Now I'm setting the BandSelect bits correctly, all it working as it should EXCEPT, /32 and /64 are still not availalble. So it really is a fault / pirated chip. And could be a mis-labelled

Same one I have. Fake or not it works. Maybe the difference is that I am using the Arduino sketch? Its 99% GUI like most software but the register writing is fairly simple and its not doing anything

Hi Chris thank you for the reply I will test them out as detectors firstbut one defiantly has the words Duff on it I was thinking of contacting you aboutother things do you have a HP 70000

Hello Neil, Thanks much for info. Phase noise OK at 10244 MHz. Hope to be able to use one as LO at 3975 MHz for 8.4 GHz receiver, if phase noise is not too bad. 73 Rein W6SZ.

Response from the ebay seller to my gentle enquiry about the lack of /32 and /64 division: Dear,Good buyer Please check it again by other device or Can you let some technician to

Every real AD device I've used always has the triangle-in-a-square logo on the package. If that symbol is not present, it's a reasonable assumption it is not a proper Analog Devices chip. Isn't

Hello Paul made by Plessey Optoelectronics and Microwave >with a freq range 75-110 ghz and 90-140 ghz Such as Model numbers ATO 273 , 274 & 282 They are gold plated and the >main body excluding the

I have a 'black' Chinese ADF4351 board and a 'red' SV1AFN board. Both chip packages look identical, with no AD logo, right-justified text and a # before the date code (which differs between boards!).

You're going to have to elaborate....

Look at the ebay advert very carefully! Paul G8AQA

WELL WELL WELL Just downloaded the older ADF4350 data sheet, and guess what. That device is near identical the the ADF4351 but only offers an output divider down to /16 - sounds familiar. Methinks

Hi Rein, 2556MHz for x4 to 10224MHz, 144 IF at 10368. My settings are: INT 255 FRAC 3 MOD 5 DIV 1 Hex aand Bin values are: Register 0 = 0x007F8018

Quite possibly, but I WAS programming the divider bits correctly; thay are straightforward. There is a possibility I may have spotted though. Been away from it all day, and will look at it again

Hi Neil, Are yu using the ADF4351 as a LO in your 10 GHz radio? What frequency is that LO at , if so. 73 Rein W6SZ

Hi Andy, I know its unlikely but is there a remote possibility you are not programming it correctly? Mike

Something to bear in mind if you are using one of these cheapo 4351 boards, if you swap the ref input to the SMA for an external ref byt blob-soldering the pads, you must also remove the power

Under the microscope, the casing looks unpainted, the pin-1 dot is very clear and distinct, and I've tried several solvents with no impact so far. The board is VERY clean now though.

YES it is a mix between ADF4350 and 4351 .. see 4350 datasheet http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4350.pdf if you can produce a 35 Mhz signal, it is good

Sometimes the fakers 'black top' (paint) the chips before re-marking. Some are so bad that the paint over-spray can be seen on pins. The paint often chips away at the edges too. Wiping

Francois Refer to the datasheet from the makers of the chip at http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4351.pdf,first paragraph “FEATURES Output frequency range: 35