Re: SDR as Waterfall display
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I have not tried it,but from the circuit description the first conversion is at 45 MHz.? I would try laying a short insulated wire near Q10.? You may even be able to tap off the emitter of q12 with a low value capacitor.?
Then tune the SDR ( I assume we are talking the about $ 15 TV dongle, but does not matter)? to around 45 MHz.??
There may be more out now, but the two that I bought a number of years ago, one goes from about 25 MHz up and the other starts at 50 some MHz.
de ku4pt
On Wed, May 30, 2018 at 3:06 PM, brad martin <emclinux@...> wrote: I noticed that the CEC firmware has an SDR mode but this seems to be where the audio as as well are transmitted to the SDR and handled there.? Seems to be a good method for digital or recording but is there a way to just use the SDR as a waterfall display and still have the radio function as normal (i.e. have audio come out the radio speakers)?
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