[Lowfer] WSPR comparison at 474.2 kHz

[John Andrews]

Doug,

No, the only version that handled WSPR-15 was WSPR-X. That's kind of too 
bad, as WSPR-X is an orphan with a lot of shortcomings. It doesn't run 
on some machines, sometimes runs and freezes, sometimes stops reporting 
to the WSPR database, and so forth. The WSPR community regards WSPR-15 
as unnecessary, though us LF-types had pretty good luck with it. I've 
had to give up on WSPR-X here due to stability problems, and don't think 
I'm the only one.

John, W1TAG

On 12/10/2015 8:43 AM, Douglas Williams wrote:
> Does WSPR2.0 decode WSPR-15 signals?
>
> On Thu, Dec 10, 2015 at 7:25 AM, Garry <k3siw at sbcglobal.net> wrote:
>
>> I've been running WSPR-X v0.8 to decode 474.2 kHz WSPR transmissions for
>> some time now. But I noticed that weak waterfall signals that seemed strong
>> enough to decode often did not. So last night I simultaneously ran WSPR
>> v2.0. WSPR-X results were uploaded for the call K3SIW and WSPR2.0 results
>> were uploaded for the call K3SIW/1.
>>
>> Both were driven by an eprobe up about 10' in the back yard to an
>> externally clocked SDR=IQ and DELL3020 Win 7 64 bit PC. The resulting
>> decodes were generally within 1 dB SNR of each other and a few tenths of a
>> second in timing. However, as noticed before, WSPR2.0 picked up a number of
>> SNR cases around -28 dB SNR and even less that WSPR-X failed to decode. On
>> the other hand, WSPR-X only false decoded WH2WSX (this was in good company
>> with a lot of other reporters) while WSPR2.0 had two egregious false
>> decodes (IB8HFK and Q55KRL), as well as WG2XXO (which also has been false
>> decoded by others).
>>
>> Seems that the extra sensitivity of 2.0 comes at the expense of reduced
>> credibility.
>>
>> 73, Garry, K3SIW, EN52ta, Elgin, IL
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