[hfsig] Sidebands on Raspberry Pi WSPR carrier

Orrin Winton orrin.winton at gmail.com
Sun Sep 4 13:34:49 CDT 2016


Using my Pi2B with the "shield" board, as i say i hear what i'm calling
"grunge" across the room in another receiver. I then monitored with wsjt-x
set to wspr-2. There are lines in the waterfall every 60 Hz, both sides of
the main signal, with stronger ones every 120 Hz (especially on the upper
side of the main one), but they are all down at least 15dB. A total of
three (including the main one) were decoded.

Again, this is monitoring the Pi output from 20 feet away with no antenna
on the monitor.

Later today i will try to get a screenshot.

Orrin WN1Z



On Sun, Sep 4, 2016 at 11:18 AM, Brad Farr <taprsig at unsupported.org> wrote:

>
> On Sep 4, 2016, at 11:00 AM, Ron Ott wrote:
>
> Is you RPi in a separate box, away from the monitor?
>
>
> It isn't in a box, nor is it connected to a monitor. But it is on top of
> other computer equipment.
> How much physical separation from other electronic equipment would I need
> to make a difference?
>
> Thanks,
> Brad
>
>
>
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>


-- 
"Montanyas kon montanyas no se aserkan; solo personas kon personas."
--Ladino proverb
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