Skip to main content

Welcome to the lab! RTL SDR R820T

Sudah lama saya menginginkan alat ini, karena dari dulu saya selalu menginginkan sebuah radio yang bisa scanning dengan range yang besar. Alat ini bisa dijadikan sebagai Software Defined Radio, dimana alat ini bisa dikontrol frekuensinya menggunakan komputer. Chipset R820T ini merupakan chipset yang umumnya bisa menerima frekuensi diantara 24 MHz - 1850 MHz. Namun pada kenyataanya setelah saya test rangenya hanya 24 MHz sampai 1766 MHz.
RTL SDR R820T
Tuner R820T ini saya rasa cukup "sangar" karena dengan harga yang terjangkau, sudah bisa menangkap frekuensi dengan lebar dan dengan sensitivitas yang cukup bagus dengan antena bawaan (stock). Sempat sedikit bingung mau beli antara R820T ini atau SDR dengan chipset E4000. Sempat bertanya - tanya pada forum SDR di facebook dan saya putuskan untuk memilih R820T saja.

Komentar facebook forum SDR

Percobaan yang sudah saya lakukan diantaranya mendengarkan frekuensi FM 88 - 108 MHz dengan hasil yang cukup bagus dengan kondisi di dalam kamar dengan antena bawaan. 

Selain itu saya juga mencoba ADSB, monitoring pesawat dengan antena bawaan juga dengan kondisi di dalam kamar juga, hasilnya bisa menangkap 1 pesawat, mengingat rumah saya yang jarang dilewati pesawat.

Tadi malam, saya sempat mencoba untuk scanning terhadap sinyal GSM di frek. 900MHz, dan hasilnya saya bisa mendapatkan sinyal dari salah satu provider di Indonesia :) Namun kali ini, saya menggunakan antena luar. (maaf belum ada fotonya)

Tertarik dengan alat ini? Saya kemarin Jumat tanggal 9 Mei 2014 melakukan pemesanan kepada toko online Indo-Ware di Semarang, karena saya cari di Jogja tidak nemu. Dengan harga sekitar 200rb + 20rb untuk pengiriman ke Jogja. Link barang selengkapnya ada di http://indo-ware.com/produk-2420-rtl-sdr-chipset-r820t.html Saya beli hari Jumat, Sabtunya langsung sampai ke rumah.

Sedikit catatan,
  1. Jangan melakukan instalasi driver bawaan jika anda ingin bermain dengan SDR 
  2. Tuner ini saya coba di Windows dan di Linux, hasilnya tuner ini lebih sensitif di Linux.


Comments

Popular posts from this blog

HackRF Mayhem Failed to Update - M0 Guru Meditation Hard

I was on Mayhem Portapack v2.0.1 and want to upgrade to the latest stable release v2.1.0. The update went okay using the web upgrade https://hackrf.app/. But then I saw the latest nightly update and want to try it, since it has many new tools that are not yet included in the stable release. But then the update failed :( Disclaimer: I didn't take any photos of the errors, since I was focused on googling the solution. So the error was " Bad Firmware or Failed W/R error" during the upgrade process, and it was stuck. So I had to restart the device, and it was booting to the Mayhem menu, but on the bottom left, which should show the current firmware version, it was showing a  "FLASH ERR"  message. I think I should go back to the stable release, but I can't. Every time I want to flash the stable release version, the portapack will shows an error M0 Guru Meditation - Hard Fault.  There's an issue that was closed on the Mayhem GIT repo that has the same issue a...

Fiberhome HG6145D2 Superadmin Login

Maybe some of you are using In**ehome ISP as your home internet and found out that using the provided login has minimal options to configure the router: user  user1234 I know it’s not the admin login, and that must be a full-control user account that can be used to control this router fully. So I searched and found some posts on the net and most of them are telling me to use: admin %0|F?H@f!berhO3e I tested it and it doesn’t work! But there’s more to it, you need to reset the router first by pressing the reset button on the side of the router. Then after resetting, you can log in using the admin superaccount! But keep in mind, never use the user log in again, because it will lock the super admin login until you reset the router again. Cheers 🍺

Macintosh Classic II Brightness Issue

The Problem My Macintosh Classic II suffers from an issue where the display CRT goes dim after a few minutes on a cold boot. Every time it happens, I need to crank up the cut-off and brightness  pot behind the machine to show the image. The Analyze At first, I thought it must be the brightness issue, so I searched for the Macintosh Classic analog board schematic to check the brightness line. I found the schematic from Bomarc, and the schematic is suitable with my board, since there are two analog board versions.  I started to suspect the resistors and potentiometer on the brightness line. This Macintosh version has software-controlled brightness, so the analog board will get a 22.25 kHz square wave PBM signal from the logic board to control the brightness. I checked and replaced some resistors and cleaned the potentiometer, but nothing seems to work. The signal is there, and no sign of degradation that makes the screen dim after a few minutes.  Brightness Line So I suspec...