[hfsig] Fwd: Comment Submission from Vince Staffo WB2FYZ - 4/21/2016

Zoltan Doczi zoltan.doczi at gmail.com
Sun Apr 24 14:53:27 CDT 2016


Hi Vince,

The shield itself is perfectly fits RPi 3, as there were no significant
mechanical change from RPi 2 to RPi 3 upgrade.

However there are other chipset architecture changes which influence the
software operation when used with rpitx (FM,SSB modes)

rpitx is shifting randomly +2.8 MHz (tracked down to dynamic CPU frequency
feature of RPi 3: https://github.com/F5OEO/rpitx/issues/21 )
Here already a command line workaround for that, also I'm iterating with
the developers.
https://github.com/F5OEO/rpitx

I got an RPi 3 for a few days and made some initial tests. It looks like
that WsprryPi (WSPR) operation works stable, without any shifting issue so
far. I was running on my desktop for a few hours, monitored with a spectrum
analyzer and there was no prolem.
https://github.com/JamesP6000/WsprryPi

73,
HA7DCD
Zoltan

On Fri, Apr 22, 2016 at 1:55 AM, TAPR Office <taproffice at tapr.org> wrote:

>
> Begin forwarded message:
>
> *From:* vince767 at gmail.com
> *Date:* April 21, 2016 at 6:04:09 PM CDT
> *To:* TAPROFFICE at tapr.org
> *Subject:* *Comment Submission from Vince Staffo WB2FYZ - 4/21/2016*
> *Reply-To:* vince767 at gmail.com
>
> Name:    Vince Staffo WB2FYZ
> Email:    vince767 at gmail.com
>
> Message:    Does the Raspberry Pi QRP WSPR TX shield
> work with the Raspberry Pi 3 ?
>
> Thank You,
>
> Vince - WB2FYZ
>
> ---------------------------------------
>
> Name: Vince Staffo
> Callsign: WB2FYZ
> Address: 10 Monroe St.
> City: ILION
> State: NY
> Country: USA
> Zip: 13357
> Phone: 3158943265
>
>
> _______________________________________________
> hfsig mailing list
> hfsig at tapr.org
> http://www.tapr.org/mailman/listinfo/hfsig
>
>
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