FDM-S2 SDR Receiver by ELAD

FDM-S2 is a 16-bit Direct Sampling Receiver covering 9 kHz - 52 MHz HF and 135 MHz - 160 MHz VHF Band


Elad LogoDirect sampling receiver based on 122.88MHz 16bit single channel ADC converter covering HF 6m and offering the possbility to exploiting the undersamplig mode covering FM Broadcasting Band and exploring part of VHF Band (135-160)MHz.

ELAD FDM-S2 Ranges and specs:

  • HF: 9kHz-52MHz MDS: -132dBm @14MHz, Clipping lev -8dBm
  • FM: 74-108MHz sensitivity <2uV 12dB SINAD @98MHz, Clip lev -3dBm
  • VHF: 135-160MHz MDS -137dBm @145MHz, Clipping level -19dBm
  • Separate antenna inputs for HF/6m and FM/VHF/Bypass ranges
  • Max. DDC Bw 6144kHz (Aliasing free viewable bandwidth up to 5 Megahertz)

Currently available selectable bitstreams:
192ksps-32bit, 384ksps-32bit, 768ksps-32bit, 1536ksps-32bit, 3072ksps-32bit, 6144ksps-16bit

Special double DDC mode of 2 x 384kHz bandwidth to be placed within one of the input ranges.

4 virtual receivers freely tunable within DDC window

Each virtual receiver holds settings for mode,bandwidth,volume,squelch and audio output routing.

ELAD S2Patent pending Triple Tuning Bar for coarse and fine spectrum navigation


Interference rejection: Noise Blanker,Adaptive Noise Reduction and auto notch, special 2 manual notches (directly placed in DDC spectrum)

Integrated DRM decoding, text and station schedule update.

Integrated WFM Stereo with RDS decoding.

Universal CAT control and  OmniRig(tm) integration

Customizable IF panadapter facilities for integration with existing transceiver/receivers

User definable bandplan, specified settings per frequency range.

XML based memory management

DX cluster data integration and EIBI database import

Plotting of memory, database and cluster information directly on spectrum screen

Proprietary Ext IO bus for accessory equipment, also offering 8 DC lines for universal switching (*via SFE1.0 board)

Supported by 3rd party software: SDR-RadioV2 , Winrad, HDSDR, Studio 1

DDC Spectrum recorder with automated timeschedule control

Seperate IF/AF spectrum windows for detailed signal analysis

Easy, fully informative User Interface with deep customization

Resizable windows and multi-monitor support

Wideband secondary Audio/IF outputs for decoder software (eg CW Skimmer,WeatherFax)

Full integration of the Tmate(tm) series controllers

Compact size 110 (W) x 90 (D) x 40 (H) mm and 360g, come with 2 BNC to SMA adapters, USB cable, USB double cable adapter, CD and safe bag.


ELAD S2-rear
ELAD S2-rear
DSP Unit

ELAD S2 Software

Some ELAD S2 Videos on Youtube

Editor's rating
Previous articleAmateur Radio News 07 2019
Next articleBitcoin Sent Through Amateur Radio 40 Meters Band
The DXZone merges amateur radio and Internet, since early internet days. Established in 1996 as a radio-related-mailinglist, has registered its domain name in 1998. Main goal is to review and promote ham-radio web sites, classifying them in categories. The DXZone is managed by ham radio operators with ham radio operators in mind.
fdm-s2-sdr-receiver-by-eladThe Elad FDM-S2 is a PC controlled direct sampling SDR receiver, released on 2014, capable to receive in a wide frequency Range with excellent performances, with a medium range market price.

Leave your Comment

Please enter your comment!
Please enter your name here