I recently bought a Newsky DVB-T Dongle with a
RTL2832U / E4000 chipset. This is the type of Dongle
being used by Amateurs and others as a wideband SDR.
Using the provided BlazeHDTV 6.0 Windows software it
was possible to receive DVB-T transmissions sent by
my USRP2 code on 1.3 GHz, see above screenshot.
The reason I look a bit green at the edges in the picture
is because I was Chroma Keyed onto a backdrop of my
antennas. I am staring into space because I was looking
at a monitor in the shack. The picture is a full screen grab
of the live transmission.
The reason I look a bit green at the edges in the picture
is because I was Chroma Keyed onto a backdrop of my
antennas. I am staring into space because I was looking
at a monitor in the shack. The picture is a full screen grab
of the live transmission.
For interest the parameters were DVB-T, 7 MHz Channel,
2K mode, QPSK modulation, 3/4 FEC, 1/16 guard with a
video rate of 5.8 Mbits/s, frequency 1.3 GHz and power
about 2 watts. These parameters were an arbitrary choice.
2K mode, QPSK modulation, 3/4 FEC, 1/16 guard with a
video rate of 5.8 Mbits/s, frequency 1.3 GHz and power
about 2 watts. These parameters were an arbitrary choice.
I had to use Windows to display the received pictures
because I could not get Linux to create the /dev/dvb
device for the Dongle. A quick Google search showed
that I am not the only person having this problem.
The SDR software works perfectly on Linux.
How did you get the stick to tune 1.3GHz - or were you using a converter?
ReplyDeleteI just told the BlazeHDTV software
ReplyDeleteto scan 1300000 - 1320000 KHz and
it locked onto my signal. The DVB-T
Tuner uses the RTL2832U / E4000 chipset
which is the same chipset being
used by the osmosdr
http://sdr.osmocom.org/trac/wiki/rtl-sdr
people and will tune part of 23 cms.
OK thanks for that - would have thought the software would limit the frequencies you can tune to the tv bands. Good news keep up the work - enjoy reading your missives.
ReplyDeleteYes so did I but if you put rubbish data
ReplyDeletein it, it just says enter a frequency between
10MHz and 2GHz. However it will only scan
properly the first time after starting the
program. If you try to scan again it won't
do it, you then have to restart the program,
weird!
The program also works with DVB-S too. Not bad
for £12 for the DVB-T dongle and Blaze software.