[amsat-bb] BPSK demodulators?

[Edson W. R. Pereira]

Hi Jan,

I've donwloaded the IQ file and run the demodulated audio through
soundmodem. The performance is quite impressive indeed. It was also nice to
see the 2400 bps BPSK activity. Soundmodem could decode de 2400 bps BPSK
signals quite well.

Last night I monitored QB50p1 with soundmodem and warbler. As Ken has
observed, soudmodem decodes about twice more frames. I had the BitRecovery
in sourmodem set to 1. This may have helped as well a little.

It would be quite good if FEC was more widely used in amateur satellite
projects. Monitoring the BPSK1200 signals from FunCube-1 shows clearly the
power of FEC. Sometimes we can barely hear the signal or there is a deep
fading and frames are correctly decoded. The BPSK1000 used in ArissSat-1
was another excelent demonstration of the benefits of FEC.

73, Edson PY2SDR



---
- We humans have the capability to do amazing things if we work together.
- Nós seres humanos temos a capacidade de fazer coisas incríveis se
trabalharmos juntos.

On Sat, Jul 11, 2015 at 1:45 PM, PE0SAT | Amateur Radio <pe0sat at vgnet.nl>
wrote:

> Hi Edson,
>
> You won't regret it, it is a superb sound-modem and also has the ability
> to serve as a AGW and/or kiss server.
>
> Give my IQ recording on http://janvgils.home.xs4all.nl/download/QB50px/ a
> go
> with this version and you'll be astonished
>
> 73 Jan PE0SAT
>
>
> On 11-07-2015 18:29, Edson W. R. Pereira wrote:
>
>> Thanks, Adrian,
>>
>> I wasn't aware that the UZ7HO soudmodem software now supports 1200 BPS
>> BPSK
>> (as well as a number of other modes). I will give it a try.
>>
>> 73, Edson PY2SDR
>>
>>
>> ---
>> - We humans have the capability to do amazing things if we work together.
>> - Nós seres humanos temos a capacidade de fazer coisas incríveis se
>> trabalharmos juntos.
>>
>> On Sat, Jul 11, 2015 at 1:04 PM, Adrian Engele via AMSAT-BB <
>> amsat-bb at amsat.org> wrote:
>>
>>  Try,
>>>
>>> http://uz7.ho.ua/packetradio.htm
>>>
>>>
>>> 73, Adrian AA5UK
>>>
>>>
>>> Sent from Yahoo Mail on Android
>>>
>>> From:"Ken Swaggart" <k.swaggart at charter.net>
>>> Date:Sat, Jul 11, 2015 at 10:42 AM
>>> Subject:[amsat-bb] BPSK demodulators?
>>>
>>> Are there any other 1200 baud BPSK demodulators available other than
>>> Warbler.jar?
>>>
>>> Ken, W7KKE
>>> _______________________________________________
>>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
>>> Opinions
>>> expressed
>>> are solely those of the author, and do not reflect the official views of
>>> AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>> program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>> _______________________________________________
>>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
>>> Opinions
>>> expressed
>>> are solely those of the author, and do not reflect the official views of
>>> AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>>> program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>>  _______________________________________________
>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed
>> are solely those of the author, and do not reflect the official views
>> of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
> --
> With regards PE0SAT
> Internet web-page http://www.pe0sat.vgnet.nl/
> DK3WN SatBlog http://www.dk3wn.info/p/
>