ati tv wonder

[bjurin torsen]

Is there a way to set up an ATI TV Wonder hd 750 as an SDR   in SDR#?

[Adam Nielsen]

> Is there a way to set up an ATI TV Wonder hd 750 as an SDR in SDR#?

Have a look at the (short) SDR FAQ here:

http://www.amateur-radio-wiki.net/index.php?title=SDR_FAQ

Cheers,
Adam.

[Priyasloka Arya]

some other TV tuner can act as SDR ,like IO-DATA GV-TV100(USB TV tuner) which has MIRICS chip. Leif Asbrink suggested me i could try one. these USB TV dongles are only available in Japan(via agent). I will be getting a used USB TV dongle via Buyee.jp for 40$. The good news isMirics guys are coming with new SDR , enroll in www.sdrplay.com for pre-release updates.

Thanks 

Priyasloka Arya

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[Adam Nielsen]

> some other TV tuner can act as SDR ,like IO-DATA GV-TV100(USB TV
> tuner) which has MIRICS chip.

Is there support for these in the common SDR libraries? I only heard
speculative things about the Mirics chips.

> The good
> news isMirics guys are coming with new SDR , enroll in
> www.sdrplay.com for pre-release updates.

Wow that's a super uninformative website - it doesn't even tell you
what it's about! What is it about? Are there any details on this new
SDR from Mirics?

Cheers,
Adam.

[Leif Asbrink]

Hello Adam,

Have a look here:
http://www.sm5bsz.com/linuxdsp/hware/mirisdr/mirisdr.htm
(and sub-pages)

There is much more to say about this chip set, but I did
not have time yet. Have a look at this video:
https://www.youtube.com/watch?v=ka_YORRjldY

Cheers

Leif

[Adam Nielsen]

Hi Leif,

Thanks for the info!

It looks like the chip is capable of reception from 144kHz to 2GHz, but
due to manufacturing decisions (not connecting the multiple antenna
inputs) it is usually only usable between 64MHz and 960MHz. I can't
find much information about what sort of bandwidth it is capable of.

I am not so sure whether this chip is that interesting - is it any
better than the RTL2832? Certainly the frequency range is more
limited. I am sorry if this is covered on your web page but looking at
it it is far too technical already for my limited understanding of RF!

Cheers,
Adam.

[Priyasloka Arya]

Hi 

Mirics guys in their last mail , promised their new SDR would be promising. They will share a  spec soon. They have created a teaser website www.sdrplay.com for this.

If it is going to based on MSi001 tuner not sure. Mirics SDR details can be found http://www.mirics.com/FlexiTV%20MSi3101%20SDR%20USB%20Dongle%20User%20Guide%20R1P0.pdf.

Reply from Leif to answer your questions:

------------------------------------------------------------------------------

 1>what is the ADC bit for MSi3101 ? 8 bit/10 bit

It is user selectable:
1) 8 bit (504_S8) Max 12.096 MHz
2) 8 bit (504_S16) Max 12.096 MHz
3) 10+2 bit (384_S16) Max 9.216 MHz
4) 12 bit (336_S16) Max 8.064 MHz
5) 14 bit (252_S16) Max 6.048 MHz

The max frequencies are probably not very accurate.

> 2>Is it continuous range from (150 Kilohertz to 2 Gigahertz).

No, The data sheet specifies:
LW/MW/SW (150 kHz - 30 MHz)
VHF Band II (64-108 MHZ)
Band III (162-240 MHz)
Band IV/V (470-960 MHz)
L-band (1450-1675 MHz)

I think the actual coverage is wider, but I do not know the details.

> 3>Can it effective for a SDR, sw support/driver support

Yes. Driver can be downloaded like this:
git clone http://code.google.com/p/libmirisdr-2

---------------------------------------

Mirics SDR was 65 pound and costly for me. Leif is using Logitec LDT-1S310U/J, which is same configuration as Mirics SDR

Check this forum for compatible hardware

http://sdr.mirics.com/forum/showthread.php?tid=3/

Logitec dongle is not available anymore so i ordered IO-DATA GV-TV100 used dongle from Japan for 40$(via agent www.buyee.jp).

Thanks 

Priyasloka  

[Adam Nielsen]

Hi Priyasloka,

Interesting, thanks for the details! It does look like this device is
not so attractive (unless you perhaps have specialised needs) but
perhaps their next device will be moreso? It would be interesting to
see whether they could beat the HackRF on specs and price, as I believe
this is currently one of the best SDR devices in a low(ish) price
bracket.

Cheers,
Adam.

[Priyasloka Arya]

Hi 

Thanks you have reminded about HACK RF. HACK RF will be available for all (after kickstarter commitment) in mid july from many stores including nooelec.

http://www.nooelec.com/store/sdr/sdr-receivers/hackrf-one.html#.U6IdM5RdXr4/

It is 300$ device , still affordable to many.

Though half duplex, HACK RF is promising.

Thanks

Priyasloka Arya 

 

[Leif Asbrink]

Hi Adam,

> It looks like the chip is capable of reception from 144kHz to 2GHz, but
> due to manufacturing decisions (not connecting the multiple antenna
> inputs) it is usually only usable between 64MHz and 960MHz.

Yes.
Modifying dongles is possible however (if you have a microscope...)

> I can't find much information about what sort of bandwidth it is
> capable of.

About 10 MHz. Contrary to RTL2832 it samples with adequate resolution.
14 bit below 6 MHz or so.

> I am not so sure whether this chip is that interesting - is it any
> better than the RTL2832?

Yes. It is designed for SDR while RTL2832 is NOT designed for SDR.

> Certainly the frequency range is more
> limited. I am sorry if this is covered on your web page but looking at
> it it is far too technical already for my limited understanding of RF!

There are fundamental architectural differences. The Mirics dongle
will allow the reception of a weak FM station a couple of hunred kHz
from a very strong station. RTL2832 will not.

Some day I may upload easy to understand comparisons for that,
but at the moment my agenda is full with other things.

73

Leif

[Adam Nielsen]

Hi Leif,

Thanks for the info.

> There are fundamental architectural differences. The Mirics dongle
> will allow the reception of a weak FM station a couple of hunred kHz
> from a very strong station. RTL2832 will not.

What exactly makes this the case? Is it the increased bit depth or
something else?

> Some day I may upload easy to understand comparisons for that,
> but at the moment my agenda is full with other things.

Not a problem, you have answered most of my questions already, so many
thanks!

Cheers,
Adam.

[Leif Asbrink]

Hi Adam,

Mirics has a bandpass filter that can be set to 200 or 300 kHz (or wider.)
This filter can be centered at for example 300 kHz which would mean that
the FM signal would appear from about 200 to 400 kHz on one side of
the center frequency. The dynamic range will be determined by the circuits
in front of the analog filter and by reciprocal mixing. I have not yet
evaluated this.

73

Leif

[Leif Asbrink]

Hi Adam,

The Mirics chip has a bandpass filter that can be set to a bandwidth
of 200 or 300 kHz (or wider.) This filter can be centered at for
example 300 kHz which would mean that a signal would appear from
about 200 to 400 kHz on one side of ohe center frequency. The

dynamic range will be determined by the circuits in front of the

analog filter and by reciprocal mixing. One might sample at a fairly
high rate to make the computer add a filter that improves the stopband
attenuation of the built-in analog filter. I have not yet evaluated this
properly. You can get an idea at 1:04:23 in this video:
https://www.youtube.com/watch?v=ka_YORRjldY

73

Leif





Adam Nielsen <a.ni...@shikadi.net> wrote:

[Siegfried Jackstien]

Just look in the specs for the fcdpp ... (uses same tuner but with
lna/preamp plus some filtering added)

There is a gap between 240 and 420 (some dongles work down to 400 in uhf but
NOT ALL!!!!) ... but no other gap!

I specially ordered a dongle with that slightly wider tuning range from
howard cause I wanted to use (or I do use) it for tracking weather balloons
(weather radio sondes) on 402-406 megs

Best overall solution maybe would be

Use a mirics dongle ... and add shortwave inputs plus filtering and preamp
(like already done in fcdpp) ...

Then you have biggest available bandwidth ... plus biggest available dynamic
range and tuning range

Dg9bfc

Sigi



> -----Ursprüngliche Nachricht-----
> Von: ultra-c...@googlegroups.com [mailto:ultra-cheap-
> s...@googlegroups.com] Im Auftrag von Priyasloka Arya
> Gesendet: Mittwoch, 18. Juni 2014 23:07
> An: ultra-c...@googlegroups.com
> Betreff: Re: [ultra-cheap-sdr] Mirics MSi3101 (was: ati tv wonder)

> <mailto:ultra-cheap-sdr%2Bunsu...@googlegroups.com> .
> To post to this group, send email to ultra-cheap-
> s...@googlegroups.com.

[Larry Dighera]

You can pose questions here: <http://sdr.mirics.com/forum/>.

On Wed, 18 Jun 2014 12:48:18 +1000, Adam Nielsen <a.ni...@shikadi.net> wrote:

>Wow that's a super uninformative website - it doesn't even tell you
>what it's about! What is it about? Are there any details on this new
>SDR from Mirics?

1897:
Radio has no future.
--Lord Kelvin, President of the Royal Society

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