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Assorted ramblings from the developer


RSPduo
RSPduo

I just spent two days getting the RSPduo integrated with version 3.0.2 using the RSP specification 2.13. So far, so good - works well.

Aiming to release 3.0.2 which has fixes and extra Favourites features.


CW Decoder
CW Decoder

I've always wanted to write a CW decoder from the ground up, a decoder which is as good as the human ear and possibly better. A week ago I started this project as an add-on for V3, the deocder is working but there's a long way to go. It'll probably be available by the end of August, for now here's a taster decoding the NQY (Newquay airport) beacon on 347kHz. Note: this is a development window with extra data to help get synchronised and extract real signals from the noise.

Who knows, maybe add some AI as well?

 


Release: 3.0.1

Additions / Fixes

  • High / Low range in Spectrum now has sanity checks
  • Updated to latest Airspy HF+ code (iqimbalancer)
  • Serial port CAT control supports concatenated commands
  • Bitrate display in Server Manager / Connections now stable
  • RDS data window positioned better, size now user-selectable (ribbon bar, Receive, Mode, Broadcast FM, RDS / Audio, Max size)
  • Regular keepalive Acks now sent when using SDR-IQ, SDR-14, ANAN
  • ICOM R8600 support
  • If there is an error during a data recording (usually can’t write to disk fast enough) then the error is shown in the recording status window on the main UI
  • Added visual gain for ELAD S1/S2
  • Deferred auto-start of previously selected radio, applied extra logic in the case where the radio may no longer be available
  • Narrow FM - high-pass filter now selectable (Ribbon Bar, Receive, Mode, Narrow FM)

ICOM R8600
ICOM R8600

After a few days of programming (interspersed with cold beers) . Available for testing tomorrow with any luck.


3.0 Released
3.0 Released

Version 3.0 was started on February 28th, 2015 at 07:43. Many hours of coding later and I'm able to release 3.0. Check this blog for the status of 3.01, new features, fixes etc.

Download here.

73, Simon


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


Recent Posts

  • Release: 3.0.14 Posted 1 days ago
    Download here [Link]. What's new / changed in 3.0.14: General Closing threads (and the program) now much faster if the thread had not been started, also System Debugger diagnostics have been enabled to find any other issues when closing the program if the ‘Not Responding’ text was seen in the title bar. Fixed bug where a high-pass filter could be incorrectly applied to broadcast FM demodulation. RDS logfile now supports UTC as set in the … Options window. Geostationary beacon window now applies the current contrast when floating. Receive audio equaliser now correctly initialised when started from either: Audio dropdown, Ribbon bar. FM Squelch: big change on the FM squelch front: Now suing power suqelch instead of noise squelch, the squelch threshold/level values will be different, sorry about that. The original code was over nine years old and was a cheap and cheerful solution. In the kit the whole concept has changed, now it’s an advanced squelch based on signal power. Synchronous AM, ECSS Lock Range: ribbon bar entrry added. ...
  • Transparent S Meter Posted 2 weeks ago
    Version 3.0.13 introduced analog S meters and resulted in requests for transparency. One of the big features of SDR Console is the use of Direct2D graphics which is a lot more complicated than the GDI/GDI+ used in many other ham radio programs such as Ham Radio Deluxe. Working out transparency wasn't easy, finally a Microsoft example showed me how to do this. A day when you don't learn something is a day wasted. Here's an example of transparency. This will be part of 3.0.14.
  • Release: 3.0.13 Posted 3 weeks ago
    Download here [Link]. What's new / changed in 3.0.13: General Fixed frequency display problem in the RDS display. 100.05 was displayed as 100.5. Minor change to logic when closing the Matrix window, linked to a memory leak. Reduced background thread start-up time. Added Equaliser… option to the Playback device selection.   The Radio Selection windows displays Connect when a V3 Server is selected, otherwise Start. New option to replace 0 with O in the main frequency display.   Added Google Turbo and Inferno colour schemes.   Markers Memory definitions can now be shown as markers: new option in Markers dropdown and on the memories pane of the ribbon bar. Display of markers more efficient. Enhanced the marker display logic, allowed more room when markers overlap. Recordings Audio recordings made while playing an IQ recording are now timestamped with the time from the playback, not the current time. Added Status option to Playback pane in the ribbon bar. When selected the playback status is shown in the waterfall (the default). If not selected then playback status is not ...
  • Google Turbo Posted 3 weeks ago
    Turbo, An Improved Rainbow Colormap for Visualization  https://ai.googleblog.com/2019/08/turbo-improved-rainbow-colormap-for.html On Tuesday, August 20, 2019 Google posted an interesting colour scheme which they named 'Turbo'. Read more about this in the blog entry (link is above). Below is the colour map in action on the 25m shortwave broadcast band. As of 3.0.13 this is a standard colourmap[ in SDR Console. Also of interest is the use of a SNR (Signam to Noise) S Meter option.
  • S-Meters Posted 3 weeks ago
    After much pestering by users, I finally added an Analog S-meter to SDR Console. These will be available in 3.0.13, coming to a desktop near you soon. Background A few weeks previously a reasonable logic was implemented for measuring the noise floor. Purists will not be happy, but they rarely are, but it works for me. Take the output from the SDR radio, ignore 15% of the bandwidth at the high and low end of the output to avoid the ant-alias filtering, and we're left with a healthy 70% of the signal. Now sort the FFT bins by value, take the mean of the lowest 10% and that's the noise floor. Digital Starting with the standard digital metere: Analog Here are a few screenshots of the Analog S Meter. First a tradition meter in S units. Red = peak signal Yellow = current signal Grey = noise floor   Here's a dBm meter, same colours as above.   And here.s a Signal to Noise (SNR) meter.
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