[Lowfer] PSK31 success last night.
Eric NO3M
no3m at no3m.net
Tue Apr 29 15:22:18 EDT 2014
Neil
A few other "chat" modes to consider are THOR4, DominoEX4, Jason, and
WSQ2. WSQ2 has had limited testing, but supposed to be superior to
other chat mode implementations for LF/MF. Info and program here:
http://www.qsl.net/zl1bpu/SOFT/WSQ.htm
To beacon in WSQ2, just copy and paste your text a few dozen times in
the TX window.
With WSQ2 and more subdued QRN conditions, it may be possible to copy to
the east. Last night was rather harsh in terms of QRN. Listening SW all
night on the 8-circle array (more or less like a 4+ element yagi on
600m), I only ended up decoding WG2XIQ near sunrise on WSPR2.
73 Eric NO3M / WG2XJM
On 04/29/2014 03:08 PM, Neil Klagge wrote:
> Hi John. I would be glad to send you some PSK when you think conditions are
> right for your reception of it. I have to admit, however, that I have not
> had a very strong signal in your direction in the past, and it is late in
> the season now. But, nothing ventured – nothing gained. Let's find out
> what's possible.
>
> My comment about GMSK is from the experience of others that believe it is
> better than PSK on this band. I tried that mode a month or more back and
> was copied well in British Columbia.
>
> I want to continue experimenting with various modes. I welcome all requests
> to experiment in that regard.
>
> Thanks for your email, John.
> 73, Neil XSV
>
>
> On Tuesday, April 29, 2014, JD <listread at lwca.org> wrote:
>
>> I'd be interested in listening for your PSK31 signal in Kansas some night
>> when the storm noises aren't as severe as they were last night, Neil. I
>> had
>> a continuous S9 roar on 630m here, and worse down lower in frequency.
>> Couldn't even see MP on 2200m last night, and that's unusual.
>>
>> If you're looking for better performing modes, why GMSK? Its only
>> advantage
>> over conventional MSK is narrower occupied bandwidth, which is important in
>> some applications, but that comes at a price...more power is needed for
>> comparable performance, and the software has to compensate for the
>> intersymbol interference that arises from the Gaussian filtering. All MSK
>> modes are phase-continuous (unlike PSK), so there are no envelope amplitude
>> variations to affect your Class D amplifier. Plain MSK at a suitable bit
>> rate for the conditions found on the band might be a better alternative.
>>
>> John
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