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

Elad FDM-DUO - 5W - Multi use SDR Transceiver
RRP: £ 949.95
£949.95 ( £791.63 EXC. VAT )
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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
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DOWNLOAD QUICK START GUIDE
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DOWNLOAD PRODUCT LEAFLET
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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

(1 reviews)Write a review
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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