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Elad FDM-DUO - 5W - Multi use SDR Transceiver

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    5. Elad FDM-DUO - 5W - Multi use SDR Transceiver
Elad FDMDuo SDR FDM-Duo
Elad FDMDuo SDR FDM-Duo
Elad FDMDuo SDR FDM-Duo
Elad FDMDuo SDR FDM-Duo
Elad FDMDuo SDR FDM-Duo
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Elad FDM DUO - 5W - Multi use SDR Transceiver
Elad FDMDuo SDR FDM-Duo
Elad FDM-DUO - 5W - Multi use SDR Transceiver
Elad FDM-DUO - 5W - Multi use SDR Transceiver
Elad FDM-DUO - 5W - Multi use SDR Transceiver
Elad FDM-DUO - 5W - Multi use SDR Transceiver
(3 reviews)Write a review
Part Number: ELAD FDM-DUO
RRP: £ 1199.94
£974.95 ( £812.46 EXC. VAT )
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£11.95
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Product Information
  • Overview
  • Stand Alone Specifications
  • PC mode operation with FDM-SW2 software
  • Stand Alone Modes
  • PC and Mixed Modes
  • Customer Reviews



The FDM-DUO is a game-changer - a top-end SDR with dials and knobs!  

This transceiver has a 5W output that can operate as a stand-alone unit, without a PC!

The small transceiver is equipped with the latest SDR technology: A fast analog-digital-converter samples the received HF directly into digital signals and a downstream DSP module provides for filtering and processing. Another ARM processor handles the signals of the control unit.

One highlight of the FDM-DUO is the possibility to use it standalone without a computer also. Then, this transceiver is a perfect companion for the QRP fan, so that you can have a modern SDR with you even on holidays. The controls are very easy to use for a portable QRP transceiver. In addition to a big VFO knob there are two smaller knobs for volume and filter-center/width (amongst others). Six buttons below the well readable LC-display access the most important functions directly. Less frequently used settings are available via menu system.

Connected to a PC, FDM-DUO is a very modern SDR receiver and transmitter with capabilities which are usually available in very large large radios only.

The device receives from 10 KHz to 54 MHz. A 16-bit ADC with 122 MHz sampling rate is built-in. Receive modes are: SSB, CW, AM (incl. Sync-AM), FM, WFM (incl. Stereo and RDS!), RTTY and DRM. The transmitter has 5W output power, alternatively a HF output jack with 0 dBm output.

Together with a computer the possibilities for the FDM-DUO are extended quite considerably of course. Three(!) USB 2.0 interfaces offer a wide range of possibilities. One interfaces works as a CAT controller, another one provides digital I/Q data for the waterfall diagram, and the third USB port serves as a external sound card for the PC! This way the FDM-DUO can be used for digital modes such as RTTY, PSK31 etc. By distributing these functions to three separate USB interfaces the handling for the user is made much easier, in most cases no additional USB drivers are required.

The FDM-DUO has two configurable antenna jacks: RX/TX on the same jack, or RX and TX on one jack each.

DOWNLOAD USER MANUAL HERE


FDM-DUO is a SDR tranceiver that offers the possibility to operate STand-alone like traditional radio or attached to a Personal Computer discovering the possibilites offered by the SDR technologies.
 
Stand-alone Specifications updated 6 June 2014
 
RX:
 
Freqency range: 10KHz - 54MHz
 
Direct sampling receiver operating @ 122.88MHz ADC: LTC2165 16bit
 
DDC (Digital Down Converter) FPGA Xilinx Spartan.6 family down to 192Ksps
 
DDC, Filter & Demodulator ARM STM32F429 floating point microcontroller
 
Demodulation CW, LSB, USB, AM
 
LSB,USB Filters selectable 1600-3100Hz Bandwitdh with 100Hz step plus 4000-5000-6000 Hz Bandwitch
 
AM Filter selectable from 2500 to 6000Hz with 500Hz step
 
CW Filters 2600Hz-1500-1000-500-300-100Hz Bw plus 4 Cw peak filters applied after 100Hz Bw to obtain an overall filter of 20Hz Bw
 
Noise Reduction  10 levels
 
Noise Blanker 10 leves
 
VFO A, VFO B, 199 MEMORIES with Frequency/ Alphanumeric label visualization, programmable by FDM-SW2 memory manager
 
Programmable BAND selections: selectable up to  20 quick recallable memories from 180 to 199
 
 
TX:
 
DDS AD9957  with 368.64 MHz clock
 
Microphone input ADC 48KHz @16bit selectable gain -12dB to +12dB
 
Key and Paddle input for CW operation (Iambic A e Iambic B selectable)
 
5W min power output from 160m to 6m, 8 W typ output @14MHz
 
PTT Output connector to drive external amplifiers
 
 
GENERAL:
 
All programmable components (ARM RX, ARM TX, Flash for FPGA, User Interface microcontroller and USB controller) are firmware upgradable
 
CAT input USB control interface with FTDI controller
 
Antenna connectors: RTX SO-239, RX SO-239
 
Monitor output: 0dBm SMA to be used as test equipment allow the use  as a Digital RF Generator
 
LCD Backlight RGB programmable, depending on function can change the colour (RX, TX , PC remote control)
 
10MHz Reference input connector: SMA
 
Power supply: 2.1mm DC Plug 13.8VDC RX consumption 500mA typ (13.8V) TX: tbd
 
Size: Witdh 180mm (7.00") x Depth 155mm (6.10") including Knob and connectors or 130mm (5.10") only enclosure  x Height 70mm (2.75")
 
Weight: 1.2Kg (2.4 lb), shipment package 2.2Kg (4.85 lb)
 
 
PC mode operation with FDM-SW2 software specifications updated 6 June 2014
 
Up to 9 simultaneous receivers combination ( 1 on center frequency stand alone, 4 FDM-SW2 in fist 192kHz channel and 4 in the second 192kHz channel
 
Each receiver on FDM-SW2 have a dedicated Audio Channel and a dedicated CAT to be usable from external application with Visrtual serial ports and Virtual Audio Cables
 
Selectable Band configuration from 192kHz to 6MHz DDC bandwith  (192,384,768,1546,3072,6144Ksps) 2 channel 192Ksps, 2 channels 384Ksps
 
RX and TX SPLIT mode operation:  VFO A for RX while VFO B used for TX (with FDM-SW2 simple click operation to change TX frequency)
 
CW skimmer integration management (DX Spot visualization & tuning capability)
 
Direct digital Modulation using USB soundcard based on CMedia chipset digitally interfaced with ARM floating point microcontroller and DDS

 

Up to 9 simultaneous receivers combination ( 1 on center frequency stand alone, 4 FDM-SW2 in fist 192kHz channel and 4 in the second 192kHz channel

Each receiver on FDM-SW2 have a dedicated Audio Channel and a dedicated CAT to be usable from external application with Visrtual serial ports and Virtual Audio Cables

Selectable Band configuration from 192kHz to 6MHz DDC bandwith  (192,384,768,1546,3072,6144Ksps) 2 channel 192Ksps, 2 channels 384Ksps

RX and TX SPLIT mode operation:  VFO A for RX while VFO B used for TX (with FDM-SW2 simple click operation to change TX frequency)

CW skimmer integration management (DX Spot visualization & tuning capability)

Direct digital Modulation using USB soundcard based on CMedia chipset digitally interfaced with ARM floating point microcontroller and DDS

(3 reviews)Write a review
Amazing Little Radio
George|20-08-2020
Having explored the potential of an SDR receiver by running the SDRPlay RSP1a as a band monitor through my FTDX3000, I wanted to try upgrading to the full transceiver experience within a reasonable budget. The little FDM Duo fitted the bill perfectly and also provided me with a portable stand alone QRP rig. I have to say that this radio is simply amazing and is (In my opinion) superior in RX performance to the FTDX3000. I’ve used it mainly on evening CW nets on 80m where for inter-G working, signal strength can be challenging. The visual resolution on scope display and waterfall when used with a PC is much better than the RSP1a, which is no slouch when it comes to an SDR receiver. Installation of the software needed a little more effort but the ELAD website has everything you need to complete this, and it installed on the latest version of Windows 10 Pro 64 bit with no issues, although the a software could probably do with an update (last issue was late 2019). In use the little Duo is simplicity itself - very easy menu systems and an adequate manual are more than enough to get you started. Downsides? Well only minor niggles really - the tuning knob feels a little flimsy, and the tiny dimple for your fingertip didn’t fit my sausage fingers, but otherwise very few. I’ve since paired this up with the matching ELAD Duo ART 120W amplifier and display unit, and I can honestly say it’s a match made in heaven. Perfect integration and well worth the money. If you want a top notch SDR transceiver, where a PC can be used to full effect in signal processing, it’s hard to find anything to match this radio for the money.
Elad FDM-DUO
Michael|11-07-2020
I just got this having read good reviews of it and am not disappointed. The packaging is a little unimpressive so I would recommend collecting it in person. The manual is out of date and only describes installation of software etc, for Windows 7, 8 and XP so really needs updating. The manual does not really cover everything in detail. However, once you sort out the software and get it loaded onto your pc the results are very good indeed. I really like it and it is very impressive and managed to get it working with all my software for FT8, PSK, Hell and SSTV so it sort of does it all very well. I would highly recommend this little rig if you want to have some fun.
The way forward
Chris|13-04-2017
This little radio is pretty much perfect. Not much bigger than the venerable FT-817, yet superior to most radios with a clean big sound and all the benefits of SDR. Standalone it is a brilliant well thought through design. I couple mine to a 100w amp (soon to be 250w) and it works seamlessly. It is far and away the best sounding radio I have ever owned. However that is only one side of th story, as the DUO can if you wish, be simultaneously connected to your PC too and work as an 8 receiver setup with loads more DSP done in the PC. It's a great introduction to how superior SDR is that I bought a second to take out portable and on holiday! It would be easy to give up on it while you learn how the software works, but just persevere and join the Yahoo group and you soon learn a lot. Now my shack is a fraction of the size it was, but sounds better than ever. Just invest in a big hi-res screen (or 2!) and a decent pair of computer speakers to really get the best out of it. Honestly I've never been as happy with a radio in nearly 30 years of being in the hobby. It's like someone switched the light on! And needless to say, the service from MLS is second to none. Thanks for making this amazing box of tricks available to UK hams, lads.
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