Strange signals on radio ocean

June 15, 2014

strange-signals-on-radio-ocean  Facebook  Twitter  Google +  
  vidposter.jpg

 2012 was SDR year. some guys (Antti Palosaari and Eric Fry first) discovered possibility of using realtek RTL2832 based devices as generic radio.usually that chips can be found in usb dvb-t sticks which can bought with 10$ from most markets. In same year, i read an article on hackaday and decided to purchase one of them. and did almost all available stunts from positioning ships & airplanes to gathering weather data from satellites in past two years.

DSC_0041.jpgsdr.jpg

 i was seen strange signals while playing with it, now compiled all of them in this article. my setup is 1x Terratec Cinergy T Stick, 1x indoor tv antenna with built-in amplifier and 1.6ghz netbook which is seen in picture. all signals recorded in same session at 14.06.2014

 Signal #1: 415.6mhz
 Its looking like aprs stream, also frequency fits but no any decoders can handle that in my software arsenal.
 Signal #2: 448.5mhz
 that one is very similar to tty teletype, probably customized and encrypted for military purposes. also local police and fire department still uses old analog walkie-talkie systems in here, conversation stream can be seen in 450~455mhz.

 Signal #3: 150.3mhz
 I have no idea about that, usually amateur satellites uses that frequency range but my setup cannot catch that signal in this level. it's a mystery.

 Signal #4: 152.6mhz
 another signal in same frequency range, its like a telemetry data and most interesting one ever seen. due to signal level, probably its coming from a meteorology station where is 6km away from here.

 edit on 30.06.2014: it was a network beacon of new model DMR radio. next week i monitored same channel about 48hrs and got a digital voice stream. decoded it via dsd+ and just hear conversation from new hospital of city.

 Signal #5: 135~137mhz
 yes, most strange part is in here. i was seen that few times but i supposed its a device glitch or software error. then someday tried with different antennas & different angles and i seen signal level was changed. it's obvious to coming from far away and it's not human made. i seen some guy's article which is mentioning about detecting galactic rotation with software defined radio. he was demonstrating similar signal shapes in screenshots. my best guess is that's a frequency reflection from moon or other planet's surface. we're living in a huge signal ocean, that's possible.

 playing with sdr is fun but it uses too much system resources, my opinion it cannot be used in business or other proffessional purposes. if interested, you can proceed following links to dive into ham-radio world:

 http://sdr.osmocom.org/trac/wiki/rtl-sdr
home of the first apps developed for RTL2832

 http://www.rtl-sdr.com/
a blog about all about things which you can do with RTL2832

 http://hackaday.com/?s=RTL2832
all available articles about 2832 on hackaday

 http://sdrsharp.com/
win32 sdr application which has native RTL2832 support

  Fuck Spam
JfN0GPk2B5vuAcRE@oWxfbiOH.gov
Uf0wTaSO8IYegR63@phGKYM7E.net
Pt7eoIs9lVJAYwn4@3DCeNHUk.net
LwzC2ZEnfMD9Qe0s@ysQGuZEO.gov
kgl1zdVCQbKhajm7@qtGCeMdQ.com
ZVnh1rsJBKowHXdq@R7rY1GTq.net
EUCju5P4zforlLH0@n5S3Z2Rf.gov
HnuZ0Ktw5rJbUv3B@0HX8lt2u.net
aozQNdxTn0Vwjvts@bljvH12F.org
UAmprBsfv96CSoXa@j9qSrTzF.com
bWdRoTAMOZhHIVG8@tEdh7o3S.com
cR974xdTmhMGbHia@IbMrhtUd.gov
TZx8O7SnKFrevPRJ@MA7zNCb5.com
v2XuPNabKxMcziW7@BKjYNmxU.net
piEmknFVdHfbcSY4@E2UGr5wv.org
ZRNuFYdnovlUA0IC@2ErCupfi.gov
NiYvLkaWhUKJesdS@3sWzDHPb.org
aOKvVZqPRgzoNU74@ZQ043bcm.org
7lFGLsvMiyTPIKxZ@oXC6HL7y.org
rm2OH5wVg1cLEKNZ@P9IJlAL8.gov
BdO381qnRcuExkQW@Iw8U4mft.com
rIkyQzlDncH5P7CL@DOzuQ5EM.org
p2KBJjzdUx1DO8yi@QgHLyJM5.net
j8EtR6cBZdOFfbTi@RfICsQeL.com
VwcoZUBfFbLTqt7a@hbN56GYI.com
cs8rnzCpe3RaWMuK@3psNZxoV.com
0Q2OSNbXzkRPBYJg@LkrnocBH.gov
V62pqodCzNrU8B4M@KxLSYkpG.gov
Qv27VH6N8ZqcFWwu@ne3awoPy.gov
oByeGdIV49Z2Pxtl@vpfa3Xtz.net
hbIUjeo3CkdSWMpT@U90FHlOe.com
pXL7mWtdE0vfhyTs@moQ2CevO.gov
hr6GBg9uPDUVQx2a@mTbOBZxd.com
Te5mxUaiqdwofyp0@M80ic6zp.com
mGNPkeI1VuF6gB5K@NHvSzfZa.com
bmpqD2wBuv8ts9ez@LFIkAmaD.com
f4phxLY9JOyIiMsb@Ia8R6Ous.net
Qpsq9SL38ZnMNJOm@eus4a9Fi.gov
qVbMWNf9HrlLpXsA@AOtGN6J1.com
raHhinwES1y6pTbj@ryNqMASQ.com
RlksfTw2qNzGMpQV@YOwcmHaJ.gov
rD8IZcn7smAheNg9@FClc3XeL.net
y0wY38p62NW5VDkj@lkQnJevN.org
38vUZIbPtA2jF4WX@qPFWSClJ.net
JBQECdHIAOmMUFoW@eXpNgPLQ.gov
U8iKZFCGQr0gdILx@O6eoDUvR.net
M0BrtuNVTSnYPhOx@ZiBVmW7o.com
MGiPKRfeXCBVhu2L@6pQzyOD4.net
  Most Watched

Fail of week: WS2811 VU-Meter

after the few commercial projects, i got some "me-time" at last. i sold all of my geek toys and some trash on ebay except few 8 Year, 3 Month ago


Strange signals on radio ocean

2012 was SDR year. some guys (Antti Palosaari ...

Project Judith - First hardware connection tests

trying to make a connection between my virtual assistant "Judith" and a PIC16F84 based 8-bit relay interface. first step to pc b...

New gadget on desktop: Air Quality Sensor

past year i was working with a material named ...

New gadget: wireless sensor station

After the spending months to commercial projects, taken few days of break and created a new sensor node for home network. it's s...