Amateur Radio Clubsavagemessiahzine.com
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Discuss base stations in topic? (mobile connection)
Yes. [ 123 ] ** [52,12%]
Not. [ 50 ] ** [21,19%]
What equipment do you use?
USB dongle [ 103 ] ** [43,64%]
Airspy [ 9 ] ** [3,81%]
hackRF [ 43 ] ** [18,22%]
bladeRF [ 1 ] ** [0,42%]
Ettus research [ 0 ] ** [0%]
Raspberry Pi + module (s) [ 25 ] ** [10,59%]
Homemade [ 23 ] ** [9,75%]
Other [ 29 ] ** [12,29%]
Arduino [ 18 ] ** [7,63%]
USB-HDMI / VGA adapter [ 8 ] ** [3,39%]
SDRPlay RSP [ 8 ] ** [3,39%]
Total votes: 236
 



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📡

Amateur Radio Clubsavagemessiahzine.com



In this topic you can chat or discuss technical issues.

Vocabulary
SDR
SDR - Software-Defined Radio (software-defined radio system). Radio transmitter and / or radio receiving technology that allows you to install or change the operating radio frequency parameters using the software, including, in particular, the frequency range, modulation type or output power, except for changing the operating parameters used during the usual pre-definite work with the preliminary Installations of radio device, according to a particular specification or system.

POR performs a significant part of the digital signal processing on an ordinary personal computer or an FPGA. The purpose of such a scheme is a radio receiver or radio transmitter of arbitrary radio systems, modified by software reconfiguration.

Software radio has great utility for military applications and wireless services, as it allows you to serve a large number of radio protocols.

Equipment for ERP usually consists of a superheterodyne receiver, which converts the signal from radio frequency to intermediate, analog-digital and digital-analog converters (ADC and DAC).
RX / TX
Rx - Recieve - Receive / Receive
Tx - Transmit - Transmit
Equipment
SDR comparison
Attached Image

Duplex - receive and transmit

Airspy
Airspy- rtl-sdr modifications. Differ in the improved noise reduction.
RTL-SDR
RTL-SDR - SDR from DVB-T usb tuners (RTL2832 board) Cost about 600 rubles (China). They work with GNURadio and other programs. Are the most budget option. Rx
Broadcast
Rx / Tx RTTY
IMSI-catcher
Frequency ranges

___________________________________________________________________________________________________________
| tuner | frequency range |
|пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ
| Elonics E4000 | 52 - 2200 MHz to the "blind zone" from 1100 MHz to 1250 MHz |
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| Rafael Micro R820T | 24 - 1766 MHz (can be improved to ~ 13 - 1864 MHz with experimental drivers) |
|пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ
| Rafael Micro R828D | 24 - 1766 MHz |
|пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ
| Fitipower FC0013 | 22 - 1100 MHz |
|пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ
| Fitipower FC0012 | 22 - 948.6 MHz |
|пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ
| FCI FC2580 | 146 - 308 MHz and 438 - 924 MHz (there is a "blind zone" between them) |
пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ

Nexus 5
Oddly enough, this smartphone can be used as a full SDR with the transfer! Works at a frequency of 2.4 - 5 GHzNexmon-sdr
USB-VGA / HDMI
Tx SDR from USB 3.0 - VGA / HDMI adapter. FL2000-1 0-DX card requiredRead more

Interesting frequencies
Radio amateurs
PHPoeniX- RTL-SDR
max_b- 2 RTL-SDR
Stalkerstrike19- hackRF One, LimeSDR
Timofejj
didi.tarakan
Digins- RTL-SDR
Ged_sh- RTL-SDR
SigmaTel71
Roman Dmitrievich- 3rtl-sdr, RPi, walkie talkie Baofeng UV-5R UV-B5, Arduino
MishaP3908
morgoth-75- RTL-SDR.Read more
Signature
Amateur Radio ClubR
[URL = //savagemessiahzine.com/forum/index.php? show

Useful

Programs
Help in filling the topic is welcome!


Post has been editedPHPoeniX - 27.03.20, 10:45
Reason for editing: A new ham radio



Rep: (24)
At the request of uv. Phpoenix post information on creating your cellular network. My cellular BS launched LimeSdr on the transceiver with two antennas from the router on the 5DBi strengthen each. Used Linux to host 10i Windows through VirtualBox with all necessary software. In the future I plan to create your full and understandable manual, because I had to spend a couple of weeks to merge information from various users-manual Osmocom and establishing missing dependencies. In general, very interested in all kinds of radio electronics: SDR, codegberbrants, programmers, scanners, telecom, SIM cards, smart cards, RFID, NFC, and so on.

Post has been editedStalkerstrike19 - 11.11.18, 23:15



Rep: (423)
Nexmon-sdrallows you to make a nexus 5 or Raspberry Pi 3B + software-defined radio system that works as a transmitter, without connecting additional devices! : shok: Operates on the frequency from 2.4 GHz to 5. Modules: BCM4339 and BCM43455c0

Post has been editedPHPoeniX - 22.01.19, 21:28



Rep: (423)
Found an interesting repository on github. Using RTL-SDR astransceiver for RTTY (radio teletype): https://github.com/tejeez/rtl-trx
Perhaps later it will be possible to use, as an analogue of telnet or even ssh!
The transmission is rather weak, readme has information on increasing power and a lot of tips.



Rep: (24)
* PHPoeniX So rtl-sdr does the whistle only go to reception? Or can it be redone for transmission?

Posted on 12/12/2018, 16:52:

* PHPoeniX , Ah, I get it. Use a crystal oscillator as a radiation source: D Yes, this can be done on almost any electronics) I even saw a laptop as a radio transmitter. So any device with a crystal oscillator emits radio waves.



Rep: (423)
* Stalkerstrike19 , the transmission has been hanging in the header for a long time: Amateur Radio Clubsavagemessiahzine.com(Post by PHPoeniX # 77708795)



Rep: (24)
* PHPoeniX , Yes, cool) I sold mine early) In general, HackRF and LimeSDR are enough.



Rep: (633)
Hi guys, for now I’ll just leave a tick in the subject, I’m even a listener now, fig.



Rep: (43)
I apologize for offtopic, but why only now has such a club appeared on such a forum? It was high time.I have been interested in the topic for a long time, but I'm not savvy for iron, where would I advise you to start?

Post has been editedJaguarKing - 18.12.18, 18:19



Rep: (423)
* JaguarKing ,
JaguarKing @ 12/18/18, 18:17 *
offtop
here bobber.
I advise you to take a TV tuner for 600 rublesit is not joke!Amateur Radio Clubsavagemessiahzine.com(Post by PHPoeniX # 77708795)
Or nexus 5:Amateur Radio Clubsavagemessiahzine.com(Post PHPoeniX # 79653175)

Post has been editedPHPoeniX - 18.12.18, 21:27



Rep: (43)
* PHPoeniX , thanks, but is it possible to find out the presence of the RTL2832 board specified in the header somehow without opening the device or is it only released on such devices? it was just an experience with consoles, where it was impossible without removing the battery, for example, to find out what the fee is.

Post has been editedJaguarKing - 18.12.18, 21:38



Rep: (423)
* JaguarKing , on aliexpress in the description they write. I advise you to take exclusively with delivery from Russia, as may delay at customs.
A few years ago, a criminal case was brought against me for buying an alarm for a car.
It turned out that according to the law, even batteries cannot be transported across the border ... They will find something to sue, believe me. Somehow managed to close the case.



Rep: (43)
* PHPoeniX , uh, thanks for the advice, I heard from a friend once that he had been called to customs from behind a laptop from some Amazon ...



Rep: (423)
* JaguarKing , there are also boards from elonics - not available, the manufacturer went bankrupt, in the first post there is a comparison.
It is better to take boards with R820T, with R820T2 there are a lot of problems with the library for Linux.



Rep: (423)
BY
Abbreviations
O pen- open source.
Free- closed source, free

Linux
Installation commands will be covered for Debian based systems.
GNU RadioO - a harvester that can do anything! Installation: apt install gnuradio
GpredictO - satellite tracker, with a trigger that works only with the built-in scheduled receiver (without a "waterfall"), there is also support for servo drives for auto-guidance. apt install gpredict
retrogram-rtlsdrO- text (ascii art) spectrum analyzer. No repositories - needcompile yourself Source
Osmo-fl2kO - Software for USB 3.0-VGA / HDMI adapter. Compile yourself . Source
Windows
Android
SDR Touch + Rtl driver - "listener" for Android, works only with RTL-SDR, a driver for the tuner is attached.

DroidSat is a simple satellite tracker with augmented reality mode.

Robot36 - receive photos through a microphone

ADSB for Pilot PRO - ADSB decoder, displays the position on the "radar"

Samples radio signals database - signals, a brief description, sound and waterfall. It works without the Internet.
Antenna Calculators
Cantennator - calculator for antennas: bi-quad, double bi-quad, can, spiral, wave channel, coaxial, bi-loop, patch yagi, triple square.

Dipole antenna calculator - linear vibrator, loop, butterfly, gp antenna and "J" antenna.

LPDA designer is a speech therapy antenna calculator.
Files



Post has been editedPHPoeniX - 22.03.19, 13:22
Reason for editing: Zadig old



Rep: (1)
Advise what to do - I live in the city, in the usual nine-story building also on the first floor. Actually the question is: does it make sense to take an ordinary cheap tuner for 600 rubles and also to it the usual “horns” for the TV, and will it ever catch something from my concrete box?



Rep: (112)
About 15 years ago he liked to monitor the broadcast on amateur bands. A lot of things could be heard. And now, somehow, time is already gone for this, and the technique is a bit behind. Maybe catch up soon. But the topic is very interesting and correct.



Rep: (423)
* Timofejj , several years ago, craftsmen found a budget receiver - Chinese TV tuner for 600 rubles. Since then, there have been many more ham enthusiasts.

Post has been editedPHPoeniX - 21.12.18, 20:25



Rep: (423)
Engineers launching CubeSail satellite ask for help from radio amateurs
It became known that the CubeSail satellite is not communicating. CubeSail is a demonstrator of technology from CU Aerospace, which wanted to demonstrate the viability of the idea of ​​using the solar sail as an engine for long-distance space flights. The satellite was built and managed by students from the University of Illinois at Urbana-Champaign through the student organization Satellite Development (SatDev).
CubeSail is a pair of satellites connected by a ribbon - sail.
Presumably, CubeSail batteries are too discharged to turn on the satellite, but it has an emergency beacon at a frequency of 437.305 MHz, which turns on once an hour and transmits a telemetry packet. CubeSail engineers have only one receiving station, which can receive a signal from a satellite while it is above the horizon (10 minutes).
Frequency: 437305kHz
Modulation: GFSK (GR3UH scrambling)
Bandwidth: 15kHz
Callsign: WI2XVF
Link Layer: AX.25 / HDLC
Baud Rate: 9600
https: //www.reddit.com...lp_us_track_data_from/

About satellite
Within the framework of this project, the development of tiny satellites equipped with a solar sail, which, upon completion of their own mission, will find the nearest chip of space debris, attach to it and use solar sail as a space brake. After that, the Cubesail satellite with an attached debris of cosmic garbage will include at high speed into the upper layers of the Earth's atmosphere and will cease to exist, leaving only smoky trail in the atmosphere. Cubesail satellite will be a satellite, the size of the shoe box. In orbit, they will be delivered as an additional cargo when deriving other, larger spacecraft to the orbit. Sunny sail satellite Cubesail, five to five meters satellite, according to the calculations made, will be able to provide force capable of "push" from the orbit space trash of any size.



Rep: (423)
RTL-SDR as a simple imsi catcher
Newer article
I must say right away that it is not possible to make a fake BS! Analysis only

Post has been editedPHPoeniX - 29.12.18, 20:58



Rep: (633)
All with the upcoming NG :-)
Attached Image
I dug up my USB tuner.
Share a file with interesting frequencies for SDRSharp under Windows.


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