[Lowfer] Bogus WSPR decodes

[jrusgrove at comcast.net]

Paul

That's a bogus decode. You can count the number of active stations on 137 kHz on your fingers and 
toes and have some left over...and that's not one of them. Another tip off is the grid square - it's 
somewhere in the vicinity of Australia.

Bogus decodes can occur when there are multiple signals in the window - whether both are WSPR 
signals or not. A few weeks back JB had several 'phantom' copies of my WSPR signal which were 
uploaded to the database. This caused me to drag out the spectrum analyzer just to make sure there 
was no problem on my end - which there wasn't. It became obvious that the problem occurred when both 
WE2XGR/6 and myself  were transmitting during the same time period although I've also seen it when 
only one signal is present if it has a s/n somewhat > 0 dB. Not sure if the problem is in the 
receiver, sound card or the program. Very rarely I do get a completely bogus decode with no big 
signals about. No idea what causes that.

Jay



----- Original Message ----- 
From: "Paul Daulton" <k5wms at centurytel.net>
To: "Discussion of the Lowfer (US, European, &amp;UK) and MedFer bands" <lowfer at mailman.qth.net>
Sent: Sunday, March 07, 2010 9:21 AM
Subject: Re: [Lowfer] Bogus WSPR decodes


> John I think I got a bogus copy on 137 last night my self. I copied this
> about an hour after I set up wspr for the first time on 2200 meters;
>
> 2356 -33 0.137586 4 OF1CZC ON23 0
>
> I cant find that call in  any data base. I didnt get another copy all night
> on 137. There was a bright line on 580 on the waterfall and it would breakup
> ever so often but doubt if it was wspr. I did get legit copies on 160
> meters.
>
> Did any thing you copied look like the above? Last night and another night
> will make two for me. I am brand new so I havent a clue.
>
> Paul k5wms
> ----- Original Message ----- 
> From: "John Bruce McCreath" <weazle at hurontel.on.ca>
> To: "&amp; UK) and MedFer bands Discussion of the Lowfer (US European"
> <lowfer at mailman.qth.net>
> Sent: Sunday, March 07, 2010 8:00 AM
> Subject: [Lowfer] Bogus WSPR decodes
>
>
>> Hello LowFERS,
>>
>> I've ran WSPR the last few evenings on 137 and had good decodes of the
>> stations that have announced that
>> they'll be on.  However, I seem to be getting a lot of bogus ones as well,
>> and am reluctant to upload the spots
>> to the database.  I haven't had this problem on 500 kHz., so I'm wondering
>> if it's band related or something
>> altogether different?  Any ideas or suggestions?
>>
>> 73, J.B., VE3EAR
>>
>> LowFER Beacon "EAR"
>> 188.830 kHz. QRSS30
>>
>>
>>
>>
>>
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