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Assorted ramblings from the developer


Simon G4ELI
Simon G4ELI

Simon's blog


FM Band II E's & Tropo
FM Band II E's & Tropo

The band is filled with lots of French, Spanish and Moroccan stations, a mix of Tropo and Sporadic-E. Using Airspy R2 and 8-element yagi from Innov Antennas.


Direct Frequency Input

You now enter a new receive frequency by simply entering 0 ... 9 or . (period). As soon as you start typing the Frequency window is displayed.

  • C toggles the Centre option,
  • K toggles between kilohertz and megahertz.
  • For more options click the ellipses.


Signal History Export

The signal history is selected from the View, Spectrum pane in the ribbon bar, the data is exported by selecting the ellipses button.

In the Export window you now select:

  • Field delimiter and correcsponding file format of comma (CSV) or tab (TSV),
  • Decimal separator of . or the separator for your locale, for example a ,.


Broadcast FM

At the request of Broadcast FM users, I've added the most common options to the ribbon bar. The image below shows what's now.

  • Stereo - enables stereo, when signals are weak mono can be preferable,
  • Partial - enable display of text even when only partially decoded, should be used in very weak signal situations,
  • PI Code - show the Program Information code,
  • Show - show the RDS text in an overlay on the waterfall.

1 kW SDR
1 kW SDR

Next week a beta Gemini 1K will arrive at the G4ELI location. With just 10W from an ANAN 10E it'll generate 1 kilowatt without breaking into a sweat.

http://www.linamp.co.uk/gemini_HF.html


V3 Beta
V3 Beta

After three years the first beta is available, download from http://www.sdr-radio.com/Software/Downloads.


V3 Server
V3 Server

Still early days - testing the connection between Cornwall and North Carolina. Streaming IQ data, working well. Enjoying the AM transmissions on 80m.


ISS Images, Dec 7th - 8th 2017

In total nine of the twelve were copied during the afternoon passes on December 7th and 8th 2017.

         


ISS Images, Dec 6 2017, 15:03 UTC

Excellent images copied from the ISS. radio is the Airspy HF+, 12 element X Yagi, satellite tracking etc. from SDR Console.

     


LimeSDR Transmitting
LimeSDR Transmitting

I spent a day working on transmit support for the LimeSDR. This is by no means finished, but I'm able to say that it works. I have a few problems,

  • Big spur at 0Hz, probably generated by a bad software mixer,
  • Noise bursts when switching from receive to transmit. 

The above are down to my own software, so I'll give myself a good kicking sometime and get this fixed later in 2017 or early 2018.

Here we see the Upper Sideband (USB) signal as received with an Airspy HF+.

And here's the TX panel from SDR Console.


Recent Posts

  • FM Band II E's & Tropo Posted 2 weeks ago
    The band is filled with lots of French, Spanish and Moroccan stations, a mix of Tropo and Sporadic-E. Using Airspy R2 and 8-element yagi from Innov Antennas.
  • Direct Frequency Input Posted 2 months ago
    You now enter a new receive frequency by simply entering 0 ... 9 or . (period). As soon as you start typing the Frequency window is displayed. C toggles the Centre option, K toggles between kilohertz and megahertz. For more options click the ellipses.
  • Signal History Export Posted 2 months ago
    The signal history is selected from the View, Spectrum pane in the ribbon bar, the data is exported by selecting the ellipses button. In the Export window you now select: Field delimiter and correcsponding file format of comma (CSV) or tab (TSV), Decimal separator of . or the separator for your locale, for example a ,.
  • Broadcast FM Posted 2 months ago
    At the request of Broadcast FM users, I've added the most common options to the ribbon bar. The image below shows what's now. Stereo - enables stereo, when signals are weak mono can be preferable, Partial - enable display of text even when only partially decoded, should be used in very weak signal situations, PI Code - show the Program Information code, Show - show the RDS text in an overlay on the waterfall.
  • 1 kW SDR Posted 2 months ago
    Next week a beta Gemini 1K will arrive at the G4ELI location. With just 10W from an ANAN 10E it'll generate 1 kilowatt without breaking into a sweat. http://www.linamp.co.uk/gemini_HF.html
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