Information on Ham, Tech, Web Stuff - HF Remote and SDR's
  • Tue
    03
    Nov 09

    SDR - Si570 Frequency Synthesizer Kit from K5JHF and K5BCQ

    Review of Si570 Frequency Synthesizer Kit from K5JHF and K5BCQ Revision History 11 July 2009. Original 12 July 2009. Expanded with more measurement data 13 July 2009. Added power output versus frequency 14 July 2009. Revised discussion related to calibration and added frequency calibration section Table...

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  • Wed
    28
    Oct 09

    SDR CONTROLLER KIT #2

    The Si570 Controller and Frequency Generator Kit #2 Shows an assembled Si570 Controller with 2-AA batteries. The LCD shows Memory location "36" and 14.060Mhz with the cursor in the 1Khz position. You can see the Si570 chip soldered on the back. This standalone unit (no attached PC required...

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  • Wed
    28
    Oct 09

    SDR - Si570 Controller and Frequency Generator Kit #2

    The Si570 Controller and Frequency Generator Kit #2 includes a 12 digit LCD frequency display, a programmed MC9S08QG8 microcontroller, and a rotary encoder for tuning. For Softrock, it can be used #1) to replace the regular USB I2C interface to the Si570 mounted on the SoftRock or #2) you can mount the...

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  • Sun
    18
    Oct 09

    SDR - LINUX INFO

    www.agri-vision.nl/CMS/index.php homepages.wightcable.net/~g4zfq/Si570.htm#10%20Two%20stand-alone%20controller%20kits%20are%20available.%20%C2%A0 saharlow.com/technology/sigmira/index.htm www.sm5bsz.com/linuxdsp/linrad.htm f1.grp.yahoofs.com/v1/8J3bSgzz6CqwsEqx_Tf9kS-HrGDxDZa5NAoUBkxxNt7Yo9CnHvRoED5cvH6av9S6l6qsjCafMuYsN7q1bn2ljDyCK3mega47ZXrXWDf7hoV0...

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  • Tue
    22
    Sep 09

    SDR - Removing AVR - USB DRIVERS FOR FRESH INSTALL

    > > You should see an entry something like 'LibUSB-Win32 Devices' and 'AVR USB device' or maybe 'DG8SAQ' etc. In the 'Driver' tab just > click on 'Uninstall' and that should remove it from your system. > You will only see this in "Device Manager" if the USB device is plugged in...

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  • Sun
    17
    May 09

    SDR - LO WON'T CHANGE FREQ -

    LO WON'T CHANGE FREQ I had this same problem, which is that the Si570 is not calibrated correctly. It has to be very close to 56.32 MHz or the manufactured value. I calibrated mine by using my Omni VI to generate a known frequency and then use a calibration program to set the Si570. I did this using...

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  • Sun
    12
    Apr 09

    SDR SOUND CARDS

    Summary: Note: These cards were tested with Windows XP Pro. I believe they all provide Vista drivers as well, but not all provide drivers for older versions of Windows. E-MU 0202 USB - Pros: 192 kHz, inexpensive, easy installation, very good dynamic range, excellent image rejection, usable with laptop...

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  • Thu
    09
    Apr 09

    SDR -Switched BPFs Using the USB

    Switched BPFs Using the USB AVR chip. This is getting complicated, various methods have been proposed. As always I recommend keeping with Tony's kit until you know what the alternatives are. "There seems to be a lot of confusion and spurious information being given out regarding the v9.0 receiver...

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  • Thu
    09
    Apr 09

    SDR K0AWU

    - SoftRock Ver9 Software defined receiver V9 with 30-17m coil set. This receiver covers 160-10m. The center frequencies are determined by a USB controlled Si570 much like the V6.3RxTx. The V9 with Softrock 2 meter converter "stack". This converter was designed by the QRP2000 Design team. The...

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  • Thu
    09
    Apr 09

    SDR DRIVER dLL INFO - http://212.254.198.33/bpf_usb/

    http://212.254.198.33/bpf_usb / Powersdr Sdr1kUsb.dll for V9 Sdr1kUsb.dll with BPF support. This should work with original V9 firmware. I have tested with psdr1.14.0 and psdr1.16.1, but shold work with any psdr version. Download Sdr1kUsb.dll for psdr / bpf (all versions) . The original version (no BPF...

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