IC Logo, what is a company name?

https://drive.google.com/file/d/0Bw4tXXvyWtFVaFp3SnRxa3lCODg/view?usp=sharing

I was wander, if someone could identify chip maker, IC is a RF receiver for satellite top box, 950-2150MHz.
I want to interface part to arduino DUE, but w/o knowing part number - I2C specification, it’s going to be complicated.

There is also a chance that logo is a fake, some kind of handcraft “copyright” protection.

Google "semiconductor ic logos" for various collections -- you will probably have to look through a lot of them.

Yea, I realized to search logos after I post a question, 've been looking over 100-200 w/o any luck.
What I can't understand, that IC is quite specific, and there are not too many chip makers capable to design and produce RF product.
Digikey, for example, on search pattern "tuner" -> in rf receivers section, listed 163 IC but only 8 makers.

If it is a proprietary IC (which seems likely), then knowing the maker probably won't lead to any documentation on it.

Even if you found the manufacturer you might have difficulty getting any documentation on it. I used to work for the worlds biggest set top box manufacture and all the RF tuner silicon was always locked down with non disclosure agreements and hardware lock algorithms. Most would not supply a data sheet without one and an individual has no chance of getting one

Magician:

https://drive.google.com/file/d/0Bw4tXXvyWtFVaFp3SnRxa3lCODg/view?usp=sharing

IC is a RF receiver for satellite top box, 950-2150MHz.

Doesn't seem to be in an RF circuit though, probably a microcontroller/microprocessor/decoder.

I used to work for the worlds biggest set top box manufacture and all the RF tuner silicon was always locked down with non disclosure agreements and hardware lock algorithms. Most would not supply a data sheet without one and an individual has no chance of getting one

Something I was not expecting , my plan A was to buy a tuner, open up a case and check what is the chip, than download a data sheet with full set of I2C API spec. Than I’d have good (commercial) quality RF scanner based on arduino. There is seems no problem with sub-GHz silicon tuners, from SiliconLab or TI, Si4432/4463 CC1101/1200. I already published a project with Si4432.
Now plan B, have to find a mixer - downconverter around 2.4GHz (open for public), than Si4432 may get 1.440GHz to 2.160.

To MarkT: there is full picture, SHARP BS2S7HZ7903 tuner.
https://drive.google.com/file/d/0Bw4tXXvyWtFVWmV2RmxWNlpVVEk/view?usp=sharing
https://drive.google.com/file/d/0Bw4tXXvyWtFVWmV2RmxWNlpVVEk/view?usp=sharing

For small RF building blocks try MiniCircuits.

KeithRB:
For small RF building blocks try MiniCircuits.

I doubt they have any module in 3-5$ range >:(
IMHO, hobby project is attractive when it stays in low cost area, so you are not worry to much if accidentally swapped power lines and throw burnt module in garbage can. Or some ideas you want to try, may not working.

I did not look very hard, but you can easily find mixers in the $7-10 range - which is pretty good for single quantities.

Magician:
I doubt they have any module in 3-5$ range >:(
IMHO, hobby project is attractive when it stays in low cost area, so you are not worry to much if accidentally swapped power lines and throw burnt module in garbage can. Or some ideas you want to try, may not working.

If $5 is your price limit you have the wrong hobby. I think KeithRB gave a valuable link.

You might like to look at the tv dongles.

Some of them with the right software can receive anything from 30 MHz to 2 plus gigs.

There is even a spectrum analyser type app written by the radio hams.

Search term is SDR , software defined radio.

http://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/

If $5 is your price limit you have the wrong hobby. I think KeithRB gave a valuable link.

I don't think so. You just have no idea how much it would cost for all radio, I mention only mixer, but it 'd require LNA, VCO-PLL, and many other parts. There is no logic in building a tuner, if you can buy one for 5$. Well, if some paranoiac didn't lock a hardware/software architecture.

I have an idea for indoor localization, and I need 2 receivers just to try.

You might like to look at the tv dongles.

Some of them with the right software can receive anything from 30 MHz to 2 plus gigs.

There is even a spectrum analyser type app written by the radio hams.

Search term is SDR , software defined radio.

I have one. RTL2832. The only problem, USB interface makes it arduino NON friendly. I find it strange, why nobody produces RTL2832 board with open I2C access? Same like Si4432 or FM receiver Si4703?

Magician:
I have one. RTL2832. The only problem, USB interface makes it arduino NON friendly. I find it strange, why nobody produces RTL2832 board with open I2C access? Same like Si4432 or FM receiver Si4703?

Speed of I2C is max 3.2 Mbs.

Those devices output at something like 8 to 10 Mbs.

A lot of decoding power is required for SDR.

There is an app which works on androids however but i have not tried it.
The one app for ipad appears to be useless however.

I am not familiar with the other modules you mentioned but i suspect they do the decoding by other means.

If this is for DF I recall someone mentioning a hack for some of the TV dongles to read the AGC voltage to determine signal strength but how you determine frequency eludes me.

In my day this stuff needed transistors mounted on posts, rats nest style, in milled aluminium cavities.
Definitely not hobby stuff, a TX/Rx pair cost 80K 30 yrs ago.

Quote from: Magician on Today at 17:28:33

I have one. RTL2832. The only problem, USB interface makes it arduino NON friendly. I find it strange, why nobody produces RTL2832 board with open I2C access? Same like Si4432 or FM receiver Si4703?

Speed of I2C is max 3.2 Mbs.

TV tuners use separate control bus (I2C) and data - raw IF video outputs. So control lines may be very slow, you just set channel ones in a while, but video stream could be 40-60 MHz for HDTV. Certainly, arduino could manage only slow control bus.

Those devices output at something like 8 to 10 Mbs.

Yes, because inside TV dongle there is second chip (except RTL2832) that digitizes a video to port it over USB. For my project I don't need to process high data rate, only compare phases two IF lines. Arduino UNO makes it nicely in this video:
https://drive.google.com/file/d/0Bw4tXXvyWtFVWlNVQm5QNnVfNGc/view?usp=sharing

That looks quite interesting , any links to the tech side of how they did that ?

PS i have no audio on this machine

http://coolarduino.blogspot.ca/2015/09/radio-direction-finder-arduino-based.html

There is no audio track.

Here's a nice site for finding IC logos but I didn't find the one pictured.
https://www.elnec.com/support/ic-logos/

But I'm guessing that IC in the picture is a voltage regulator 'C045Z' with a date-stamp
http://www.aliexpress.com/store/product/C045Z/701083_32297628094.html

tgit23:
Here's a nice site for finding IC logos but I didn't find the one pictured.
https://www.elnec.com/support/ic-logos/

But I'm guessing that IC in the picture is a voltage regulator 'C045Z' with a date-stamp
http://www.aliexpress.com/store/product/C045Z/701083_32297628094.html

Thanks for trying. Yea, IC looks identical, but description is wrong, its' definitely not a voltage regulator. I'd estimate 99% of products on aliexpress have same issue.
I get my module from here:
http://www.aliexpress.com/store/product/Original-Sharp-S7VZ7306A-Tuner-Standing-Type-for-openbox-skybox-S9-F3S-F4S-S11-F3-F4-X3/313543_1857168803.html

As you can see, whole unit with an IC, board and enclosure (assembled/tested -?) costs 1/2 of price for chip from your link.
I ask them for docs, but was told there is nothing.