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Anyone using software defined radio?

Discussion in 'Fred's House of Pancakes' started by bwilson4web, Oct 14, 2024 at 10:08 PM.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Starting to see chips that are software defined, radios:
    https://www.analog.com/en/products/adrv9104.html#part-details

    This chip:

    Features
    • Integrated 1 Tx × 2 Rx RF transceiver
    • Operating frequency range of 70 MHz to 6000 MHz
    • Transmitter and wideband receiver signal bandwidth from 12 kHzto 40 MHz
    • Narrowband receiver signal bandwidth from 12 kHz to 2 MHz
    • 2 fully integrated, fractional-N, RF synthesizers
    • 2 fully integrated, fractional-N, RF PLLs to control external VCO banks
    • Supports external LO
    • LVDS and CMOS synchronous serial data interface options
    • Low power monitor and sleep modes
    • Fully integrated DPD for narrowband waveforms
    • User-programmable ARM core with 928 kB memory
    • Interfaces include 2× UART, 2× I2S, I2C, QSPI, SPI, JTAG
    • Library of hardware accelerators
    • Fully programmable via a 4-wire SPI
    • Package: 196-ball, 10 mm × 10 mm, CSP_BGA
    ​
    With a microcontroller, it could provide digital communications while otherwise looking like noise across the bandwidth. Small "clicks" that wander off on a syncrhronized, pseudo, random pattern.

    Bob Wilson
     
    #1 bwilson4web, Oct 14, 2024 at 10:08 PM
  2. PriusCamper

    PriusCamper Senior Member

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    I've studied the product offerings every few years for past dozen years. Always wanted to buy one. It's the ulitmate DIY method for doing whatever you want with radio waves, as well as other parts of the spectrum. But so far nothing has become popular for ease of use. Your link seems similar than that, but if you have experience with this stuff and you can point me in the right direction I'd be super grateful.
     
    #2 PriusCamper, Oct 14, 2024 at 11:55 PM
  3. fuzzy1

    fuzzy1 Senior Member

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    Like spread spectrum? CDMA? Or something else?
     
    #3 fuzzy1, Oct 15, 2024 at 2:09 AM
    bwilson4web likes this.
  4. bwilson4web

    bwilson4web BMW i3 and Model 3

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    I'm curious too but recent eBay/Chinese offering look interesting.

    Bob Wilson
     
    #4 bwilson4web, Oct 15, 2024 at 3:28 AM
  5. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    Hard to find a transceiver these days that's not an SDR - but most of my activities lately have been in the 3-50Mhz range tinkering with digital. I do have some of the ChiComm tri-banders which I have used when the Wx gets a little bumpy but they're part of the "C" and "E" in my 'PACE' plan.
    GMRS and Meshtastic are in my 'to do' list.

    Tread Carefully!
    "Some" of the 70 MHz to 6000 MHz spectrum is already...um 'well regulated.'
    I seem to remember something about encryption being frowned upon when I was getting licensed, and 'Sad Hams" have been a recurring theme lately in post disaster comms.
    IYKYK.....
     
    #5 ETC(SS), Oct 15, 2024 at 10:11 PM
  6. douglasjre

    douglasjre Senior Member

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    Chinese stuff will cause fires Screenshot_20241013-102320.png PXL_20241013_152157336.jpg PXL_20241013_152031694.jpg PXL_20241013_152004710.jpg
     
    #6 douglasjre, Oct 16, 2024 at 3:23 AM
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