGS AND FIRMWARE REGULATORY REQUIREMENTS We Expert Group LLC declare that SunSDR2 DX transceiver has been tested in accordance to essential protection requirements of the R&TTE Directive 1999/5/EC on the approximation of the laws of the Member States relating to Radio Spectrum Matters and found the rest results indeed meet the limitation of the relevant test standard(s) listed below: EN 301 489-1: V 1.9.2 (2011)

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