Re: SoapySDR Question

[Jeff Long]

I just used all the defaults, except for setting the type to sdrplay, gain to 30, and the bandwidth to 1e6. Set the sample_rate variable block to 1e6. That's it.

On Fri, Oct 1, 2021 at 7:03 AM Chris Vine <vine35792468@gmail.com> wrote:

On Thu, 30 Sep 2021 22:22:38 -0400
Glen Langston <glen.i.langston@gmail.com> wrote:
> Hi Jeff,
>
> Thanks for your quick reply.
>
> I was having trouble figuring out what to put in the Soapy Source block.   
> Do you have a flow graph example?

With gnuradio-3.8 and the gr-soapy block I had this for
gnuradio-companion, but it's not going to help a great deal as a number
of the settings depend on variables.  The sample rate was 2e6/sec, and
bandwidth 600e3 Hz

- name: soapy_source_0
  id: soapy_source
  parameters:
    affinity: ''
    agc0: 'False'
    agc1: 'False'
    alias: ''
    amp_gain0: '0'
    ant0: RX
    ant1: ''
    args: ''
    balance0: '0'
    balance1: '0'
    bw0: 600e3
    bw1: '0'
    center_freq0: mhz * 1e6
    center_freq1: '0'
    clock_rate: '0'
    clock_source: ''
    comment: ''
    correction0: '0'
    correction1: '0'
    dc_offset0: '0'
    dc_offset1: '0'
    dc_removal0: 'True'
    dc_removal1: 'True'
    dev: sdrplay
    devname: sdrplay
    gain_mode0: Specific
    gain_mode1: Overall
    ifgr_gain: if_gain
    lna_gain0: '0'
    lna_gain1: '0'
    maxoutbuf: '0'
    minoutbuf: '0'
    mix_gain0: '0'
    nchan: '1'
    nco_freq0: '0'
    nco_freq1: '0'
    overall_gain0: if_gain
    overall_gain1: '0'
    pga_gain0: '0'
    pga_gain1: '0'
    rfgr_gain: rf_gain
    rxvga1_gain: '5'
    rxvga2_gain: '0'
    samp_rate: samp_rate
    sdrplay_agc_setpoint: '-30'
    sdrplay_biastee: 'False'
    sdrplay_dabnotch: 'False'
    sdrplay_if_mode: Zero-IF
    sdrplay_rfnotch: 'True'
    settings0: ''
    settings1: ''
    stream_args: ''
    tia_gain0: '0'
    tia_gain1: '0'
    tune_args0: ''
    tune_args1: ''
    tuner_gain0: '0'
    type: fc32
    vga_gain0: '0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 136.0]
    rotation: 0
    state: enabled

rsp1atest.grc
Description: application/gnuradio-grc