WR G315 | WiNRADiO

WiNRADiO » WR-G315

Double-conversion PC controlled receiver with last IF in digital technology (Software Defined Radio). All-mode, frequency range 0.009-1800 MHz expansible up to 3500 or 8599 MHz with optional downconverter. Ideated in USA.

Reference market : ham-radio

General :
Frequency coverage 0.0090 ~ 1800.0000 MHz
1800.0000 ~ 3500.0000 MHz [1]
1800.0000 ~ 8599.0000 MHz [1]
Modulation mode CW / LSB / USB / AM / AM-S / ISB / FM / WFM [2] / DRM [3]
Tuning step 1 Hz min
Receiver :
Sensitivity CW 0.69 uV (0.01 MHz, 10dB S/N)
0.35 uV (0.025 MHz, 10dB S/N)
0.28 uV (0.05 MHz, 10dB S/N)
0.14 uV (0.1 MHz, 10dB S/N)
0.11 uV (0.15~500 MHz, 10dB S/N)
0.18 uV (500~1800 MHz, 10dB S/N)
SSB 0.25 uV (0.15~500 MHz, 10dB S/N)
0.40 uV (500~1800 MHz, 10dB S/N)
AM 0.89 uV (0.15~500 MHz, 10dB S/N)
1.40 uV (500~1800 MHz, 10dB S/N)
FM 0.5 uV (0.15~500 MHz, 12 dB SINAD)
0.8 uV (500~1800 MHz, 12 dB SINAD)
WFM 1.4 uV (0.15~500 MHz, 12 dB SINAD)
1.8 uV (500~1800 MHz, 12 dB SINAD)
MDS (Minimum Detectable Signal) -135 dBm
Selectivity CW/SSB/AM/FM 0.05 ~ 15 KHz user-defined [4]
WFM 230 KHz (-6dB)
Dynamic range 90 dB
IP3 (3rd order intercept point) 0 dBm
Image rejection 60 dB (2~100 MHz)
50 dB (100~1000 MHz)
Frequency stability ± 0.5ppm with temperature from 0°C to +60°C
Frequency accuracy ± 1ppm at +25°C
Intermediate frequency 109.65 MHz
16 KHz
Features :
Memory Unlimited memory channels
Antenna SMA 50Ω connector [5]
Power supply External
Connections USB
Mechanical and environmental data :
Dimensions 165 (W) x 41 (H) x 97 (D) mm
Weight 430g

[1] With optional downconverter Antenna Multiplexer and Frequency Extender (AMFE)
[2] Wide-band FM mode with option Wide-FM
[3] DRM mode optional
[4] With 1 Hz steps
[5] SMA / BNC adapter provided

Description :

The WR-G315 is an SDR receiver for HF, VHF and UHF. The basic version covers up to 1800 MHz extensible to 3500 or 8599 MHz via an optional module, with this addition the WiNRADiO is one of the few models that comes to tune up to the SHF band. The primary characteristic is the good sensitivity that is kept practically stable with respect to the frequency along many orders of magnitude. The S-meter tool (RSSI) also offers a high accuracy, the error is typically within 2 dB, with the indication made usable as well as in standard S points also in dBm and uV choose whether to measure the peak value, RMS, or still averaged defining the time constant. The receiver has a circuit with mixed architecture. Analogous in the two frequency conversions, the first uses a 20 KHz wide quartz roofing filter composed of two 4-pole cells, subsequently digital integrating a dedicated DSP in the hardware to define the filtering of the signals and their demodulation. The computer by means of the software implements further processing and controls, the squelch, for example, can be set on the RF level; the audio component; the call tone CTCSS or DCS.

The bandwidth on digital IF filters is adjustable in 1 Hz steps over the entire 50 ~ 15000 Hz range, thus covering all the listening needs in the various modulations. Spectrum analysis operates in real time on 20 KHz wide showing the signal components with a resolution of 16 Hz. The 20 KHz segment of the digitized IF can be recorded on the PC to be reproduced at another time by freely setting selectivity, mode, notch filter, noise-blanker (NB). The software also allows to measure an entire set of parameters on the tuned channel such as the depth of modulation in the AM, the frequency deviation in the FM, the distortion and the SINAD, finally the spectrum demodulated audio with a resolution of 5 Hz. In addition to the narrowband spectrum analysis there is also the function of panoramic analysis that incorporates display utilities such as the ability to present the curves of minimum and maximum activity or the automatic survey to find the radio emission peaks.

Performance and practical notes :

The radio is available in two versions, the WR-G315e (editor's note: here described and visible in the image) is a module to be connected via USB to a computer while the WR-G315i is developed in a PCI bus card. The electrical and operational characteristics do not differ. Requirements for the PC are a 500 MHz Pentium CPU or higher and Windows XP or later operating system. As you can see, the receiver also works in combination with a dated computer or in any case with modest computing resources.

Review :

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