Discussion:
USB TV tuner stick and fedora's tvtime
JD
8 years ago
Permalink
Has anyone been able to make this work.
The USB tv tuner I thought I would get for cheap is
http://www.ebay.com/itm/USB-2-0-TV-Stick-Tuner-Receiver-Adapter-Worldwide-Analog-for-PC-Laptop-DVD-/282323120651?hash=item41bbc4f20b:g:inEAAOSwd4tUF~E1

If it will not work, what does work with tvtime ?

PS: I was thinking of watching digital VHF/UHF broadcasts.
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Doug
8 years ago
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Post by JD
Has anyone been able to make this work.
The USB tv tuner I thought I would get for cheap is
http://www.ebay.com/itm/USB-2-0-TV-Stick-Tuner-Receiver-Adapter-Worldwide-Analog-for-PC-Laptop-DVD-/282323120651?hash=item41bbc4f20b:g:inEAAOSwd4tUF~E1
If it will not work, what does work with tvtime ?
PS: I was thinking of watching digital VHF/UHF broadcasts.
_______________________________________________
This is probably the sdr radio gadget that has an apparently fairly
large following on the net. Check out sdr-radio-com and sdr web radio.
There's free software on the web,
mostly for Windows, but some for Linux. (When I looked into the Linux
software some time ago, it was complex and had to be compiled and
customized for your system. Don't know
if any plug-and-play s/w for Linux exists at this time.) The last I
heard the TV that these things are designed to receive is a European
system; it is unlikely to work as a TV
receiver in the US. eBay is not the only source—check out sdr radio
dongles, and also Google for sdr. There are sdr receivers from the $10
range up to hundreds of dollars,
some of the differences being the number of digital bits in the
demodulator, and the capability of some units to work as a transceiver
for amateur radio. Many if not
most of these devices will receive signals up into the low microwave
region, while many of them work poorly, if at all, in the HF bands
without what's called an up-converter.

Hope that helps. --doug, WA2SAY
--
Blessed are the peacemakers...for they shall be shot at from both sides.--A.M,Greeley
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stan
8 years ago
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On Fri, 13 Jan 2017 16:52:48 -0700
Post by JD
Has anyone been able to make this work.
The USB tv tuner I thought I would get for cheap is
http://www.ebay.com/itm/USB-2-0-TV-Stick-Tuner-Receiver-Adapter-Worldwide-Analog-for-PC-Laptop-DVD-/282323120651?hash=item41bbc4f20b:g:inEAAOSwd4tUF~E1
If it will not work, what does work with tvtime ?
If Doug is correct, what you want to research is rtl2832. The linux
kernel includes a driver for this device, and there is a library
package for it in the Fedora repositories. I don't know if it will
work with tvtime, but a search might turn up someone who has used it and
how they did it.
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John Pilkington
8 years ago
Permalink
Post by JD
Has anyone been able to make this work.
The USB tv tuner I thought I would get for cheap is
http://www.ebay.com/itm/USB-2-0-TV-Stick-Tuner-Receiver-Adapter-Worldwide-Analog-for-PC-Laptop-DVD-/282323120651?hash=item41bbc4f20b:g:inEAAOSwd4tUF~E1
If it will not work, what does work with tvtime ?
PS: I was thinking of watching digital VHF/UHF broadcasts.
I used to use tvtime several years ago, when it was strictly an analog
system. I haven't followed later developments. The url also says the
device is analog. I don't know how many analog tv signals will still
exist in your area; perhaps fm radio.

John P

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JD
8 years ago
Permalink
...
Thank you Doug Stan and John
I also did find the digital version of same dongle.
I will follow up on sdr website, and look into rtl2832
and associated libs and apps (hopefully gui).

Cheers,

JD
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JD
8 years ago
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...
Hi Stan, Doug and John,

I found this RTL-SDR FM+DAB DVB-T USB 2.0 Digital TV Stick RTL2832U +
R820T Tuner Receiver at:
http://www.ebay.com/itm/RTL-SDR-FM-DAB-DVB-T-USB-2-0-Digital-TV-Stick-RTL2832U-R820T-Tuner-Receiver-/222264849114?hash=item33c00472da:g:jfcAAOSwYIxX7Ghk

I have not ordered it yet, pending your feedback about it.


I installed these rpms (along with their dependencies:

gr-osmosdr x86_64
gr-osmosdr-devel x86_64
gr-osmosdr-doc noarch
rtl-sdr x86_64
texlive-sdrt noarch
texlive-sdrt-doc noarch

Installing for dependencies:
PyOpenGL noarch
PyQwt x86_64
gnuradio x86_64
gnuradio-devel x86_64
python-cheetah x86_64
python-markdown noarch
python-pygments noarch
qwt x86_64
qwt5-qt4 x86_64
scipy x86_64
texlive-xyling noarch
texlive-xypic noarch
texlive-xytree noarch
uhd x86_64

What else do I need installed?

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Doug
8 years ago
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...
See this url on DVB-T:
http://www.highdefforum.com/local-hdtv-info-reception/71105-dvb-t-available-usa-las-vegas.html
Also note that the OS requirements (as per the spec) do not include
Linux, if that makes any difference to you.
Also note that the ad (at least one I looked at) is in French--maybe it
works in France.

OTOH: For $6.95, what do you have to lose?

--doug, WA2SAY
...
--
Blessed are the peacemakers...for they shall be shot at from both sides.--A.M,Greeley
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JD
8 years ago
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...
But the driver rtl2832 is reported working in Ubuntu.
Must not be all that hard to port it to Fedora.
Also, it is a module in my currently running kernel.
And report on page https://ubuntuforums.org/showthread.php?t=1905057
that it works.


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jdow
8 years ago
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...
JD, seeing as how you are coming from a comcast address you will not be able to
receive (quality/modern) TV broadcasts on the dongle. (There is a Windows tool
that VERY poorly receives NTSC signals. There are still some sprinkled around if
you look for them.) It will not receive any legal DTV signal in the US. (I need
to double check; but, I don't believe DVB-T is legal in the US for ham use.
{^_-} If it is legal it'd be fun to get a LimeSDR and setup a digital TV
transmitter.)

{^_^} Joanne
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JD
8 years ago
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I will know more and report back after the device arrives :)
Thanks for all the links.
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stan
8 years ago
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On Sun, 15 Jan 2017 12:25:33 -0700
...
I haven't used an rtl2832 for tv reception, so I don't know what
packages you need installed. rtl-sdr is a good one to have because it
provides a library api to the device, and will probably be used by any
application programs.

I see this in the page you pointed to.

Note:
Please make sure your region can receive DVB-T signal.

Can you receive digital signals in your area? In my area, they need a
tall antenna because the transmitter is partially blocked. Unless you
live very close to the transmitter, I doubt the little antenna that
comes with this will work. It should work for fm with a reasonably
strong signal (in an urban area).

This page seems to be from someone who has done what you want to do.

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stan
8 years ago
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On Sun, 15 Jan 2017 13:57:32 -0700
...
This video seems to suggest that dvb-t is not the standard in North
America, where ATSC is used for over the air digital transmission. He
says that a dvb-t dongle won't work in North America. ATSC dongles are
also available, but much more costly.

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JD
8 years ago
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...
Sorry for incomplete reply.
I checked
https://en.wikipedia.org/wiki/List_of_digital_television_deployments_by_country#United_States
and USA does not support (does not allow????) dvb-t signaling.
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John Pilkington
8 years ago
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I quote from the web page:

Note:
Please make sure your region can receive DVB-T signal.

... which is likely to be true mainly in Europe, Australia,... If you
are in the US and if Over-The-Air TV is accessible for you it's likely
to be in ATSC format. Google tv standards.

Hardware and software for TV reception must fit your location. I don't
know where you are. linux compatibility cannot be assumed, and chips
may be substituted without notice. All those pictured system disks will
be for Windows - and the pictured antennae will/may work only very near
a transmitter.

For 'tuners' the main formal source of info is the linux-media website,
but there's a lot of anecdotal stuff around too. Last time I looked the
linux-media list was heavily developer-centric.

The proposed purchase is certainly cheap, but I doubt that you will find
it useful. Do you want a system that will work, or an excuse to
cultivate frustration?

I've used MythTV for years, but getting a reliable system isn't trivial.
...
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JD
8 years ago
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...
I hope that I might find amature stations that are broadcasting in the
DVB-T standard.
At least I hope to find such stations within the 150-250 mile reception
range of an external antenna.
A little scanning never hurt anyone :)
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jdow
8 years ago
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Now, I'm using it on the more powerful Windows machine I have. But, I can tell
you I have received ham radio signals from around 3.8 MHz up through 1.2 GHz on
appropriate ham bands. I've also received railroad dispatchers (161 MHz region),
and innumerable pager transmitters, aircraft ADSB, ATC, FM broadcast, NOAA
broadcasts (162.5 MHz region), and so forth. Others use them for satellite
weather maps send down from space craft. Most anything between "0 MHz" (hundred
kHz-ish frequencies) through about 13.5 MHz (null at 14.4 MHz) and from about
20-25 MHz up through 1.7 GHz. Some frequencies require suitable
preamplification. All frequencies require you get the dongle as far from your
computer, and other noise sources, as you can get it, of course. Good advice
still exists on the ultra-cheap-sdr list I mentioned last rock.

I hope you have fun with it.

{^_^} Joanne
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Ed Greshko
8 years ago
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Post by stan
Please make sure your region can receive DVB-T signal.
Indeed...

https://en.wikipedia.org/wiki/DVB-T#Americas

and

https://en.wikipedia.org/wiki/DVB-T2#Market_adoption
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jdow
8 years ago
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...
Might I make three suggestions?

First, visit http://www.rtl-sdr.com and check out their V.3 dongle,
http://www.rtl-sdr.com/new-rtl-sdr-blog-units-now-available-in-store-hf-via-direct-sampling-software-switchable-bias-tee-less-noisespurs/"
They are garden variety DVB-T dongles of the correct sort for use in SDR work.

Second check out the ultra-cheap-sdr google group mailing list. It is dedicated
to both Linux and Windows uses.

Third, you might be interested in snarfing up Leif Asbrink's "Linrad". It is a
nice, if complicated, piece of work.

Those three suggestions should get you well on your way to getting some form of
SDR working on your system without a lot of the Gnu Radio aches and pains and
about as clean an 8 bit SDR dongle as you can get.

{^_^} Joanne
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