[Lowfer] WSPR comparison at 474.2 kHz

[Douglas Williams]

That's too bad. I remember a year or two ago I was regularly decoding DK7FC
(and I think one or two other European LF stations) with WSPR-15. As far as
I can remember, I've only managed to decode him once or twice using WSPR-2.
WSPR-15 is clearly superior for LF DX.

On Thu, Dec 10, 2015 at 9:28 AM, John Andrews <w1tag at charter.net> wrote:

> 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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