WinRadio WR-G31DDC Excalibur SDR 9 KHz - 50 MHz DX Performance Radio Receiver

Description

This sale is for one of WinRadio's premier SDR receivers the G31DDC Excalibur.  This Excalibur appears to be in very nice condition and we ask that you please look at our pictures for verification of cosmetics.
Operationally the receiver was tested and it worked perfectly with no issues or shortcomings.
Included in this sale are the G31DDC receiver in the original factory box and the following:
original user manual (has light yellowing from age)
DRM demodulator option on a CD
proprietary USB communication cable
SMB to BNC antenna cable connector
low noise AC adapter
8 page review by Jack Weber
Monitoring Times review First Look - Nov 2010
QST review - Jan 2012 (QST is an Amateur Radio publication)
Peter Hart's RadCom review - Oct 2010
RadioUser review - Aug 2010
SWLing Post review 10 pages
disc that has the latest WinRadio operational software and PDF copies of the reviews of this receiver
The information below was obtained from WinRadio's website which offered a detailed description of this receiver.  Suggested retail price for a new unit is 9.50 plus shipping and so this is your opportunity to acquire this receiver for a nice savings over "new" price.
We ask that you please research the processing requirements of this receiver to verify that your personal computer offers the proper processing power to operate the receiver without stutters or snags.  Most current computers have plenty of RAM and CPU processing power.
Overview
The award-winning WiNRADiO WR-G31DDC
'EXCALIBUR'
is a high-performance, low-cost, direct-sampling, software-defined, shortwave receiver with a frequency range from 9 kHz to 50 MHz.  It includes a
real-time
50 MHz-wide spectrum analyzer and 2 MHz-wide instantaneous bandwidth available for recording, demodulation and further digital processing.
The receiver's superior performance results from its innovative, direct-sampling, digital down-converter architecture along with the use of leading-edge components and design concepts.  These all result in a very high IP3, wide dynamic range, excellent sensitivity, selectivity and tuning accuracy.  These key features create a receiver in a class of its own, with wide application potential, at a very affordable price.
Features
9 kHz to 49.995 MHz continuous frequency range
Direct sampling
Digital down-conversion
16-bit 100 MSPS A/D conversion
50 MHz-wide, real-time spectrum analyzer
2 MHz recording and processing bandwidth
Three parallel demodulator channels
Waterfall display functions
Audio spectrum analyzer
Audio and IF recording and playback
Recording with pre-buffering
EIBI, HFCC and user frequency databases support
Very high IP3 (+31 dBm)
Excellent sensitivity (0.35 µV SSB, 0.16 µV CW)
Excellent dynamic range (107 dB typ.)
Selectable medium-wave filter
USB 2.0 interface
The receiver's robust front-end is equipped with an ultra-high-linearity amplifier which results in exceptional strong-signal performance. An advanced dithering technique eliminates spurious signals without significantly increasing the receiver's noise floor. The superior 16-bit 100 MSPS analog-to-digital converter provides exceptional performance over an extremely wide range of signals.
The entire 2 MHz DDC (digitally-down-converted) bandwidth is available for recording and demodulation. Three demodulators allow the simultaneous reception of three signal frequencies within the 2 MHz bandwidth.
The WR-G31DDC software provides an elegant and logical graphical user interface. There are several spectrum analyzer configurations including the 50 MHz full span with 1.5 kHz resolution. The fully-zoomable display can be viewed in either the standard or waterfall mode.
The down-converted portion is highlighted and can be selected either via keyboard or by the mouse cursor and then displayed in another window, within which three independent receiver channels can exist. For any channel, the receiver's selectivity, IF shift, passband tuning, notch, and other functions can be adjusted, and the audio spectrum of the demodulated signal can be observed.
In spite of the receiver's ground-breaking architecture, the software still remains simple and intuitive to use, containing all the features generally expected in modern receivers such as noise blanking, memories, scheduler, squelch (level, voice or noise activated), numerous tuning options, and a wide choice of demodulation modes, including user-defined and optional DRM.
The digital down-converter provides 21 selectable output bandwidths ranging from 20 kHz to 2 MHz. The receiver's selectivity can be adjusted with 1 Hz resolution. The bandpass audio filter's low and high cut-off frequencies are graphically adjustable, as is the notch filter and noise blanker.
The parameters of all three independent channels can be set separately, allowing each to be recorded simultaneously and independently. Recording and playback are also provided at the output of the digital down-converter, where an entire 2 MHz spectrum band can be recorded for later demodulation. Pre-buffering prevents signal loss at the start of a transmission.
A flexible scheduler function allows unattended recording of each channel at specified dates and times, and the built-in support for HFCC, EIBI and user-defined frequency databases ensures effortless storage and maintenance of frequencies.
The software-defined architecture allows easy software upgrades for demodulation and decoding requirements. Component variations and aging are greatly diminished in a software-defined receiver, assuring long-term premium performance.
If you would like to read an excellent review of this receiver, Bob Grove printed one such review in Monitoring Times back in 2010 which you can access here:
http://www.monitoringtimes.com/1110first.pdf
(please copy and paste this link into your internet browser)
Please use the Ebay shipping calculator to determine your shipping cost.  This cost includes proper packing materials for safe delivery and insurance cost against damage or loss.
Those buyers living outside the USA are also welcome to purchase from us.  We have shipped to 105 countries during the past 22 years on Ebay and we are happy to ship virtually anywhere in the world.  You may use the shipping calculator to determine your shipping cost.
Please keep in mind that this cost does not include any import, customs, or VAT fees.  If you are uncertain of these costs, we ask you to check with your local post office prior to making a purchase from us.  Thank you!
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