PERSEUS
Pretty Excellent Receiver for Software-Eager Unperceivable Signals
SDR Receiver for VLF-LF-HF
PERSEUS is a VLF-LF-HF receiver made by Microtelecom is based on a outstanding direct sampling digital architecture. It features a 14 bit 80 Ms/s analog-to-digital converter with an exceptional 76 dB SNR (BW = 40 MHz), an high-performance configurable FPGA digital down-converter with an up to 1 MS/s output sampling rate and a 480 MBit/s, high-speed USB 2.0 PC interface. Unlike in lower class direct sampling receivers, the PERSEUS RF analog front-end has been carefully designed for the most demanding users and includes a 0-30 dB, 10 dB steps attenuator, a low-loss 10 bands pass-band RF preselector filters bank, and an high dynamic preamplifier with a top-class input third-order Intercept Point of more than 30 dBm. The resulting third-order dynamic range is 103 dB for SSB signals (2.4 KHz BW) and 107 dB for CW signals (500 Hz BW).
PERSEUS is a so-called software-defined receiver. This means central properties of reception, demodulation, use and usability are all controlled by the software. One example for this would be filters protecting the signal from interference. In place of just a few filters, each for only a specific narrow bandwidth, as has been standard so far, now the software itself filters the reception signal. This allows listeners to tailor bandwidth exactly to each interference condition, modulation and operating mode with no further need for purchasing additional filters or sacrificing reception quality during filter selection.
But what makes PERSEUS truly revolutionary is a real-time frequency display capable of spanning a spectrum of up to 400 kHz. By clicking on individual stations within this spectrum, they can be selected for listening in unprecedented quality.
Whats more, the entire frequency spectrum can be saved to hard drive. In effect, this permits listening to anything within that spectrum of up to 1600 kHz later on. On top of this, it is also possible to further adjust the spectrum after recording. Another part of PERSEUS is a waterfall diagram used for visual tracking of all activity within a spectrum of even up to 40 MHz over an extended period of time.
Tecnical Specifications
| Frequency range | 10 KHz - 40 MHz | |
| Modes | USB, LSB, CW, AM, FMN, FSK, DRM, etc.(and countless more as software can define) | |
| Sensitivity | 0.39 uV SSB (S+N)/N= 10 dB* | |
| Selectivity | Defined by the PC software | |
| Rejection | 90 dB* | |
| IP3 | 31 dBm* | |
| Dinamyc Range | 103 dB (SSB, 2.4 Khz BW)* 107 dB (CW, 500 Hz BW)* | |
| Blocking | 125 dB* | |
| Minimun detectable signal | -124 dBm (SSB, 2.4Khz BW)* -131 dBm (CW, 500Hz BW)* | |
| Output sampling rate | 100/200/400/800/1600 kHz segnali I&Q | |
| Preselector | 1 x 3-poli-low pass(0 - 1,7 MHz) 9 x 6-poli bandpass (1,7 - 30 MHz) Switch off for broadband view | |
| Attenuator | 0, 10, 20, 30 dB | |
| AD Converter | 14-Bit, 80Ms/s | |
| DDC | XC3S250E | |
| PC interface | USB 2.0 480 Mbit/s (cable included) | |
| Power supply | +5Vdc +/-5% 1 A (power supply 220v included) | |
| Dimension | 110 x 36 x 185 mm (L x H x P) | |
| Cabinet | Alluminium | |
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* (Tip. 14.2 Mhz) |
Main program PERSEUS - spectrum view
Main Program PERSEUS - waterfall view
PERSEUS is capable of displaying the full spectrum from 10 KHz to 40 MHz with a resolution bandwidth of 10 kHz and a dynamic and spectral purity comparable to the best spectrum analyzers available on the market. That function PERSEUS was developed special software for Windows, HFSPAN, given that came with your receiver.
Software HFSPAN
PERSEUS is a SDR receiver and use PC software to make the process of demodulation. The compatibility and support of application software most used by radio amateurs are provided by a DLL library for the Microsoft Windows operating systems.
Main Program PERSEUS - waterfall view - With the new version of the software is possible obtain a bandwidth up to 1600 kHz
SUPPORT FOR REMOTE NETWORK OPERATION
The latest software release allows remoting a Perseus receiver to any TCP/IP connected location. A standalone server software (included in the zipped package available in the download page) was developed to allow remote connections, supporting unrestricted or authorized access to the receiver. Based on upload bandwidth requirements, three presets were defined for the server software: GPRS, ADSL or LAN.
The client can show both spectral and audio data with bandwidths as low as 80 kbps, or up to 2 Mbps for maximum quality and features (such as local decoding of a DRM transmission caught by the remote receiver or signal demodulation with a third-party software).
Local and remote operation are provided through the same client software for maximum interoperability and user friendliness. Users can specify whether to appear on the Perseus Servers Map to allow easier connection through a simple point and click on any remote server icon.
 | Technical Specification | Block Diagram | |
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