| Receiver type |
DDS-based dual-conversion superheterodyne with software-defined last IF stage
and demodulator |
| Frequency range |
9 kHz - 30 MHz |
| Tuning resolution |
1 Hz |
| Mode
(See Note 1.) |
AM, AMN, AMS, LSB, USB, CW, FM3, FM6, FMN |
| Image/Spurious Rejection |
60 dB typ. |
| IP3 |
+5 dBm @ 20kHz |
| MDS |
-135 dBm |
| Spurious-free Dynamic Range |
93 dB |
| Phase noise |
-148 dBc/Hz @ 100 kHz |
| RSSI accuracy |
5 dB |
| RSSI sensitivity |
1 µV |
Selectivity
(-6dB)
(See Note 2.) |
| AM |
6 kHz |
| AMN |
4 kHz |
| AMS |
4 kHz |
| LSB, USB |
2.5 kHz |
| CW |
500 Hz |
| FM3 |
3 kHz |
| FM6 |
6 kHz |
| FMN |
12 kHz |
|
| Scanning speed |
40 channels/s |
|
Sensitivity
(AM/SSB/CW 10dB S/N)
(FM 12dB SINAD)
(See Note 3.) |
| Mode |
0.009-0.1 MHz |
0.1-2 MHz |
2-30 MHz |
| AM |
9.0µV |
2.2µV |
0.9µV |
| LSB, USB |
3.0µV |
0.7µV |
0.3µV |
| CW |
1.2µV |
0.2µV |
0.1µV |
| FM3, FM6, FMN |
2.2µV |
0.4µV |
0.2µV |
|
| Intermediate frequencies |
|
| Roofing filter |
2 x 4-pole 15 kHz crystal filter |
| Frequency stability |
10 ppm (0 to 60° C) |
| Antenna input |
50 ohm (SMA connector) |
| Output |
12 kHz IF2 output
(sound card Line Input compatible) |
| Form factor |
2/3 length PCI card |
| Interface |
PCI 2.2 compliant |
| Dimensions |
Length: 195 mm (7.68")
(excluding mounting bracket)
Height: 99 mm (3.90")
(excluding edge connector)
Thickness: 19 mm (0.75")
(incl. components on either side) |
| Weight |
310 g (10.9 oz) |
|
|
|
Notes:
1. The Professional Demodulator offers two additional demodulation modes, DSB and ISB.
2. The Professional Demodulator offers continuously adjustable IF bandwidth from 1 to 15000 Hz.
3. The AM sensitivity is specified at 30% modulation for 10 dB S/N ratio. For 80% modulation, typical AM sensitivity of WR-G303i is 0.3 µV in 2-30 MHz range. The Professional Demodulator improves sensitivity further by making it posible to extend filter lengths, and adjust the IF bandwidth for optimum reception of the received signal: This results in a typical improvement by 2-3 dB on AM/SSB/FM and up to 10 dB on CW.
The WR-G303i receiver is truly one of the most sensitive receivers available, yet with an excellent dynamic range.
The following table illustrates the effect of the AM modulation depth and the Professional Demodulator on typical sensitivity figures:
|
AM Sensitivity (10 MHz, 10 dB S/N) |
| Demodulator |
30% modulation |
80% modulation |
| Standard |
0.9 µV |
0.3 µV |
| Professional |
0.6 µV |
0.25 µV |
Specifications are subject to change without notice due to continuous product
development and improvement. |
|
