Blog

 

 

 


 

Responsive-V

Visit the author's own website at www.dit-dit-dit.com.

 



 

SDR-Radio.com

rss

Assorted ramblings from the developer


E's To Morocco

A very nice opening this morning to Morocco on Band II Stereo (88 - 108MHz).


Airspy HF+ Discovery

Listening to France Musique, a station whose output is sorely missed in the UK.

Using the latest little stunner from Airspy.


Airspy HF+ Discovery
Airspy HF+ Discovery

Screenshots taken with a prototype Airspy HF+ Discovery. This beauty is half the size of the Airpsy HF+ and it's as good if not better. Proper comparison data later.

If you suffer from strong signals then Discovery will not let you down.


Release: 3.0.8

Download here [Link].

What's new / changed in 3.0.8:

Broadcast FM

New features and changes for 88 - 108MHz FM broadcast reception and the RDS decoder.

RDS decoding has been improved by making PI code detection mor sensitive.

US Callsign logic now uses data from NRSC for callsign and location.

Spectrum window now a docking pane. Display the spectrum window by selecting Ribbon Bar, Receive, Broadcast FM. 

Logging of station from the RDS decoding has been added, this is the RDS Logfile option. To display the logfile click the Log button in the BFM Spectrum.

The logfile has all the options you need:

  • Enable / Disaply updates
  • The number of recent entries displayed
  • Detail level (brief, full)
  • Font size for ageing eyes
  • Delete entries
  • Edit an entry
  • Export as text
  • Options

Click ••• to display the options.

Airspy Options

The Airspy options have moved from the ribbon bar to the Receive DSP panel.

USB Relay

The USB relay terminology has been changed to avoid confusion.

  • ON = Turn ON a relay channel (Activate).
  • OFF = Turn OFF a relay channel (Deactivate).

Data (IQ) Recording

Playback now correctly detects ELAD recerdings and displays the format as ELAD. later the contents of the elad chunk in the WAV file will be supported.

Scheduled Recordings

  • Now can select single file in the definition, this uses WAV RF64.
  • Fixed display issues.
  • Tidied up the code.

Geostationary Beacon

  • Increased bandwidth for LNBs with very serious drift!
  • Fixed crash when bandwidth changed past the minimum / maximum supported.

Frequency Database

AOKI URL updated and new format supported.

Font size selection for ageing eyes.

Defauly field order changed, will be user-configurable in a future release.

Perseus

The sample rates 192kHz, 96kHz and 95khz are now calibrated.

Satellites

Tidying up and extending the Select Satellite option. Instead of just selecting a satellite, pressing Select in the Satellite ribbon bar now display the Select Satellite window which provides an overview of the entries in the Satellite List as well as selection of new satellites.

Footprint configuration is now consolidated into a property page.

Narrow FM

Uses the original version 3 de-emphasis and has better peak volume control.

Pluto

Problems with the transmit signal bursting reduced by redesigned inefficient code, see Pluto support page for more information.


Band II DXing
Band II DXing

If you want to take a break from DX on the ham bands, why not try Band II DX?

Version 3.0.8 (coming soon) has an automatic log of received stations.

More information is available here.


ALADM-PLUTO Support is Ready
ALADM-PLUTO Support is Ready

After 10 days of very interesting programming the pluto project is ready to be released into the wild now that basic transmit support is ready.

Vist the Pluto page on this site [link].

Here's three FM Stereo signals being demodulated along with their RDS.


ADALM-PLUTO (3)

Here's a screenshot of Pluto receiving FM Stereo.

More information available on the Pluto page [link].


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.


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.
Read More »

 

Responsive-S