[Xastir] Noisy conditions

Skyler F electricity440 at gmail.com
Thu Jun 25 13:49:25 EDT 2015


>
> Soundmodem does work but there are several alternative options out there
> now and almost all of them are superior.


Other than extra features on other sound modem software packages, are there
actual disadvantages on decoding packets where soundmodem does not work as
well?

I would say those two packets sound fairly decent but they don't sound like
> 100% standard packets.  Do you know what's sending them?


PocketPacket on iPhone with a baofeng radio was sent through no antenna to
simulate a weaker signal. The only reason I started testing this stuff was
because I noticed I was not decoding a large amount of packets I was
hearing, and they didn't seem to have a huge amount of noise on them.


Skyler KDØWHB

On Wed, Jun 24, 2015 at 10:32 PM, David Ranch <xastir at trinnet.net> wrote:

>
> Hello Skyler,
>
>  I set up a USB sound card with soundmodem (I could not figure out
>> direwolf) and started decoding packets
>>
>
> Strange that you were able to get Soundmodem working but not Direwolf.
> It's usually the other way around!  Happy to give you a hand if you want.
>
>
>  I was told that packets can be decoded in noisier environments then
>> standard FM voice, but that isn't showing to be true.
>>
>
> Yeah.. not true.  Soundmodem does work but there are several alternative
> options out there now and almost all of them are superior.  Here is a list
> I put together some time ago:
>
>
> http://www.trinityos.com/HAM/CentosDigitalModes/hampacketizing-centos.html#6.softtnc
>
>
>  Here is a MP3 file of two packets. The first one was not decoded and the
>> second one was decoded by sound modem. They both seem pretty clear noise
>> wise however, and I want my station to decode as well as possible when it
>> is put into use.
>>
>> I am using speaker audio from an alinco dr-600.
>>
>> http://amsatnet.info/recordings/APRS.mp3
>>
>
> I would say those two packets sound fairly decent but they don't sound
> like 100% standard packets.  Do you know what's sending them?
>
> --David
> KI6ZHD
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>



-- 
Skyler Fennell
amsatnet.info
KDØWHB
electricity440 at gmail.com


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