Mar
18
2016
0
Apr
20
2013
0
Mar
12
2013
0

RTL SDR Software Defined Radio running on Android phones and tablets with Ice Cream Sandwich

RTL SDR Software Defined Radio running on Android phones and tablets running Ice Cream Sandwich.

photo of nexus 7 tablet running sdr touch radio software

Take a phone or tablet running Android Ice Cream Sandwich, a USB cable wired for OTG, and a $20 USB TV Stick, and you have a touch screen radio scanner capable of tuning anywhere from 52-2200Mhz.

From their website:

“Turns your mobile phone or tablet into a cheap and portable software defined radio scanner. Allows you to listen to live on air FM radio stations, weather reports, police, fire department and emergency stations, taxi traffic, airplane communications, audio of analogue TV broadcasts, HAM radio amateurs, digital broadcasts and many more! Depending on the hardware used, its radio frequency coverage could span between 50 MHz and 2.2 GHz. It currently demodulates WFM, AM, NFM, USB, LSB, DSB, CWU and CLW signals.

You can get a compatible USB receiver for under $20 online from eBay. Just plug in your rtl-sdr compatible USB DVB-T tuner into your Android device using a USB OTG Cable and turn on SDR Touch. For list of supported Realtek RTL2832U based dongles, please see the end of the description. Those features are supported via a driver that you will need to download from Google Play.”

http://sdr.martinmarinov.info/

Written by owner in: 3G,4G,Bluetooth,DECT,GPS,GSM,Tetra,WiFi |
Apr
27
2012
0

RTL-SDR cheap USB TV dongles become super cheap USRP radios!!!

That’s right folks. Software radio just became mainstream. Up until last summer you paid £1000+ for a USRP, then came along the £120 Funcube dongle. Now you can learn all about SDR for £20.

You can now use a £20 USB DVB-TV Stick to receive any frequency from 64-1700MHz at a high bandwidth sample rate of 2.8MS/s. Required chipset is RTL2832U & Elonics E4000 tuner combo. Known good units are EzCapTV 668 & 666 units, along with a host of similar boards.

sdr.osmocom.org/trac/wiki/rtl-sdr

What has been successfully tested so far is the reception of FM/AM radio, TETRA (police, ambulance, fire), GMR (sat phones), GSM (mobile phones), ADS-B (aircraft data) and POCSAG (pagers).

Go and type RTL-SDR into Youtube and you’ll find loads of great demo videos – like these:

https://www.youtube.com/watch?v=Z0hEquzLsWU

Here’s another good page : http://www.rtlsdr.com/

Some useful Windows SDR# software here

Written by owner in: 3G,DECT,GPS,GSM,Masts,Tetra,Uncategorized |
Apr
19
2011
0

Interesting new products: Ubertooth, Funcube Dongle Pro and Sparkfun IOIO for Android.

Ubertooth, Funcube Dongle Pro and Sparkfun IOIO for Android.

Three brand new innovative products, all coming out around the same time. All in limited supply, and all completely brilliant!

 

Ubertooth – Bluetooth sniffing for under £100.



Until now sniffing and injecting packets into Bluetooth communication hasn’t been possible for the man in the street.

The Ubertooth USB dongle will change this for under £100.

The USB adapter just grabs a chunk of 2.4GHz spectrum and your PC processes it. Makes passive detection of Bluetooth devices possible without shelling out £1000 for a USRP. It will be possible to predict Bluetooth hopping pattern. It will also be possible to do man-in-the-middle attacks using two Ubertooths.

UK Buyers can pre-order from RFIDIOt.org. US buyers can pre-order from HakShop

 

FUNcube Dongle Pro – all frequency audio scanner for under £100.


 

Another USB dongle featuring three SMD chips to perform a custom task. This dongle is very different from the Ubertooth, but in some ways more amazing.

It can grab up to a 80KHz chunk of radio spectrum from anywhere between 64MHz and 1700MHz (although there is a dead spot between 1100MHz and 1270MHz). It will basically do most things your fancy-pants £1000+ standalone radio scanner will do, for just £100. Basically good for speech & data, but not really video. Works with Windows. Mac OSX & Linux. Appears to PC as a USB audio device & a HID device. Plenty of open source software available to drive it. Interestingly the FUNcube Pro is mentioned on the Osmocom Tetra page.

The only downside is that each batch the designer has made are currently selling out in 2 minutes, when he releases them. Find out more at FUNcube Dongle

 

Sparkfun IOIO for Android – attach anything to your Android smartphone for under £50.

A really simple way to attach almost any electronic component to your Android Smartphone or Tablet. Thousands of uses will be found. Things will be invented!

This board consists of a USB to Everything adapter & a library of script & device drivers (a bit like an Arduino sketch but in Java). All the computing power & sensors in your Android smartphone available to motors, LEDs, weather stations, robots, PIRs, analog sensors, digital sensors. Just imagine the possibilities. Runs on Android 1.5 & up, so even all those sub-£50 used Android phones will work with it.

www.SparkFun.com

Written by owner in: 3G,Bluetooth,GPS,GSM,Tetra,Uncategorized,WiFi |
Sep
27
2008
0

Allergy to modern gadgets is ‘posing health risk to millions’

Taken from an article by Lisa Adams of the Scottish Daily Record about Electrosensitivity – published 08/09/2008 :

IT’S called an allergy to modern life and half of Scots in the next 10 years could be at risk from this crippling illness, according to scientific research.

Victims of the condition, which is triggered by electromagnetic waves from mobile phones, power lines, microwaves and computers, suffer headaches, crushing chest pains, nose bleeds and a loss of feeling in arms and legs.

Experts report that up to 1.5million people in the UK already have their lives blighted by electro-sensitivity, with symptoms that also include heart palpitations, tiredness, fainting, light sensitivity and skin problems.

Mike Bell, chairman of the Radiation Research Trust, said: “We are seeing a significant increase in enquiries from individuals suffering from these symptoms.

“We’re concerned that many people could be living with health-related electro-sensitivity symptoms without realising the cause.

“Doctors in the UK are not trained to recognise this condition. They could be misdiagnosing patients and treating them with drugs rather than investigating the cause.”

One victim has compared the condition with life as a human aerial – their body overreacting to electrical waves in the environment. Today, as a scientific conference opens in London, public health expert Dr Gerd Oberfeld will predict that if current trends continue, up to 50 per cent of people could suffer from electro sensitivity symptoms in the next 10 years.

The World Health Organisation is also backing research, stating that: “Electrical hypersensitivity is a real and sometimes disabling condition.”

Sufferers are particularly vulnerable to the £2.5billion police communication system Tetra – Terrestrial Trunked Radio – which has been introduced throughout the UK. In the past three years, more than 1000 masts have been erected in Scotland. They pulse at 17.6hertz – above the 16Hz frequency the Government’s Independent Expert Group on Mobile Phones warns might affect brain activity.

Experts say radio waves at this frequency can cause calcium to leak from the brain, causing damage to the nervous and immune systems. If the masts are less than 15 metres high, they don’t need planning permission.

Former Norwegian Prime Minister Harlem Brundtland suffers from electro-sensitivity.

She said: “I felt a local warmth around my ear. But the agony got worse. It turned to discomfort and headaches every time I used a mobile phone.

“Some people develop sensitivity to electricity and radiation from equipment such as mobile phones or PCs.

“If this can lead to adverse health effects such as cancer or other diseases, we do not know yet. But I think we should follow the precautionary principle.”

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