Autor Tema: Odg: SDR RTL2832U  (Posjeta: 1271 )

0 Članova i 1 Gost pregledava ovu temu.

Offline AD6IW

  • Hero Member
  • *****
  • Postova: 905
    • Profil
Odg: SDR RTL2832U
« : 11. Svibanj. 2012, 00:32:09 »
Citat:
Tko zna preprogramirati originalni program ? ili zna neki drugi za tu namjenu odgovarajuci program ?.
Tom sretniku smijesi se lijepi dzeparac !!!!!!

Kada definises 'djeparac"  kodiranje je "easy"  :)
ad6iw



Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #1 : 18. Svibanj. 2012, 10:23:02 »
Na kristalu piše 28.800Mhz
ili
JYG28.800V8   V8=?

Vece znacenje imaju ova dodatna slova i brojke, tko zna mogao bi iscitati ppm.
Odstupanje ovih 2KHz ispada nekih nestandardnih 69.5.

Staviti neki stabilniji kristal?
Koliko odstupa na GHz, tocnije na 1.090 GHz?
« Zadnja izmjena: 18. Svibanj. 2012, 13:36:25 9A4OE »

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #2 : 19. Svibanj. 2012, 12:38:43 »
E4K sch

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #3 : 06. Lipanj. 2012, 13:07:13 »

... WRplus uopće ne radi...Expiration extended to 03/06/2012...

Klik kome se neda petljati sa hex editorom. Samo exe fajl, iskopirati preko postojeceg

8B 8D 60 FD FF FF zamijeniti sa B9 00 28 CD 01 90
« Zadnja izmjena: 06. Lipanj. 2012, 21:54:56 9A4OE »

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #4 : 22. Lipanj. 2012, 19:18:23 »
Na bazi programa SDRSharp-a razvija se i varijanta koja ce moci skenirati odredjeni dio frekvencijskog spektra.
Testna verzija 357
Testna verzija 411T
Testna verzija 411T2
Testna verzija 411T3
Testna verzija 411T4
Testna verzija 411T5 stabilna na XP
« Zadnja izmjena: 27. Lipanj. 2012, 20:03:19 9A4OE »

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #5 : 27. Srpanj. 2012, 20:38:17 »

Izrada na profi pločicama, SMA konektori, SMD komponente, predložite cijenu.

QV

Sve po 10 kn.

Moze li kit varijanta?
Kristal?
Moze bit onaj od 2$, a moze i onaj od 25$-28$.

U medjuvremenu nesto za proucavanje E4K
« Zadnja izmjena: 27. Srpanj. 2012, 21:00:44 9A4OE »

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #6 : 30. Srpanj. 2012, 08:08:38 »
2.2.1 Power-supply noise minimization
Power supply side
Linear regulators have a better output in terms of noise. The mains must be stepped down,
rectified and filtered, then fed to linear regulators. It is highly recommended to connect the
filter capacitors to the rectifier output. Please refer to the datasheet of the used linear
regulator.
If you are using a switching power supply, it is recommended to have a linear regulator to
supply the analog stage.
It is recommended to connect capacitors with good high-frequency characteristics between
the power and ground lines. That is, a 0.1 µF and a 1 to 10 µF capacitor should be placed
close to the power source.
The capacitors allow the AC signals to pass through them. The small-value capacitors filter
high-frequency noise and the high-value capacitors filter low-frequency noise. Ceramic
capacitors are generally available in small values (1 pF to 0.1 µF) and with small voltage
ratings (16 V to 50 V). It is recommended to place them close to the main supply (VDD and
VSS) and analog supply (VDDA and VSSA) pins. They filter the noise induced in the PCB
tracks. Small capacitors can react fast to current surges and discharge quickly for fastcurrent requirements.
Tantalum capacitors can also be used along with ceramic capacitors. To filter low-frequency
noise, you can use high-value capacitors (10 µF to 100 µF), which are generally electrolytic.
It is recommended to put them near the power source.
To filter high-frequency noise, you can use a ferrite inductance in series with the power
supply. This solution leads to very low (negligible) DC loss unless the current is high
because the series resistance of the wire is very low. At high frequencies, however, the
impedance is high.

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #7 : 16. Rujan. 2012, 08:32:45 »
Darko gugle
ne zaboravi lozinku

Offline AD6IW

  • Hero Member
  • *****
  • Postova: 905
    • Profil
Odg: SDR RTL2832U
« Odgovori #8 : 19. Prosinac. 2012, 02:36:01 »
Citat:
Evo listam (misem) zadnji broj QST-a (broj 1 od 2013),

QST Jeli to onaj magazin koji je nekad bio za radio-amatere?
Same reklame  :'(  Vise lici na kakav zenski modni casopis, samo nisam znao da i oni
parfermiraju stranice sa kenvud, yeasu i icom after shave-om 
Onda Honda mirise na mlijeko?   :)

ad6iw

Offline AD6IW

  • Hero Member
  • *****
  • Postova: 905
    • Profil
Odg: SDR RTL2832U
« Odgovori #9 : 07. Siječanj. 2013, 02:51:22 »
Luci i Darko,

Kada ste vec "zastranili" sa donglovima i  balonima, onda evo i ATS-B  aplikacije
dva programa, decoder i ploter. Enjoy

http://rtl1090.web99.de/

ad6iw

Offline 9A4OE

  • Sr. Member
  • ****
  • Postova: 391
    • Profil
Odg: SDR RTL2832U
« Odgovori #10 : 16. Siječanj. 2013, 10:59:47 »
Nastavak ruske inačice, neke sitna poboljšanja, kad se spusti aktivni prozor na alatnu traku može se pratiti na kojoj je frekvenciji prilikom skeniranja.

Nalazi se gdje i dosad

Pošto nema zainteresiranih za preuzimanje TsSDR+dodatak za spregu sa CW skimerom, DEL


« Zadnja izmjena: 19. Siječanj. 2013, 13:15:37 9A4OE »