Revision History ............................................................................................................................................ 4
4.1 First of all ..................................................................................................................................... 15
4.3 A first trip .................................................................................................................................... 16
5 User Interface ..................................................................................................................................... 21
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
4
Page 5
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
RX Demodulator
TX Modulator
User Interface
USB Interface
FPGA
Ver. 1.29
Date: 03/17/2016
Ver. 1.28
Date: 06/06/2016
Ver. 4.63
Date: 06/06/2016
Ver. 4.09
Date: 05/28/2015
Ver. 2.00
Date: 07/30/2014
1 Overview
1.1 Notice
Amateur radio regulations vary from country to country. Check your local amateur radio regulations and
requirements before operating the ELAD FDM-DUO.
1.2 Firmware versions
The features described in this manual refers to the following firmware versions :
1.3 Introduction
Thank you for choosing the FDM-DUO. It is an innovative dual mode SDR (Software Defined Radio)
transceiver covering the frequency range from 9kHz to 54MHz. The FDM-DUO can be used like a
standard transceiver in stand-alone mode or in remote mode to exploit the full potential of the ELAD
FDM-SW2 software. The FDM-DUO can still be connected to the FDM-SW2 software when it works in
"stand-alone" mode.
NOTE: For detailed information about ELAD FDM-SW2 software refer to user manual available at
http://sdr.eladit.com/FDM-sw2 20Software/Doc/
1.3.1 Main Features
Reception frequency range: 9kHz to 54MHz in direct sampling mode.
Transmission bands: 160m to 6m.
Selectable output power of 5W or 0dBm RF Out connector.
Double antenna connectors (RTX for single antenna use or RX/TX for separated antenna use).
Operating modes: CW, CWR, LSB, USB, AM and FM.
ADC Linear LTC2165,16bit @122.88MHz.
FPGA Spartan 6 XC6SLX25 + Serial Flash for stand-alone mode.
Stand-alone RX demodulator with STM32F4 ARM floating point μController.
LPC1766 Cortex M3 for LCD & Keyboard control.
TX modulator with STM32F4 floating point μP + AD9957 DDS @368.64 MHz.
Clocking source Si5338 driven by 10MHz TCXO or external reference input.
TX modulator from I2S source: MIC using Cirrus CS5346 or USB integrated Codec (CM6510B
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
6
Page 7
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
1.4 Precautions
Connect the transceiver only to a power source described in this manual.
Take care when plugging-in cables, avoid applying sideways pressure that might damage the
connectors.
Avoid operating in wet conditions.
For better performance and safety, connect the transceiver to good earth ground using a short,
heavy, braided cable.
Ground all outdoor antennas for this receiver using approved methods. Grounding helps protect
against voltage surges caused by lightning. It also reduces the chance of build-up of static
charge.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
7
Page 8
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
2 Panels Description
2.1 Front Panel Description
1 - LCD Display
See LCD Display.
2 - E1 Knob
Available functions : settings of audio volume, squelch for FM, microphone gain (MIC) while
transmitting, reception gain control (AGC), noise reduction (NR), noise blanker (NB) and auto notch (AN).
See Knobs functions for more information about knobs use.
3 - Main Knob
Available functions : VFO tuning, memory selection in MEM mode, step selection in VFO mode. See
Knobs functions for more information about knobs use.
4 - Main audio output for speakers and headphones
5 - Auxiliary audio output
6 - E2 Knob
Available functions : settings of reception filters, transmission power (PWR) while transmitting, CW pitch
value, and RIT value. See Knobs functions for more information about knobs use.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
8
Page 9
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7 - MODE and MENU buttons
Operating mode selection (AM, CW, …). Tune mode activation. “QuickStep” function activation. Access
to the setup menu. See Keys functions for more information about keys use.
8 - VFO and MEM buttons
Basic VFO and memory operations. See Keys functions for more information about keys use.
2.2 Rear Panel Description
1 - USB Receiver Data Connector
USB 2.0 port. Connect it to computer to use the SW2 software. Please use the supplied cable.
2 - Frequency Reference Input
SMA 50 Ohm connector. Apply an 10MHz 0dBm signal.
3 - RF Output Connector
SMA 50 Ohm connector. 0dBm transmission signal.
4 - Output/Input Antenna Connector
M-type 50 Ohm connector. Antenna output when using two antenna (TX). Antenna input when using
only one antenna (RTX).
5 - Input Antenna Connector
M-type 50 Ohm connector. Antenna input when using two antenna (RX).
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
9
Page 10
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
6 - PTT Output Connector
3.5mm stereo jack connector. PTT Output to connect a switch-box or an amplifier. This output is
enabled while transmitting.
RING: do not connect (reserved for future use)
TIP: PTT output (NPN Open Collector transistor, max.: 20V/200 mA)
7 - USB Audio Connector
USB 2.0 port. Connect it to the computer to access to the FDM-DUO soundcard. In input, allows fully
digitals transmissions. In output, allows to access to the received signal in a digital way.
8 - CAT USB Serial Port
USB 2.0 port. Connect it to the computer to manage the FDM-DUO through the CAT (Computer Aided
Transceiver) protocol.
9 - Power Switch
Turn on /off the FDM-DUO.
10 - Power Connector
Voltage to apply : 13.8V. Maximum current consumption : 2.5A DC.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
11
Page 12
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
13 – Key/Paddle connector
3.5mm stereo jack connector.
The menu 37 (CW IN) allows to choose the input type (key or paddle).
The menu 39 (CW KEY) lets you choose the type of connection made when you use a key (i.e.,
connection on the TIP or on the RING).
The menu 40 (CW TIP) lets you choose the type of connection made when using a paddle (i.e., position
of the dot and the dash on the TIP or on the RING).
14 – Ground Connector
For better performance and safety, connect it to an earth ground using a short and wide cable.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
14
Page 15
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Example
Settings Menu
Valid values can vary from 500 ms to 2500 ms.
Long Pressure
Example
The tuning knob can be pressed to change the tuning step or to enter the “Digit by digit tuning
The tuning knob operations are detailed in section 5.1.1.1 - Tuning.
Tuning
4 Quick Start
These instructions are intended only for a quick guide, detailed instructions are given later in this
manual.
4.1 First of all
To avoid having a forest of buttons and knobs as front panel, each control has different operating
modes.
The buttons can be “short pressed” or “long pressed” to activate different functions. The different
functions associated to each pressure are written in different colors just above the corresponding
button. Each top white label is associated to the “short pressure” on the button, while the lower blue
label is associated to the “long pressure”.
swaps A and B VFOs if “short pressed”, and swaps VFO and Memory mode if “long pressed”.
The A/B label refers to the A/B VFO swap obtained with a “short pressure”.
The M label refers to the VFO/Memory mode swap obtained with a “long pressure”.
A button is “long pressed” when it is kept pressed for more than 1 sec.
This value can be changed using menu 71 ( Hold Time ) as explained in section 5.9 List.
The knobs can be pressed as well to control a different parameter.
The E1 knob usually controls the audio volume, but if pressed once it controls the squelch value.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
15
Page 16
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Reset
4.2 Reset
When first approaching a largely programmable device like FDM-DUO it is nearly unavoidable to mess
some parameters with useless values. This is not a problem and should not prevent users from trying
the different settings, since a “reset” command is available to bring back the device to the factory
settings.
The reset procedure is quite simple:
• short press the MENU button
• turn the F2 knob until reading 81 DEFAULT on the display
• short press the E2 knob to show “N” on the right of DEFAULT
• turn the E2 knob to change “N” to “Y”
• short press the E2 knob
• wait for the radio reset and restart
4.3 A first trip
A radio like FDM-DUO has many possible application scenarios, both used as a stand-alone device, and
paired with its mate software.
In this section the simplest and most common uses will be shown, to allow a first familiarization with
FDM-DUO.
4.3.1 Reception
The first use for FDM-DUO is, clearly, reception. To do that, just connect the device to a 12V power
supply (or to a battery) and turn it on by using the back switch.
After some secs the device is in reception mode with VFO A enabled.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
16
Page 17
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
The button is used to change to mode: at each short press the mode is changed to the next
Modes
It is possible to change the tuning step to various values with a short pressure on the tuning knob.
Once the desired step has been selected, another short pressure on the tuning knob will bring it back
to control the tuning, using the new selected step.
Tuning
Volume and bandwidth
There are, though, some special memories holding the value of the low frequency limit of each band
The “Quick Mem” mode can be used to quickly reach the wanted band; it is activated by long
Bands
The main controls are as follows:
FDM-DUO does not have the “band” concept, thus there is no “band switch”.
as factory settings.
pressing the button.
Press and hold the button until the display shows the wanted band.
possible mode.
The tuning is done using the main tuning knob.
It is possible to change the tuning step to an alternate value with a short pressure on the
button.
Another short pressure on the button resets the usual tuning step.
This leads the tuning knob to select different tuning steps.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
17
Page 18
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5. Noise Reduction: it is possible to activate and set the level, if activated the NR icon on the
6. Noise Blanker: it is possible to activate and set the level, if activated the NB icon on the
7. Auto Notch: it is possible to activate and select two different levels of intervention; when
4. Receive Incremental Tuning Value: this allows to move the reception frequency away from
the transmission frequency; this function appears only if the previous Receive Incremental
Enhancing Reception
By clicking on the E1 knob, it is possible to activate some useful options:
1. Audio Volume: this, as seen previously, is the default behavior;
2. Squelch Value: if activated, the related icon on the display blinks;
3. Automatic Gain Control On/Off: if activated, the AGC icon on the display blinks;
4. Automatic Gain Control Speed: it is possible to select Slow, Medium, or Fast;
display blinks;
display blinks;
activated, Auto Notch detects and kills an audio persistent tone.
By clicking on the E2 knob, it is possible to activate some useful options:
1. Filter Bandwidth: this, as seen previously, is the default behavior;
2. CW Pitch: this allows to choose the preferred CW reception tone;
3. Receive Incremental Tuning On/Off;
Tuning is set to On. More information can be found in section 5.1.1.3 - E2 Receiver Settings.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
18
Page 19
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
In case of need it is possible to use the E1 knob to control the “Mic Gain”: a short pressure on the E1
knob lets you control the Mic Gain instead of Volume, and vice versa.
Transmission in AM, SSB and FM Mode
The E1 knob controls the Volume or the CW speed (in WPM). The two functions can be swapped
with a short press on the E1 knob.
Transmission in CW
Using the parameter 73 – “BACKLIGHT CHANGING” it is possible to disable this change if it is deemed
annoying, for example when operating in CW Break In mode.
Transmission
4.3.2 Transmission
Before transmitting, always check the antenna conditions, so as to avoid problems to the PA; this must
be done on a free frequency to avoid disturbing any running QSOs.
When FDM-DUO is transmitting, the display changes its backlight.
To transmit you just have to use the PTT on the mike and speak.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
19
Page 20
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Due to the importance of the antenna tuning, FDM-DUO is capable to generate the signal that allows
The transmission will end after a time period established by parameter 49 - “TUNE TIME” (factory set
During the transmission it is possible to show different information: pressing E2 knob it is possible to
The tuning operations could be refined using parameters 55 – “TUNE POWER” and 56 – “TUNE PTT”.
Parameter 55 – “TUNE POWER” allows to select the power to be used when in tune mode, for
example reducing the power as a means to protect final power transistors when not sure of the
Parameter 56 – “TUNE PTT” allows to deactivate an external PA during tuning operations, by
disabling the PTT Out signal during tuning operations.
Antenna Tuning
antenna tuning.
This can be done with a long pressure on the button.
to 10 secs) or by a new long pressure on button.
show frequency or forward power, or reflected power, or Standing Wave Ratio.
During the transmission it is possible to tune the antenna, if needed using an external ATU.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
20
Page 21
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5 User Interface
5.1 VFO Mode
5.1.1 Receive
The VFO mode is the default mode of FDM-DUO. Each VFO memorize the tuning frequency, mode and
tuning step
5.1.1.1 Tuning
In this mode, use the Main Knob to tune a frequency.
A short pressure on the main knob enter the frequency step menu
Use the main knob to modify the tuning step, then with a short pressure return in the VFO menu.
With a long pressure over the main knob, the Digit by Digit Frequency tuning mode is activated
In this mode use the main knob to modify the selected digit and E1 or E2 to change witch digit you want
to modify. Apply a short pressure on main knob to return in the standard tuning mode.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
21
Page 22
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5.1.1.2 E1 Receiver Settings
Apply a short pressure on the E1 knob to change the E1 selected parameter, the selected parameter
icon is turned on in the LCD. Turn until one click the E1 knob to display the parameter value, then turn
again E1 to modify the parameter value.
SQL: if the Squelch is turned on the relative SQL icon blinks.
AGC: if the AGC is turned OFF (manual gain mode), the AGC icon blinks.
NR and NB: if the Noise Reducer or the Noise Blanker is turned on the relative NR or NB icon blinks.
5.1.1.3 E2 Receiver Settings
Apply a short pressure on the E2 knob to change the E2 selected parameter, turn until one click the E2
knob to display the parameter value, then turn again E2 to modify the parameter value.
RIT: if the RIT is turned on the relative RIT icon blinks, note that if the RIT is turned off the “Rit Value”
menu is not displayed. To modify the RIT value you have to use the E2 knob to change the selected digit
and press the key to change the digit selection. Keep press the key to reset the RIT value.
5.1.1.4 Switch VFO
Use the button to switch VFO-A/B.
5.1.1.5 Store VFO to Memory
Use the key to store the current VFO settings into a memory
Use E2 knob or main knob to select the destination memory and confirm with a short pressure on E2.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
22
Page 23
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
USB
CW
FM
AM
LSB
5.1.1.6 “QuickMem” Mode
Keep pressed the key to enter the “QuickMem” mode.
The memory channels 180 to 199 are reserved for the “QuickMem” selection. Keep pressed the key
until the desired frequency appears on the LCD display, then release the key and the current VFO is set
to the frequency and mode saved in the memory channel.
You can use the “FDM-DUO Manager” feature in the ELAD FDM-SW2 software to customize the memory
channels.
5.1.1.7 VFO-A = VFO-B
With long pressure on key you get VFO-A = VFO-B
5.1.1.8 Change Operating Mode
With a short pressure on the button, you can change the receiver mode between the available
modes:
5.1.1.9 “QuickStep”
With a short pressure on the key, the “QuickStep” function is activated. This function quickly sets
the frequency step preset selected in the “QuickStep” setting menu, press again the key to set the
previous frequency step.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
23
Page 24
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5.1.2 Transmit
During the transmission some operations like tuning, VFO selection, mode selection are locked. With a
short pressure on the E2 knob it is possible to change witch parameter is shown in the main display.
5.1.2.1 Transmission in CW Mode
CW Message
To begin transmit the CW message selected in the “CW message” menu (number 46), keep pressed the
microphone PTT and apply a short pressure on the CW key or paddle. Push the PTT to stop the CW
message transmission.
With a long pressure on or if the function has been activated in the “F4 Function” menu or in
the “F5 Function” menu, the selected CW message is transmitted. Press the or to stop the CW
message transmission.
E1 transmitter settings
Turn until one click the E1 knob to display the parameter value, then turn again E1 to modify the
parameter value. Apply a short pressure on the E1 knob to modify the parameter selection : “Reception
Volume” or “CW Words Per Minute”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
25
Page 26
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5.2 Split Functionality
Usually you can communicate with other stations using a single frequency for receiving and
transmitting. In this case, you select only one frequency on either VFO-A or VFO-B. However, there are
cases where you must select one frequency for receiving and a different frequency for transmitting. This
requires the use of 2 VFOs. This is referred to as “Split”.
To activate the Split, select the “Split” option in the F4 or the F5 settings menu, then apply a long
pressure on F4 or F5.
In Split the VFO-A is used to receive
The transmission frequency is set to the VFO-B frequency
Notes :
- when the split functionality is activated the "SP" letters appear above the letter of the VFO
(A or B),
- the split functionality is not available in MEM mode,
- when the split functionality is activated with the F4/F5 keys it is called stand-alone split, when
the split functionality is activated by the FDM-SW2 software it is called remote split,
- when the remote split is active you can change the mode and frequency of the VFO-B only with
the FDM-SW2 software, these parameters are then not settable from the FDM-DUO front panel.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
26
Page 27
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5.3 MEM Mode
To activate the memory mode, apply a long pressure on . In MEM mode it is possible to receive,
transmit and change the E1/E2 settings in the same way of the VFO mode.
5.3.1 Select and edit a memory
Use the main knob to select a memory. Apply a long pressure on the main encoder to enter the edit
memory menu. In this menu it is possible to modify the selected memory frequency in digit by digit
mode.
5.3.2 Delete a memory
Apply a long pressure to the key to enter the delete menu.
Use the E2 knob to set yes or no and make a short pressure on E2 to confirm.
5.3.3 Set memory to VFO
Use the button to select the VFO-A/B. Use the key to set in the selected VFO the selected
memory frequency and mode. When this function is used, the FDM-DUO automatically switches to the
VFO mode.
Sets the mute status during AM, FM
or SSB transmission
OFF or ON
ON
10
FILBYPASS
Sets the pre-selection filters bypass,
available only in reception in
remote/mixed mode and in split
OFF or ON
OFF
11
TONE VOL
Sidetone volume
From 0 to 100
5
12
SET CW MODE
Enables/disables the CW reverse
mode
YES or NO
NO
TRANSMISSION MENU
30
TX ENABLE
Enables the transmission
OFF or ON
ON
31
ANTENNAS
Number of antenna used
1 or 2
1
32
TX IN
Transmission input in AM, FM and
SSB. The TXIN setting is automatically
set to MIC if the PTT button is pressed
or USB if the CAT command TX is
received
Microphone, USB
soundcard, AUTO
Microphone
33
TXOUT
Transmission output selection
PWR (ant. RTX) or 0dBm
(RFOUT)
PWR
34
TX POWER
Transmission power selection
0.3W, 0.5W, 1W, 1.2W,
1.5W, 2W, 3W, 4W, 5W or
max available
5W
5.9 Settings Menu List
The following table describes the FDM-DUO settings menu list. To enter the settings menu mode, press
the key. Use E2 to select the menu, then apply a short pressure on E2 to display the current menu
setting, if you want to change the setting use the E2 knob and confirm the setting with a short pressure
on E2. In some menu you can also use the main knob to change the setting more quickly. To turn back or
exit the menu just press .
CW transmission input selection.
The Key+DTR option appears only
when the USB is connected and is
automatically disabled when the USB
is disconnected, re-setting the
selection to Key.
This is done to avoid unwanted TX
operations due to USB setup
transient phases.
Key, Paddle, Key+DTR,
Paddle+DTR
Key
38
CW DELAY
PTT release delay in CW
0 to 1000ms
240ms
39
CW KEY
Selects where the key is connected on
the key/paddle jack
TIP or RING
TIP
40
CW TIP
Selects the dot or dash on the tip of
the key/paddle jack
DOT or DASH
DASH
41
CW IAMBIC
Sets the iambic mode
A or B A 42
CW RX WPM
CW characters decoding speed
5 to 90 words per minute
12
43
TX RX TH
CW threshold for a tone recognition
AUTO or from 1 to 10
AUTO
44
CW DECODE
Enables/disables the automatic CW
decoding
OFF or ON
OFF
45
CW TX WPM
CW transmission speed
5 to 90 words per minute
10
46
CW MSG
CW message selection
Msg 1 to Msg 10
Msg 1
47
TX VIEW
Selects the default parameter to be
displayed during a transmission
Frequency, forward power,
reflected power, SWR
Forward power
48
UP/DOWN ACC
MIC UP / DOWN acceleration of the
microphone buttons
1, 2, 3
2
49
TUNE TIME
Antenna tuning mode timeout. Active
only if the selected transmission
output is the antenna. Not active in
service mode
3 to 120 seconds
10s
50
ATT ON TX
Attenuation in transmission mode
OFF or ON
OFF
51
NOISE TH
Sets the noise gate threshold.
Available only if TXIN is set to MIC
OFF,1,2,... 10
2
52
COMP GAIN
Sets dynamic compression gain.
Available only if TXIN is set to MIC
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
34
Page 35
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
5.9.1 Frequency visualization offset menu
The frequency visualization offset is helpful when using a transverter. The Frequency offset is set in digit
by digit mode with some improvements to set a signed 10 digit offset in a 9 digit display.
E2: Select the digit to modify
Main encoder: modify the selected digit value
E1: change the visualization
o kHz: the 8 most significant digit of the frequency offset are displayed
o Hz: the 9 least significant digit of the frequency offset are displayed
E1 or Main encoder short pressure: change the sign of the offset (+/-)
E2 short pressure: save the setting
EXAMPLES:
Frequency offset value: +10,000,034,120 Hz
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
35
Page 36
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
User action
Source
TX IN = MIC
TX IN = USB
TX IN = AUTO
PTT push on microphone
Microphone
TX USB port
Microphone
TX CAT command sending
Microphone
TX USB port
TX USB port
RTS signal assertion*
Microphone
TX USB port
TX USB port
5.10 Transmission source
The transmission source in AM, FM and SSB modes depends on the TX IN setting (menu 32) and on what
does the user. The table below shows the different possibilities.
* to use RTS as PTT, enable the functionality in the PTT menu (number 54).
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
36
Page 37
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
CAT
commands
Input
PC->FDM-DUO
SET
(sets a parameter)
READ
(reads a parameter)
Output
FDM-DUO->PC
ANSWER
(sends a parameter)
6 CAT Remote Control
6.1 General Specifications
The FDM-DUO transceiver uses a full-duplex, asynchronous, USB serial interface for communicating
through the USB CAT port. Each data is constructed with 1 start bit, 8 data bits, 1 stop bit, no parity is
used (8N1). The baud rate is selectable in the [70] CAT BAUD menu. Available values are 9600, 38400,
57600, 115200 bps.
The FDM-DUO implements proprietary commands and also a subset of the Kenwood TS-480 command
set. Some of those TS-480 commands have no effect on the transceiver, they only ensure the
compatibility of the FDM-DUO with Ham Radio Deluxe.
6.2 Commands Types
A CAT command is composed of an alphabetical part, various parameters and a terminator that signals
the end of the command. For example to set the VFO-A to 14MHz the command is: “FA00014000000;”
with :
To set the VFO-A to 14MHz the PC sends the SET command type “FA00014000000;”
To read the VFO-A frequency the PC sends the READ command type “FA;”, the ANSWER
response type is returned to the PC: “FA00014000000;”.
NOTE
Some particular rules about the CAT commands on the FDM-DUO :
not all the commands have the three types of command/response (SET, READ and ANSWER),
normally, send the SET command type will not cause the FDM-DUO to send the ANSWER
response type but if a command does not have a READ command type and has the SET and
ANSWER type, then send the SET command will cause the FDM-DUO to send the ANSWER
response type.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
39
Page 40
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
AX
Reads or sets the attenuator status during
transmission
Parameters:
P1
0: not active
1: active
Set
1 2 3 4 5 6 7 8 9
10
A X P1 ;
Read
1 2 3 4 5 6 7 8 9
10
A X ;
Answer
1 2 3 4 5 6 7 8 9
10
A X P1 ;
CG
Reads or sets the transmitter compression gain
Parameters:
P1: always 0
P2 compression gain value
000 : OFF
001 ~ 010 (active)
Set
1 2 3 4 5 6 7 8 9
10
C G P1
P2
P2
P2
;
Read
1 2 3 4 5 6 7 8 9
10
C G P1
;
Answer
1 2 3 4 5 6 7 8 9
10
C G P1
P2
P2
P2
;
CI
Reads/Sets CW input
Set not available during transmission
Parameters:
P1
0: key
1: paddle
Set
1 2 3 4 5 6 7 8 9
10
C I P1 ;
Read
1 2 3 4 5 6 7 8 9
10
C I ;
Answer
1 2 3 4 5 6 7 8 9
10
C I P1 ;
CM
Reads or sets CW messages
Set not available during transmission
Parameters:
P1
CW Message Index (0 To 9)
P2
CW Message text (ASCII)
Allowed characters are:
ABCDEFGHIJKLMNOPQRSTUVW
XYZ ‘ ‘(space) 0123456789! “ & ‘ ( ) + , - . / : = ? @ _
A fixed length of 32 is used for P2,
unused characters at the end of the
message must be ‘ ‘ (space).
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
42
Page 43
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
GS
Reads or sets the control gain settings
Parameters:
P1
0: auto (AGC)
1: manual
P2 for P1=’0’
0 : slow
1 : medium
2 : fast
P2 for P1=’1’
0 : OFF
1 a 10 : active
Set
1 2 3 4 5 6 7 8 9
10
G S P1
P2
P2
P2 ;
Read
1 2 3 4 5 6 7 8 9
10
G S P1 ;
Answer
1 2 3 4 5 6 7 8 9
10
G S P1
P2
P2
P2 ;
IF
Retrieves the transceiver status
Parameters:
P1: Frequency 11 digit
P2: 5 spaces
P3: RIT value in tens of hertz
P4: RIT state
0: OFF
1: ON
P5: Always 0
P6/P7: Memory ch. Number 0-199
P8: 0:Rx 1:Tx
P9: Operating Mode (See MD)
P10: See FR, FT
P11: Always 0
P12 0:Normal 1:Split
P13: Always 0
P14: Always 0
P15: Space
Set
Read
1 2 3 4 5 6 7 8 9
10
I F ;
Answer
1 2 3 4 5 6 7 8 9
10
I F P1
P1
P1
P1
P1
P1
P1
P1
11
12
13
14
15
16
17
18
19
20
P1
P1
P1
P2
P2
P2
P2
P2
P3
P3
21
22
23
24
25
26
27
28
29
30
P3
P3
P3
P4
P5
P6
P7
P7
P8
P9
31
32
33
34
35
36
37
38
39
40
P10
P11
P12
P13
P14
P14
P15 ;
IQ
Reads or sets the IQ transmission mode status. It is
necessary to send the “IQ1;”set command before
the end of the time out to maintain the IQ mode
active
Set available during transmission only to reset the time out
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
50
Page 51
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
SF
Reads or sets the SPF-08 board settings
Parameters:
P0: operation type
F: saves the filter settings with
parameters P2 to P5
N: disables the SPF-08
management (P2 to P5 are not
treated)
Y: enables the SPF-08
management(P2 to P5 are not
treated)
P1: SPF-08 management status
N: management disabled
Y: management enabled
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
72
Page 73
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2 USB driver
7.2.1 USB driver installation in Windows 8 and Windows 7
7.2.1.1 First driver installation
To install ELAD FDM-DUO driver, connect FDM-DUO USB RX port to a USB 2.0 socket on PC end power
on the device. When Windows detects the new hardware, follow the steps listed below to install driver
correctly:
Open Control Panel from Startmenu, select “System” and “Device Manager”. Expand “Other Devices”
node: FDM-DUO.
Select FDM-DUO, right click on it and execute “Update driver software”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
73
Page 74
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
When Windows starts the installation procedure, select the option “Browse my computer for driver
software” (the second option).
In the next dialog-box, insert the driver folder location using “Browse” button and check the option “Include subfolders”. In this way manual driver search is enabled
For 32 bit system select the folder: C:\Program Files\ELAD\ELAD FDM-SW2\ELAD_FDM_Driver
For 64 bit system select the folder: C:\Program Files (x86)\ ELAD\ELAD FDM-SW2\ELAD_FDM_DriverThen click “Next”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
75
Page 76
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.1.2 Driver installation verify
To verify FDM-DUO driver current version, connect the device to USB socket (where the device driver is
already installed) and power on the device. Then open Control Panel from Start menu. Click on
“System” and select “Device Manager”.
Expanding “ELAD Samplers” node, right click on “ELAD FDM-DUO” and select “Properties”.
When dialog box opens, select “Driver” label: you must read provider name, current driver release date
and current driver version. The figure shows an old FDM- DUO driver version.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
76
Page 77
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.1.3 Manual driver update
To update FDM-DUO driver, connect the device to USB RX socket (where the device driver is already
installed) and power on the device. Then open Control Panel from Startmenu. Click on “System” and
select “Device Manager”.
Under “ELAD samplers” list select “ELAD FDM-DUO”, right click on it and execute “Update driver”.
When Windows starts the installation procedure, select the last option “Browse my computer for driver
software”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
77
Page 78
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
In the next dialog-box, disable the option “Include subfolders” and choose “Let me pick from a list of
device drivers on my computer”. Don’t click “Next”.
Verify that “Show compatible hardware” option is checked and ELAD FDM-DUO is selected: then click on“Have a Disk”. In this way the manual driver update is enabled. Don’t click “Next”.
Click on “Browse” and search for FDM-DUO driver update folder location; then open
winusb_fdmsampler.inf file. Click “OK” and then “Next”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
78
Page 79
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Let the hardware installation automatically completes and, at the procedure ending, click on “Close”;
then disconnect and connect FDM-DUO device on the same USB socket.
To verify that a correct update is done, enter “Device Manager” in Control Panel; under “ELAD samplers”
label select ELAD FDM-DUO driver (see sub-chapter Driver installation verify in Windows 8 and Windows
7): right click on it and choose “Properties”: select “Driver” label to visualize the last driver version (an
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
79
Page 80
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.2 USB driver installation in Windows XP
7.2.2.1 First driver installation
To install ELAD FDM-DUO driver, connect FDM-DUO USB RX port to a USB 2.0 socket on PC and power
on the device. Windows XP detects the new hardware and starts the hardware installation wizard. Then,
next steps to install FDM-DUO driver are listed below:
At the first dialog box, select the last option “No, not this time” and “Next”.
Select “Install from a list or specific location (Advanced)” and “Next”.
In the next dialog-box, check the options “Search for the best driver in these location” and “Include this location in the search” to enable manual driversearch. Clicking on “Browse”, select the path where the
driver folder is located: Local Drive (C:) \Programs\ELAD\ELAD FDM-SW2\ELAD_FDM_Driver. Then click “Next”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
81
Page 82
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.2.2 Driver installation verify
To verify FDM-DUO driver current version, connect the device to USB socket (where the device driver is
already installed) and open Control Panel from Startmenu. Click on “System” and select “Device
Manager” under “Hardware” label.
Expanding “ELAD Samplers” node, right click on “ELAD FDM-DUO” and select “Properties”.
When dialog box opens, select “Driver” label: you must read provider name, current driver release date
and current driver version. The old ELAD FDM-DUO driver version is shown in figure below as example.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
82
Page 83
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.2.3 Manual driver update
To update FDM-DUO driver, connect the device to USB socket (where the device driver is already
installed) and power on the device. Then open Control Panel from Startmenu. Click on “System” and
select “Device Manager” under “Hardware” label.
Select “ELAD FDM-DUO” from “ELAD Samplers” list, right click on it and execute “Update driver ”
Now Windows XP launches the hardware update wizard: select the last option “No, not this time” and
“Next”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
85
Page 86
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
To verify that a correct update is done, enter “Device Manager” from Control Panel; under “ELAD
Samplers” list, select ELAD FDM-DUO driver (see chapter Driver installation verify in Windows Xp) right
click on it and choose “Properties”. Select “Driver” label to visualize the last driver version (an example is
depicted in figure below).
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
86
Page 87
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
7.2.3 USB sound card
Connect the TX USB port of FDM-DUO to a USB 2.0 port of the PC and power on the device. Then open
the PC device manager. No driver installation is required for this device, just expand the node Audio
inputs and outputs and check the FDM-DUO audio device.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
88
Page 89
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
8 Firmware update
This section describes how to update the various firmware of the FDM-DUO. The latest firmware
versions are available here: http://sdr.eladit.com/FDM-DUO/Firmware Releases/.
TO FACILITATE THE PROCEDURE, PLEASE UPDATE THE USER INTERFACE (UI) FIRMWARE AFTER DOING
THE OTHERS FIRMWARE UPDATES
8.1 RX and TX firmware update
To update the RX and TX firmware, you must remove the FDM-DUO top cover. Remove the four screws
in the FDM-DUO chassis bottom as shown in the figure below.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
89
Page 90
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
8.1.1 RX firmware update
First of all, download the latest version of the RX firmware. Unzip the archive and copy the file
“fdmduorx.bin” in the USB flash drive provided with the FDM-DUO. If the file already exists, replace it.
The file “fdmduorx.bin” must be in the root of the USB flash drive. For example : “E:\fdmduorx.bin”.
Connect the provided USB flash drive to the FDM-DUO “RX USB PROGRAMMING PORT” using the
provided micro-USB adapter. See the picture below. Connect the power supply, keep pressed the “RX
PROGRAM MODE BUTTON” and power up the FDM-DUO.
Keep pressed the “RX PROGRAM MODE BUTTON” until the “RED LED” turns on.
Release the “RX PROGRAM MODE BUTTON”.
Wait until the “RED LED” turns off.
Turn off the FDM-DUO, disconnect the USB flash drive and power up the FDM-DUO.
If during the firmware update the “GREEN LEDS” are blinking together quickly, it means that the
update process ended not successfully. In this case contact the ELAD technical assistance.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
90
Page 91
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
8.1.2 TX firmware update
First of all, download the latest version of the TX firmware. Unzip the archive and copy the file
“fdmduotx.bin” in the USB flash drive provided with the FDM-DUO. If the file already exists, replace it.
The file “fdmduotx.bin” must be in the root of the USB flash drive. For example : “E:\fdmduotx.bin”.
Connect the provided USB flash drive to the FDM-DUO “TX USB PROGRAMMING PORT” using the
provided micro-USB adapter. See the picture below. Connect the power supply, keep pressed the “TX
PROGRAM MODE BUTTON” and power up the FDM-DUO.
Keep pressed the “TX PROGRAM MODE BUTTON” until the “RED LED” turns on.
Release the “TX PROGRAM MODE BUTTON”.
Wait until the “RED LED” turns off.
Turn off the FDM-DUO, disconnect the USB flash drive and power up the FDM-DUO.
If during the firmware update the “GREEN LEDS” are blinking together quickly, it means that the
update process ended not successfully. In this case contact the ELAD technical assistance.
Before starting the firmware update, disable all anti-virus programs to avoid any inconvenience.
Turn on the FDM-DUO and connect the USB RX connector to a USB 2.0 port of your computer. Unzip the
archive, launch the executable file inside and follow the instructions to update the firmware.
Do not disconnect the USB cable and do not turn off the FDM-DUO.
Once the update is completed, turn off and on the FDM-DUO.
8.3 FPGA firmware update
Download the latest version of the FPGA firmware.
Before starting the firmware update, disable all anti-virus programs to avoid any inconvenience.
Turn on the FDM-DUO and connect the USB RX connector to a USB 2.0 port of your computer. Unzip the
archive, launch the executable file inside and follow the instructions to update the firmware.
Do not disconnect the USB cable and do not turn off the FDM-DUO.
Once the update is completed, turn off and on the FDM-DUO.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
92
Page 93
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
8.4 User interface (UI) firmware update
Download the latest version of the user interface firmware.
Before starting the firmware update, it is recommended to disable all antivirus programs in order to
avoid any inconvenience.
In order to update the user interface firmware, you need to install the Flash Magic software. This
program is available here: http://www.flashmagictool.com/
Turn on the FDM-DUO and connect the CAT USB port to a USB 2.0 port of your computer. Follow the
steps below to enable the user interface reprogramming mode :
Press the key, turn the E2 knob to go to the menu 80 (SERVICE), press E2 to enter in the
menu,
turn E2 to display “ON” and press E2 to confirm,
turn E2 to go to the menu 82 (UI Update), press E2 to enter in the menu,
turn E2 to display “YES” and press E2 to confirm.
Then you need to identify the CAT USB port number. Open the windows “Device Manager” and expand
the “Ports (COM &LPT)”node. The CAT USB port is listed as “USB Serial Port”.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
93
Page 94
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Run Flash Magic and set the following parameters.
In the “Step 1 –Communication” section:
Select LPC1766,
COM Port: the CAT USB COM port,
Baud Rate: 230400,
Interface: None (ISP).
In the “Step 2 – Erase” section:
Check “Erase all Flash+Code Rd Prot”.
In the “Step 3 – Hex File” section:
Click on Browse and select the update “.hex” file.
In the “Step 4 – Options” section:
Check “Verify after programming.
Check the communication with the FDM-DUO clicking on “ISP” and then on “Read Device Signature”. If
the communication with the FDM-DUO is working, a new window with some device information is
opened.
If the communication is working it is possible to proceed with the firmware update. Click on “close” on
the “Device Signature” window. In the Flash Magic main window, click on “Start” to begin the
programming.
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
95
Page 96
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
ELAD FDM-DUO TECHNICAL SPECIFICATIONS
GENERAL
USB 2.0 Ports (Peripheral Control)
3 (RX, TX, CAT)
Master Clock Frequency
122.88 MHz (Rx), 368.64 MHz (Tx)
Master Clock Phase Noise
-136 dBc @ 100 kHz, -130 dBc @ 10 kHz
10 MHz Reference Clock Stability
2.5 ppm TCXO within temperature range 0°C ÷ 40°C (32°F ÷ 104°F)
Typical Stability within temperature range 15°C ÷ 35°C (59°F ÷ 95°F) 0.1 ppm i. e. 1Hz @ 10 MHz
Frequency Resolution
1 Hz min.
Antenna Connectors / Impedance
2x SO-239 / 50 Ohm
RF-OUT Connector / Impedance
SMA female / 50 Ohm
Power Supply Requirements
13.8 Vdc ± 10%
Current Drain (Rx / Tx 5 W)
<500 mA @ 13.8 V / <2.2 A @ 13.8 V
Dimensions (W x D x H)
180 mm (7.00") x 155 mm (6.10") x 70 mm (2.75") including knob a nd connectors
180 mm (7.00") x 130 mm (5.10") x 70 mm (2.75") enclosure only
4 with 1 Channel (Slice) DDC, 8 with 2 Channels (Slices) DDC
Software Defined Filters
Double IF Notch Filters, Continuous Variable Band Filter
Advanced DSP Features
Noise Blanker, Adaptive Noise Reducer, Adaptive Auto Notch, AGC
Main Software Features
Recording and playback of IF and audio data stream, EIBI database support, Dx-Cluster spot vi sualization
(Internet connection required), built in CAT protocol and Omni-Rig S erver, double output channel (for VAC),
support for external down-converter, WoodBox Tmate and Tmate2 compatibility
Software Visualization
Input Data (Spectrum + Waterfall), IF Data (Spectrum + Waterfall), Audio Data (Spectru m + Waterfall)
TRANSMITTER
Modes
CW, USB, LSB, AM, FM, IQ
Transmit Bandwidth
CW, USB, LSB, AM: default 300 ÷ 2700 Hz, up to 50 ÷ 4000 Hz
FM: 2500 or 5000 Hz Low Pass
Advanced DSP Features
Equalizer, VOX, Audio Compressor, Overshoot Control (CESSB Algorithm), L evel Limiter
by any means, electronic, photocopying or otherwise, without prior written permission of ELAD S.r.l.
97
Page 98
ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
Declaration of Conformity (FCC)
The product marked as
FDM-DUO
manufactured by
Manufacturer: ELAD S.r.l.
Address: Via Col De Rust, 11 - Sarone
33070 CANEVA (PN)
complies with the following requirements:
- FCC (Federal Communications Commission) Part 15
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modification not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
FCC ID: 2AAE5FDM-DUO
This product is distributed in USA by:
ELAD USA Inc.
7074 N RIDGE BLVD APT 3E
CHICAGO , IL 606453586
USA