On 02/20/2015 01:59 PM, Bill Somerville wrote:

Hi Bill !

> WSPR signals are often very weak as low power transmitters are common.
> Also the WSPR transmission algorithm randomizes both the frequency and
> transmission periods so signals are more intermittent than JT65. The
> guard band is designed to encompass all the possible WSPR auto generated
> Tx frequencies.

Up to now, I have never seen any beacon traffic in this yellow marked 
area, but often JT65 traffic. Just now, I can see SM7OYP calling CQ on 
my screen in the yellow range, but I cannot call him. And no beacon 
traffic there.

> WSPR-X is dormant at the moment and is not considered a stable branch.
> The mainstream WSPR branch is still the established application.

OK ! Thank you very much. In my previously mentioned context, calling 
pktconfig in the right manner would probably solve the problem in a 
simple manner. But I'm not skilled in cmake. I ignore how to do this the 
right way.

> It should be noted that other JT65 software does allow transmission in
> the WSPR sub band. WSJT-X will decode those signals and you can work
> them if you must by calling them off frequency, they may not be aware
> that the 30M WSPR band overlaps the JT65 sub band so a "PSE QSY DWN"
> might be a good idea as well.

OK ! But do you have any idea about what the traffic in the 10140.900 to 
10141.400 range is ? Or has anybody an idea ?

>> I'm using Fedora 21 in 32 bit mode.

> Greg is currently in the process of extending the SDK for better Linux
> usability which will make building WSPR easier,

Fine to read that !

> but I believe there are
> binary WSPR packages available for Linux already.

Packages for standard Fedora 21 in 32 bit mode are rare. Although Fedora 
is a popular distribution, it is rarely encountered in the hamradio 
area. I ignore why.

Thanks a lot !

Best 88 de Claude


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