Архив за 05.10.2018

Off-Topic • Re: SDR# TETRA demod plug-in Network Info capture to file


Statistics: Posted by rtlsdrdev-user — Fri Oct 05, 2018 8:05 pm

Comment on New Product: RTL-SDR Blog 1090 MHz ADS-B LNA by mike

can the 1090LNA be run at a slightly higher voltage than 5VDC to slightly increase gain? (i’m wondering about voltage drops thru 110ft of LMR400 and a lightening arrestor) i am currently using 5VDC and drawing 150mA

Comment on How to use DSD+ with WineSkin on OSX by Patrice

Same here!

Troubleshooting Help • Meu dongle para de funcionar

Comprei recentemente o meu RTL-SDR Blog marca R820T2 RTL2832U 1PPM TCXO HF viés Tee SMA Dongle (V3) e fiz a instalação ontem no meu PC, funcionou normal, porém, ao instalar em meu notebook, verifiquei que após instalar, ao ligar, ele funciona por alguns segundos e em seguida fecha o programa! ( isso só aconteceu no notebook, no PC normal de mesa não ocorreu)
Poderiam me orientar por favor??? Agradeço a todos!

Statistics: Posted by kampaixt — Fri Oct 05, 2018 3:50 pm

Электро-Л №2, 7500 МГц, 10:00 UTC….

Электро-Л №2, 7500 МГц, 10:00 UTC.

RTL-SDR Discussion • RTLSDR V3 Dongle for mobile DAB reception

I like to use a RTLSDR V3 (R820T2) dongle for mobile DAB reception.

Starting from https://github.com/steve-m/librtlsdr.git:
* I enabled the BIAS TEE for supporting my active antenna
* I enabled the VAGC for having a quick AGC
=> So far, this is working.

Additional, I like to measure the current RF field strength.
Because the automatic AGC is used, I have no current/software gain value.

In http://superkuh.com/R820T2_Register_Description.pdf, I found the register
0x03/RF_INDICATOR[7:0], but this value is allways 0xff. Any hint for enabling this register?
Any hint for getting the current VAGC gain?



Statistics: Posted by MS71 — Fri Oct 05, 2018 1:45 pm

HELP! My APT pictures are coming out like this!

HELP! My APT pictures are coming out like this!

Any ideas on what I can do to fix this?


submitted by /u/deFRAGer
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YouTube Talk: Evaluating 9 of the Best Single Board Computers for Ham Radio SDR Systems

Over on YouTube the Ham Radio 2.0 channel has recently uploaded a talk that Scotty Cowling (WA2DFI) did at the 2018 TAPR digital communications conference. His talk centers around single board computers and his findings on the nine best single board computers (SBC) for ham radio SDR setups.

Scotty's talk begins by discussing why you'd want to use SBCs in your ham radio SDR setup, and explains why you might want to place them with the SDR close to the antenna, and then distribute the data over ethernet cable. He then reviews 9 boards listed below: 

  • Hardkernel Odroid C1
  • Raspberry Pi 3B
  • Hardkernel Odroid XU4
  • ASUS Tinker S
  • FriendlyElec NanoPC-T4
  • Pine64 RockPro64
  • 96 Boards Mediatek X20
  • 96 Boards HiKey 960
  • UDOO X86 Ultra

The boards are compared against CPU clock speeds, architecture, cache, debut year, RAM, boot ROM, bus speeds, OS support, and more. Scotty also discusses the need for low latency operation, but is yet to compare this on the boards. The best value for money boards that Scotty recommends end up being the Odroid XU4, Tinkerboard, NanoPC-T4 and the RockPro64.

Ham Radio 2.0: Episode 151 - Evaluating 9 of the Best Single Board Computers for Modern SDR Systems

PCBs and SMA connectors arrived! First filter is built.

PCBs and SMA connectors arrived! First filter is built. submitted by /u/Sir_Garbus
[link] [comments]

Начал паять конвертор….

Начал паять конвертор.
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