Technical Topics > SDR - Software Defined Radio

RX888 go on!

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ChrisSmolinski:
Jari, thanks for the tip. Looks like I may have ordered a Chinese HeathKit  ;D

Jari Finland:

--- Quote from: ChrisSmolinski on October 12, 2020, 1950 UTC ---Jari, thanks for the tip. Looks like I may have ordered a Chinese HeathKit  ;D

--- End quote ---

 ;D ;D

kris:
   Hi ALL - Thanks for appreciating my self-denial!
Indeed, I found myself, here is the installation kit that works.
https://drive.google.com/drive/folders/1l6zIgal1RosyXpTBjM1JWJmLJ6OuUWP_
 A little - what is what you will learn here:
controller=post&action=view&id_post=21]http://www.steila.com/blog/index.php?controller=post&action=view&id_post=21
Filtering and tuning is made using overlap and add with frame of 1024 as 768 +256 samples. The filter time responses are 257 sample long.

When 32Msps is used the local oscillator of HDSDR is fixed to 16 MHz at centre of spectrum and the fine tuning of HDSDR allows reception from 500 kHz to 31500 kHz, while with lower sample rates the local oscillator can be tuned with 125 kHz step while the fine tuning is made by HDSDR.

At this development stage ExtIO_sddc.dll has a GUI dialog with 4 tabs :

Status - reports ADC rate and I&Q rate.
BBRF103 -  buttons :
LW-MW this is used to modify the FFT output filtering to receive the low frequency band.
    (is missing in my version  (info Kris)
HF - standard HF setup .
VHF - enables R820T2 ( it is disabled, to enable undefine _NO_TUNER_ in config.h and recompile)
DITH - enables the ADC dither.
RAND - enables the ADC randomize.

TRACE - enabled in debug mode  to trace some signals to log files.

Test
RF ADC stream: it requires BB103, ADC input ,default,
RF virtual tone: it requires BB103, virtual tone,
RF virtual sweep: it requires BB103, virtual sweep,
IF virtual tone: NO hardware required, virtual tone ,
IF virtual sweep: NO hardware required, virtual sweep,[/i]

syfr:

--- Quote from: Jari Finland on October 12, 2020, 1954 UTC ---
--- Quote from: ChrisSmolinski on October 12, 2020, 1950 UTC ---Jari, thanks for the tip. Looks like I may have ordered a Chinese HeathKit  ;D

--- End quote ---

 ;D ;D

--- End quote ---

Except Heathkits came with detailed instructions !

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