[Lowfer] 474.2 kHz WSPR false decodes

[John Andrews]

Garry,

Well, for one thing, the WG2XXO callsign is bogus for 630 meters, as it 
belongs to a company with a grant up in the 2 GHz range.

 From some other recent activity, such as you mentioned, there are 
suspicions of "pirates" in our midst, probably to be expected as the 
possibility of a ham band gets more likely. Of course, U.S. call signs 
that lack the "X" as the first letter in the suffix are definitely not 
real.

Looking at the database, it appears that WG2XXM was sending on 475.710 
during the periods that "WG2XXO" was decoded. That may be part of the 
puzzle.

John, W1TAG

On 11/23/2015 9:30 AM, Garry and Linda Hess wrote:
> WSPR decodes are quite reliable in general. When false decodes occur
> they're usually not hard to identify - the callsign is bogus, the power
> level ridiculous, etc. However, recently I've seen a few decodes that
> appear reasonable by themselves, but when you look at others that have
> similar decodes the frequency is all over the map. For example, consider
> WG2XXO by searching the database as
> http://www.wsprnet.org/olddb?mode=html&band=2190&limit=200&findcall=WG2XXO&findreporter=&sort=date.
> Supposedly I decoded this station on Nov 19 from FN30. Strange no NE
> listeners reported it. The callsign is real but the FCC FORM 442
> indicates an address in NC not New England. Others have reported decodes
> for the same callsign but some of them are for 2 frequencies
> simultaneously and overall the frequency given varies wildly.
>
> Other suspect callsigns are WH2XKW, WH2WYT, and WH2WSX. Perhaps there
> are more.
>
> If anyone knows these stations are for real I'd like to hear about it.
> To me these "reasonable" decodes look like the result of RX overload/IM.
> Not sure what the other reporters are using for receive but my eprobe,
> despite impressive IM2 and IM3 specifications, produces IM products that
> can be ripe for misinterpretation. The problem may also relate to
> different decoding software between WSPR and WSPR-X. I've been using the
> latter.
>
> 73, Garry, K3SIW, EN52ta, Elgin, IL
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