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F0GXR Ham

Radioamateur

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Promo. Radioamateur !

on Jun 01, 2018
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Arduino (uno) vs Radioamateur 2

on May 30, 2018

arduino_hamradio.jpg (800x346)

decod-CW_F0GXR_arduino.jpg (853x192)

Générateur de code Morse (CW) :

http://radiobxi.org/blog/?p=2230

Balise-CW_F0GXR_ArduinoUnoClone.jpg (1200x900)

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Arduino (uno) vs Radioamateur

on May 30, 2018

arduino_hamradio.jpg (800x346)

Arduino-Gen_FELDHELL.jpg (996x411)

DSCN7673.jpg (1200x900)

Générateur de code Hellschreiber (Feld Hell) :

http://radiobxi.org/blog/?p=2381

Code source : (d’origine probable BrainWagon !)

int radioPin = 4 ; // Optocoupleur émission
int audioPin = 12 ; // HP de contrôle (facultatif)
int ToneFreq = 980 ;
typedef struct glyph {
char ch ;
word col[7] ;
} Glyph ;
const Glyph glyphtab[] PROGMEM = {
{‘ ‘, {0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000}},
{‘A’, {0x07fc, 0x0e60, 0x0c60, 0x0e60, 0x07fc, 0x0000, 0x0000}},
{‘B’, {0x0c0c, 0x0ffc, 0x0ccc, 0x0ccc, 0x0738, 0x0000, 0x0000}},
{‘C’, {0x0ffc, 0x0c0c, 0x0c0c, 0x0c0c, 0x0e1c, 0x0000, 0x0000}},
{‘D’, {0x0c0c, 0x0ffc, 0x0c0c, 0x0c0c, 0x07f8, 0x0000, 0x0000}},
{‘E’, {0x0ffc, 0x0ccc, 0x0ccc, 0x0c0c, 0x0c0c, 0x0000, 0x0000}},
{‘F’, {0x0ffc, 0x0cc0, 0x0cc0, 0x0c00, 0x0c00, 0x0000, 0x0000}},
{‘G’, {0x0ffc, 0x0c0c, 0x0c0c, 0x0ccc, 0x0cfc, 0x0000, 0x0000}},
{‘H’, {0x0ffc, 0x00c0, 0x00c0, 0x00c0, 0x0ffc, 0x0000, 0x0000}},
{‘I’, {0x0000, 0x0c0c, 0x0ffc, 0x0c0c, 0x0000, 0x0000, 0x0000}},
{‘J’, {0x003c, 0x000c, 0x000c, 0x000c, 0x0ffc, 0x0000, 0x0000}},
{‘K’, {0x0ffc, 0x00c0, 0x01e0, 0x0330, 0x0e1c, 0x0000, 0x0000}},
{‘L’, {0x0ffc, 0x000c, 0x000c, 0x000c, 0x000c, 0x0000, 0x0000}},
{‘M’, {0x0ffc, 0x0600, 0x0300, 0x0600, 0x0ffc, 0x0000, 0x0000}},
{‘N’, {0x0ffc, 0x0700, 0x01c0, 0x0070, 0x0ffc, 0x0000, 0x0000}},
{‘O’, {0x0ffc, 0x0c0c, 0x0c0c, 0x0c0c, 0x0ffc, 0x0000, 0x0000}},
{‘P’, {0x0c0c, 0x0ffc, 0x0ccc, 0x0cc0, 0x0fc0, 0x0000, 0x0000}},

{‘Q’, {0x07f8, 0x0c0c, 0x0c0c, 0x07fc, 0x0007, 0x0000, 0x0000}},
{‘R’, {0x0ffc, 0x0cc0, 0x0cc0, 0x0cf0, 0x079c, 0x0000, 0x0000}},
{‘S’, {0x078c, 0x0ccc, 0x0ccc, 0x0ccc, 0x0c78, 0x0000, 0x0000}},
{‘T’, {0x0c00, 0x0c00, 0x0ffc, 0x0c00, 0x0c00, 0x0000, 0x0000}},
{‘U’, {0x0ffc, 0x000c, 0x000c, 0x000c, 0x0ffc, 0x0000, 0x0000}},
{‘V’, {0x0ffc, 0x0018, 0x0078, 0x01c0, 0x0f00, 0x0000, 0x0000}},
{‘W’, {0x0ff8, 0x000c, 0x007c, 0x000c, 0x0ff8, 0x0000, 0x0000}},
{‘X’, {0x0c0c, 0x0738, 0x01e0, 0x0738, 0x0c0c, 0x0000, 0x0000}},
{‘Y’, {0x0e00, 0x0384, 0x00fc, 0x0384, 0x0e00, 0x0000, 0x0000}},
{‘Z’, {0x0c3c, 0x0c6c, 0x0ccc, 0x0d8c, 0x0f0c, 0x0000, 0x0000}},
{‘0’, {0x07f8, 0x0c0c, 0x0c0c, 0x0c0c, 0x07f8, 0x0000, 0x0000}},
{‘1’, {0x0180, 0x0300, 0x0604, 0x0ffc, 0x0004, 0x0000, 0x0000}},
{‘2’, {0x061c, 0x0c3c, 0x0c6c, 0x0ccc, 0x078c, 0x0000, 0x0000}},
{‘3’, {0x0c03, 0x0c03, 0x0cc6, 0x0fcc, 0x0078, 0x0000, 0x0000}},
{‘4’, {0x1fe0, 0x00c0, 0x00c0, 0x0ffc, 0x00c0, 0x0000, 0x0000}},
{‘5’, {0x0003, 0x1fc3, 0x18c6, 0x18cc, 0x1878, 0x0000, 0x0000}},
{‘6’, {0x07fc, 0x0c46, 0x18c6, 0x00c6, 0x007c, 0x0000, 0x0000}},
{‘7’, {0x0e06, 0x0c1c, 0x0c70, 0x0cc0, 0x0f80, 0x0000, 0x0000}},
{‘8’, {0x0f3c, 0x19e6, 0x18c6, 0x19e6, 0x0f3c, 0x0000, 0x0000}},
{‘9’, {0x0786, 0x0cc6, 0x0c4c, 0x0c58, 0x07f0, 0x0000, 0x0000}},
{‘?’, {0x0c00, 0x1800, 0x18e6, 0x1980, 0x0f00, 0x0000, 0x0000}},
{‘/’, {0x001c, 0x0070, 0x01c0, 0x0700, 0x1c00, 0x0000, 0x0000}},
{‘-‘, {0x0180, 0x0180, 0x0180, 0x0180, 0x0180, 0x0000, 0x0000}},
{‘+’, {0x0180, 0x0180, 0x0ff0, 0x0180, 0x0180, 0x0000, 0x0000}},
} ;#define NGLYPHS
(sizeof(glyphtab)/sizeof(glyphtab[0]))
void
encodechar(int ch)
{
int i, x, y, fch ;
word fbits ;
for (i = 0; i < NGLYPHS; i++) {
fch = pgm_read_byte(&glyphtab[i].ch) ;
if (fch == ch) {
for (x = 0; x < 7; x++) {
fbits = pgm_read_word(&(glyphtab[i].col[x])) ;
for (y = 0; y < 14; y++)
{
if (fbits & (1 << y))
{
digitalWrite(radioPin, HIGH) ;
tone(audioPin, ToneFreq) ;
}
else
{digitalWrite(radioPin, LOW) ;
noTone(audioPin) ;
}
//delayMicroseconds(4045L) ;
delayMicroseconds(3995L) ;
}
}
}
}
}
void
encode(char _ch)
{
while (_ch != ‘\0’)
encodechar(*ch++) ;
}
void
setup()
{
pinMode(radioPin, OUTPUT) ;
pinMode(audioPin, OUTPUT) ;
}
void
loop()
{
encode(« CQ CQ BALISE ARDUINO UNO – TEST FELD HELL – 73 DE F4xxx ») ;
}

Arduino-Gen_Feldhell2.jpg (1020x596)

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Micro-transceiver VHF SA-828 Nice-RF

on May 29, 2018

http://radiobxi.org/blog/?p=4452

Le module TRX (micro-transceiver) SA-828 de Nice RF (chine) est identique à celui des talkie-walkies VHF-UHF chinois de marque Baofeng !

DSCN8590.JPG (1200x900)

DSCN8596.JPG (1200x900)

DSCN8595.JPG (1200x900)

DSCN8599.JPG (1200x900)

SA828-V_NiceRF.jpg (1020x596)

DSCN8601.JPG (1200x900)

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Réception TV numérique radioamateur 437 MHz

on May 29, 2018
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Debian 8.1 live-dvd GNU-Linux vs Ham Radio

on May 29, 2018
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Le blog radioamateur de F0GXR

on May 31, 2015

F0GXR_VP.png (355x144)

hamshacking1.JPG (1200x900)

Voici quelques petits gadgets de type QRPp Homebrew "Ugly" .

Articles ici :

http://radiobxi.org/blog/?s=vincent

http://radiobxi.org/blog/?s=vincent&paged=2

Ci-dessous :

  • générateur de tonalité 1750 Hz pour les relais radioamateurs VHF/UHF

  • générateur de tonalité CW (code Morse) / CW Keyer

  • mini amplificateur audio 1 Watt

  • mini récepteur radio Onde Moyenne (OM)

  • mini détecteur RF VHF/UHF

  • Oscillateur HF à quartz 7 MHz (micro-TX CW QRPp)

  • antenne ground-plane VHF quart d'onde sans soudure !

F0GXR-Ho.JPG (1200x900)

F0GXR_Homebrew2.JPG (1200x900)

CW_Training_keyer555_F0GXR.JPG (1200x900)

CW_Key_homebrew_F0GXR.JPG (1200x900)

1-VHF-GP144_Homebrew_Domino_F0GXR.JPG (1200x900)

2-VHF-GP144.JPG (1200x900)

3-VHF-GP.JPG (1200x900)

4-VHF-GP.JPG (1200x900)

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