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--- project:sdr [2012/12/16 02:09]
jenda [standalone, radio-observer.brm]
+++ project:sdr [2013/05/16 09:15] (current)
ruza
@@ Line 17: / Line 17: @@
 ===== Status =====
-We have SDR station on the table near our library (RadioLab), and some antennas on the roof. A radio-adsb.brm computer is using RTL-SDR to generate a live map of airplane traffic (ADSB-based) over Prague. Other activities (TETRA etc.) are planned or work in progress.
+We have SDR station on the table near our library (RadioLab), and some antennas on the roof. A radio-adsb.brm computer has been using RTL-SDR to generate a live map of airplane traffic (ADSB-based) over Prague. Other activities (TETRA etc.) are planned or work in progress.
+===== What is available =====
+  * Several Linux computers with GnuRadio and rtl-sdr drivers installed and with SSH/VNC access.
+  * TB of storage space for your captured signals :)
+  * Helix and wire antennas on brmlab rooftop covering most of Prague.
+  * 400MHz YAGI pointing on <del>Ruzyně</del> Václav Havel Airport.
+  * CB transceiver.
+  * Several PMR446 walkie-talkies.
+  * Satellite card (TODO)
+  * HAM portable 2m/70cm transceiver upon request.
+  * Portable 400MHz YAGI upon request.
+  * advice related to Baofeng UV-5R device
+===== Projects =====
+Active:
+  * Hunting for radiosondes
+  * shortwave HAM (building TRX)
+Past and future:
+  * ADSB (planes)
+  * Hunting for radiosondes
+  * TETRA
+  * NOAA and other satellite images
+  * …more to come ;)
 ==== TODO ====
-  * setup [[http://www.websdr.org|WebSDR]]
+  <del>* setup [[http://www.websdr.org|WebSDR]]</del>
 ===== Hardware =====
@@ Line 34: / Line 60: @@
 === Elonics E4000 tuner ===
-    * 53 to 2211 MHz
+  E4K range: 53 to 2210 MHz
+  E4K L-band gap: 1106 to 1250 MHz
 {{:project:rtlsdr-elonics.jpg?400}}
@@ Line 47: / Line 75: @@
 ===== RadioLab =====
-==== standalone, radio-observer.brm ====
+==== standalone, radio-mgmt.brm ====
-i5, 4 GB, 40 GB, 12.04
+Pentium D, 1 GB, 40 GB, Ubuntu 12.04
 "public" computer, you can tune in GQRX (run ~/gqrx/gqrx), experiment with gnuradio…
@@ Line 55: / Line 83: @@
 **Remote listening** - tune radio in brmlab, listen at home!
-VNC: <code>xtightvncviewer -quality 7 -encodings tight 192.168.77.34:0</code>
+VNC: <code>xtightvncviewer -quality 7 -encodings tight 192.168.77.35:0</code>
 Maybe you will need to start a VNC server:
@@ Line 66: / Line 94: @@
   * Audio: Vorbis compressed (for listening)
-<code>ssh radio@192.168.77.34 "parecord --channels=1 | oggenc -r -C 1 -" | ogg123 - # ~ 80kb/s
+<code>ssh radio@192.168.77.35 "parecord --channels=1 | oggenc -q "-1" -r -C 1 -" | ogg123 -</code>
-ssh radio@192.168.77.34 "parecord --channels=1 | oggenc -q "-1" -r -C 1 -" | ogg123 - # ~ 35kb/s</code>
 Uncompressed (e.g. for further processing)
-<code>ssh radio@192.168.77.34 "parecord --channels=1" | aplay -r 44100 -c 1 -f S16_LE</code>
+<code>ssh radio@192.168.77.35 "parecord --channels=1" | aplay -r 44100 -c 1 -f S16_LE</code>
 Average delay of this chain is 1-2 seconds.
-==== KVM 1, radio-services.brm ====
+**Tunnel raw data** - connect remote radio to your local receiver
+ <code>ssh -A -L1234:192.168.77.35:1234 username@nat.brmlab.cz 'ssh radio@192.168.77.35 "killall rtl_tcp; rtl_tcp -a 0.0.0.0"'</code>
+Then start gqrx locally with <code>device="rtl_tcp=127.0.0.1:1234"</code>
+Works for me with 300000Hz bandwith.
+==== radio-services.brm ====
 P4, 1 GB, 60 GB, 10.04
@@ Line 79: / Line 112: @@
 currently there is a web-server with [[http://radio-services.brm:8080/VirtualRadar/GoogleMap.htm|Virtual Radar]] map of planes running there
-==== KVM 2, radio-mgmt.brm ====
+==== radio-agenda.brm ====
-==== KVM 3, radio-agenda.brm, ====
 celeron, 512 MB, 80 GB, 10.04
-==== KVM 4, radio-adsbrx.brm ====
+==== radio-adsbrx.brm ====
 celeron, 512 MB, 40 GB, 10.10
@@ Line 93: / Line 124: @@
 ==== radio-wxsat.brm ====
+?
@@ Line 151: / Line 183: @@
   * [[http://metroweb.cz/diskuze/viewtopic.php?p=64750#p64750]] - frequencies used for FM communication in Prague subway
   * [[http://old.avc-cvut.cz/avc.php?id=3622]] - FEL ČVUT course on digital cellular network (czech)
+  * [[http://sdr.martinmarinov.info]]
   * [[http://people.xiph.org/~xiphmont/demo/neil-young.html|24/192 Music Downloads ...and why they make no sense]]
   * See also: [[:event:dsp#Zdroje|Digital Signal Processing#Zdroje]]