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G8JCFSDR

SDR Console with Frequency Control Function


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This universally usable SDR software supports (from build 216) also frequency tuning of the DRB 32.

A very comprehensive software eqipped with numerous features and modes written by the British radio amateur PeterCarnegie G8JCF.

This unique software includess a lot of new unique features and abilities. A complete review would require a substantially larger volume.

The best way to get familiar with most features is learning-by-doing. Starting with a basic configuration (default) you might try with different settings & values until you find one that is satisfying.

  • Modes

Amplitude Modulation: AM, BC (AM Broadcast) , SAM (Synchronous Demodulator)

SSB: LSB, USB

Frequency Modulation: FM

DRM: Therefore the DREAM software has to be installed additionally . When selecting DRM DREAM starts automatically and runs in the background.

  • Frequency Control

Several tuning mechanisms are possible:

- Mouse Scroll Wheel

- Keyboard <- and -> arrow key

- Optional encoder

Therefore first move the mouse pointer over the digit you want to tune.

Besides this it is also possible to select & edit preset frequencies. Also broadcast & amateur radio bands & bandplans are included.

  • Filtering

400Hz - 5KHz plus dynamic & special music filters

  • Notch Filtering

Automatic & mirror frequency suppression

  • Filter Settings

Manual configuration & automatic tracking

  • AGC

Fast, normal & slow

  • Noise Reduction

0 - 40% slider controls

  • Audio Recorder

The audio recorder makes it possible to record the demodulated audio into WAV files

  • Scope

Frequency spectrum (Freq) & oscilloscope function (time & phase)


Below you will find a few screenshots concerning configuration (Config) of the DRB 32:

Select the SDRModel NTI DRB 32. According settings are loaded automatically >>> Default

IF offset is 45 000 000 (Hz) = 45.000.000MHz. With this setting the tuned signal is displayed in the middle of the spectrum display with 12KHz sweep range.


Here we see the default values of the printer port adress.

Standard port adress is LPT1 (according HEX &H378). An alternative would be LPT2 (according HEX &H278).


Frequency tuning is also supported via the optional USB adaptor DRB USB. Therefore select accordingly NTI USB:


Website & Download G8JCFSDR

This site contains also more informations & instructions for use.