G8JNJ

It looks like a modulation sideband from the Radio China broadcast station, I'd guess it was similar on the others sideband too. The music played on Radio China, tends to include a lot of flute type instruments, which produce extended sidebands with regular harmonic patterns that can resemble data type signals on the waterfall.

There are also Chinese jamming signals that attempt to make the Voice of Hope unusable, that also sound a bit like data, but I don't think that is what you have received in this instance.

I don't think this forum allows the attachment of audio recordings, so you maybe better off asking questions like this on the UDXF IO forum.

Regards,

Martin

You will have difficulty decoding anything from that signal, it is US Navy, 850Hz shift 50bd KW-46 Encrypted, Lualualei, Hawaii.

Try using some of the KiWi's preset stations in the FSK extension, to get a better "feel" for the different shifts and baud rates.

The most common FSK signals tend to be Russian 200Hz (or near) shift "BEE" format.

https://www.sigidwiki.com/wiki/CIS-36-50

https://www.sigidwiki.com/wiki/CIS-50-50

Regards,

Martin

If you click on the column headers Internal / HF / External on the http://rx.linkfanel.net/ webpage, it will sort that column in descending order.

Personally, I like to sort by the HF value, as that is often a better indicator of actual performance.

However, the whole SNR measurement process can only really be used as a rough guide, and unfortunately the majority of KiWi installations are badly let down by poor antennas, often in very noisy urban locations.

The KiWi's in the top 10% (70 out of approx 700) SNR scores, are generally OK, but some of the rest are really awful, which is a great pity, and IMHO a great waste of resource.

Purchasing a receiver is only a very small part in the overall process of receiving signals. Although you can't really do without one, even a top of the range model, isn't going to make up for a poor antenna.

Signal to Noise Ratio is what matters, not absolute signal strength. Good transmit antennas don't always make good receive antennas, as they are required to do different things.

I'll keep on repeating this mantra until things improve, but I suspect I'll die first...

Regards,

Martin

The port is defined in the actual device configuration file.

Some port numbers are used for specific purposes, like 80 for web pages or 22 for SSH, others are chosen and sometimes become a defacto standard, but the can be changed if required.

Imagine your IP is like a street address for an apartment block. The port number defines which apartment within the block is the actual address to send and receive mail.

With SDR++, you simply use the same url format you would use to connect to any other SDR+++ server, bur with your IP details instead, followed by the port number :5259.

You should be able to connect to your own server if both devices are using the same local network.

If you wish to connect outside of this, over the internet, you will need to add a port forwarding rule to your router.

The KiWi makes this easy, by offering a number if options to configure this function.

Regards,

Martin