QRP 2000 USB Controlled Synthesiser Kit
Developed by QRP2000-Design team:
Tom DG8SAQ, John (SK) G8BTR, Alan M0PUB, Guido PE1NNZ, Steve G0XAR & Jan G5BBL
Full Band or Multi Band coverage of Softrock RXTX V6.1 and V6.2 transceivers (use Kit 1 CMOS version)
Standalone Operation (without PC connection) with Last Frequency Remember supported (Modification required)
External Local Oscillator for other SDR hardware Projects using PowerSDR application
Wide range test oscillator output frequency programmable in steps < 1 Hz
Frequency Range Kit 1: 3.5 MHz to 210 MHz for Kit 1 (10-160 Mhz specified by Silabs) and Kit 2: 3.5 MHz up to 280 MHz (10-280 MHz) specified by SiLab for C-grade LVDS device supplied) Si570BBB Device up to 945 MHz (810 MHz specified by Silabs) available
Stability +/- 50 ppm CMOS or +/- 20 ppm LVDS versions
Output: Square wave : CMOS version 2.6V pk-pk 15pF , LVDS version 0.7V pk-pk into 100 Ohm
Power Supply: USB Powered or +5V to +12V Power Supply approx 100mA
PCB size 41 x 48 mm
Suitable for constructors with some previous experience of kit building experience like Softrock Projects
This Kit uses the Silicon Labs Chip SI570, an "ANY-RATE I2C PROGRAMMABLE XO", which is a 7x5mm 8 pin integrated frequency synthesizer, that can generate almost any frequency between 3.5MHz and up to 945 MHz depending on the Si570 chip used. The ready programmed ATMEL connects to the PC via the USB port
- Kit 1 supplied with Si570CAC -max frequency 160 MHz
- Kit 2 supplied with Si570BBC - max frequency 280 MHz
- Kit 3 supplied without chip
- Kit 4 supplied with Si570BBB - max frequency 810 MHz
- Kit 5 supplied with Si57DBA - max frequency 1.417 GHz
QRP2000 kits are available from our Webshop
QRP 2000 Documentation
Latest QRP2000 v2.6 documentation as from January 2011 updated with
Windows 7 and Vista Certified Driver installation information
PCB V1.1 SDR-Synthesizer Kit Documentation (PDF File) Older PCB V1.0 Build Documentation and Circuit diagram PCB
AVRSi570 Troubleshooting Guide by DG8SAQ Use this guide to trace your problem
QRP 2000 Software
Download latest Digitally Certified Driver Windows 7, Vista (64 bits and32 bits) - this is the latest driver required for Windows 7 and Vista which also suitable for older Microsoft OS courtesy of Fred Krom (PE0FKO)
Current PowerSDR Software for SDR Current version of PowerSDR application with Softrock extensions provided by Guido PE1NNZ through Sourceforge
Latest PowerSDRS R40 Installation Documentation Updated PE1NNZ PowerSDR Documentation
Rocky V3.6 SDR Application Software Download Alex VE3NEA's Rocky 3.6 Program with USB AVR support - thanks to Alex for providing this support.
Latest V4 USB_SYNTH - Stand alone application to set Si570 Frequency:
Tom DG8SAQ has written a cute application to set the frequency of theSi570 which may be downloaded from the link above.
-The frequency may be set to the nearest Hz......
-Or a Multiplication factor (in fractions) or Frequency offset (IF offset) may be specified ..
-Applications include RX Local Oscillator and VXO for TX applications, Test Oscillator or QRSS Beacon etc.
-Picture right shows the Setup screen and the configuration options.
-Last Frequency Remember - Option for Standalone applications
-SI570 Speed grade can be set for optimum use of C-grade device