Date   

Re: Weather protection of a feedhorn/waveguide

Alan G0XBV
 

-----Original Message-----
From: Neil neil@... [ukmicrowaves]
To: ukmicrowaves
Sent: Sat, 27 Aug 2016 16:31
Subject: Re: [ukmicrowaves] Weather protection of a feedhorn/waveguide

 
Wonder if you can be arrested for measuring the size of PE lids in the
supermarket with digital calipers?
You might get banned from Waitrose, Neil.  Could you live with that?
:>)
 
Not sure about Christmas pud pots, but yoggit pots are PP most often.
 
Al G0XBV        
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (9)

     20160827_154701_HDR.jpg

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.


.


Re: Suspicious ADF4351 Devices - a verdict

GORDONJ REASON <gordonj.reason@...>
 

I suppose the moral is , if yer buys cheap , or cheep , yer gits cheap ....................... 


On 31 August 2016 at 12:12 "Neil neil@... [ukmicrowaves]" <ukmicrowaves@...> wrote:

 

All three of my recent cheapies give the same fault. The other two are
fine. I only got these as an interim fix until my LMX2582 + pic + ftdi
usb project comes to fruition. The vendor is not in the mood for a
refund and I'm not going to get into an ebay flamewar so I will leave an
oblique comment about how well it works for /1 to /16 so informed buyers
can draw their own conclusions.

If I needed the bigger divide ratios I think I'd follow Andy's
suggestion and buy pukka chips and swap them.

Neil G4DBN

On Wed, 31 Aug 2016 08:22:32 +0100, Andy Talbot andy.g4jnt@...
[ukmicrowaves] wrote:
> The verdict is in:
>
> The two chips on my original two (lower cost) PCBs are FAULTY; they
> are not as they should be, they are Un-ADF4351 devices, they
> have been lied-about by their maker; they are false ADF4351s  [*]
>
> My other PCB arrived yesterday; the better looking one, Ebay number
> 172296557171 (with a 25MHz reference oscillator).
> Using identical register settings to those that didnt work on the
> first boards, I can happily generate 37MHz , 50.051MHz, and
> 70.345MHz; indeed, anything requiring divider settings of /32  / 64
>
> Yet the chip looks identical, it has the same # symbol and data code
> and idents as the earlier faulty ones.
>
> To Recap: this one works fine, with all the divider settings working:
> http://www.g4jnt.com/DropF/ok_adf4351_pcb.JPG [1]
>
> This one appears to have only the functionality of an ADF4350, with
> divider settigns only allowed up to /16, and therefore a minimum
> frequency of 135MHz or thereabouts.
> http://www.g4jnt.com/DropF/ungood_adf4351_pcb.JPG [2]
>
> Zoom in to the two photos and see the chips have identical markings.
>
> Feeling tempted to order a couple of real AD devices from Farnell and
> replace them now...
>
> Andy  G4JNT
>
> [*]
>
>  Es not pinin! Es passed on! This parrot is no more! He has ceased to
> be! Es expired and gone to meet is maker! Es a stiff! Bereft of life,
> e rests in peace! If you hadnt nailed im to the perch ed be pushing
> up
> the daisies! Is metabolic processes are now istory! Es off the twig!
> Es kicked the bucket, es shuffled off is mortal coil, run down the
> curtain and joined the bleedin choir invisible!! THIS IS AN
> EX-PARROT!!
>
>
>
> Links:
> ------
> [1] http://www.g4jnt.com/DropF/ok_adf4351_pcb.JPG
> [2] http://www.g4jnt.com/DropF/ungood_adf4351_pcb.JPG
> [3]
>
> https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/messages/40237;_ylc=X3oDMTJxajhiNnRkBF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BG1zZ0lkAzQwMjM3BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQ3MjYzMTUxNA--?act=reply&messageNum=40237
> [4]
>
> mailto:andy.g4jnt@...?subject=Re%3A%20Suspicious%20ADF4351%20Devices%20-%20a%20verdict
> [5]
>
> mailto:ukmicrowaves@...?subject=Re%3A%20Suspicious%20ADF4351%20Devices%20-%20a%20verdict
> [6]
>
> https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/newtopic;_ylc=X3oDMTJlbzFnbGt0BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQ3MjYzMTUxNA--
> [7]
>
> https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/topics/40237;_ylc=X3oDMTM2c21wMWJlBF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BG1zZ0lkAzQwMjM3BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQ3MjYzMTUxNAR0cGNJZAM0MDIzNw--
> [8] https://yho.com/1wwmgg
> [9]
>
> https://groups.yahoo.com/neo/groups/ukmicrowaves/info;_ylc=X3oDMTJlb2JqZDF1BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQ3MjYzMTUxNA--
> [10]
>
> https://groups.yahoo.com/neo/groups/ukmicrowaves/members/all;_ylc=X3oDMTJmajg0ams2BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0NzI2MzE1MTQ-
> [11]
>
> https://groups.yahoo.com/neo;_ylc=X3oDMTJkam41cHZlBF9TAzk3NDc2NTkwBGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDcyNjMxNTE0
> [12] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
> [13]
> mailto:ukmicrowaves-unsubscribe@...?subject=Unsubscribe
> [14] https://info.yahoo.com/legal/us/yahoo/utos/terms/


 


 


Re: Suspicious ADF4351 Devices - a verdict

Neil Smith G4DBN
 

All three of my recent cheapies give the same fault. The other two are fine. I only got these as an interim fix until my LMX2582 + pic + ftdi usb project comes to fruition. The vendor is not in the mood for a refund and I'm not going to get into an ebay flamewar so I will leave an oblique comment about how well it works for /1 to /16 so informed buyers can draw their own conclusions.

If I needed the bigger divide ratios I think I'd follow Andy's suggestion and buy pukka chips and swap them.

Neil G4DBN

On Wed, 31 Aug 2016 08:22:32 +0100, Andy Talbot andy.g4jnt@gmail.com [ukmicrowaves] wrote:
The verdict is in:

The two chips on my original two (lower cost) PCBs are FAULTY; they
are not as they should be, they are Un-ADF4351 devices, they
have been lied-about by their maker; they are false ADF4351s  [*]

My other PCB arrived yesterday; the better looking one, Ebay number
172296557171 (with a 25MHz reference oscillator).
Using identical register settings to those that didnt work on the
first boards, I can happily generate 37MHz , 50.051MHz, and
70.345MHz; indeed, anything requiring divider settings of /32  / 64

Yet the chip looks identical, it has the same # symbol and data code
and idents as the earlier faulty ones.

To Recap: this one works fine, with all the divider settings working:
http://www.g4jnt.com/DropF/ok_adf4351_pcb.JPG [1]

This one appears to have only the functionality of an ADF4350, with
divider settigns only allowed up to /16, and therefore a minimum
frequency of 135MHz or thereabouts.
http://www.g4jnt.com/DropF/ungood_adf4351_pcb.JPG [2]

Zoom in to the two photos and see the chips have identical markings.

Feeling tempted to order a couple of real AD devices from Farnell and
replace them now...

Andy  G4JNT

[*]

 Es not pinin! Es passed on! This parrot is no more! He has ceased to
be! Es expired and gone to meet is maker! Es a stiff! Bereft of life,
e rests in peace! If you hadnt nailed im to the perch ed be pushing up
the daisies! Is metabolic processes are now istory! Es off the twig!
Es kicked the bucket, es shuffled off is mortal coil, run down the
curtain and joined the bleedin choir invisible!! THIS IS AN
EX-PARROT!!


Links:
------
[1] http://www.g4jnt.com/DropF/ok_adf4351_pcb.JPG
[2] http://www.g4jnt.com/DropF/ungood_adf4351_pcb.JPG
[3]
https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/messages/40237;_ylc=X3oDMTJxajhiNnRkBF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BG1zZ0lkAzQwMjM3BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQ3MjYzMTUxNA--?act=reply&messageNum=40237
[4]
mailto:andy.g4jnt@gmail.com?subject=Re%3A%20Suspicious%20ADF4351%20Devices%20-%20a%20verdict
[5]
mailto:ukmicrowaves@yahoogroups.com?subject=Re%3A%20Suspicious%20ADF4351%20Devices%20-%20a%20verdict
[6]
https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/newtopic;_ylc=X3oDMTJlbzFnbGt0BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQ3MjYzMTUxNA--
[7]
https://groups.yahoo.com/neo/groups/ukmicrowaves/conversations/topics/40237;_ylc=X3oDMTM2c21wMWJlBF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BG1zZ0lkAzQwMjM3BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQ3MjYzMTUxNAR0cGNJZAM0MDIzNw--
[8] https://yho.com/1wwmgg
[9]
https://groups.yahoo.com/neo/groups/ukmicrowaves/info;_ylc=X3oDMTJlb2JqZDF1BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQ3MjYzMTUxNA--
[10]
https://groups.yahoo.com/neo/groups/ukmicrowaves/members/all;_ylc=X3oDMTJmajg0ams2BF9TAzk3MzU5NzE0BGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwN2dGwEc2xrA3ZtYnJzBHN0aW1lAzE0NzI2MzE1MTQ-
[11]
https://groups.yahoo.com/neo;_ylc=X3oDMTJkam41cHZlBF9TAzk3NDc2NTkwBGdycElkAzgwOTAxMjEEZ3Jwc3BJZAMxNzA1MDYzMTA4BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDcyNjMxNTE0
[12] https://info.yahoo.com/privacy/us/yahoo/groups/details.html
[13] mailto:ukmicrowaves-unsubscribe@yahoogroups.com?subject=Unsubscribe
[14] https://info.yahoo.com/legal/us/yahoo/utos/terms/


Re: Suspicious ADF4351 Devices

Christopher Bartram <cbartram@...>
 

I've kept quiet in this discussion so far, but having had to look at a similar problem in the past, it seems probable that the chips Andy had problems with were re-used. It's not at all unknown for some 'entrepreneurs' to strip surplus and faulty boards of high value components, to clean them up, and to re-sell them as 'new' at well below manufacturer's/distributor's prices. Damage can easily occur in that process. That they are finding their way onto PCBs sold primarily into the amateur market isn't at all surprising, given the tendency for amateurs, particularly microwavers, it seems(!), to go for the cheapest solution without thinking of why the boards cost so little!

There is a real problem professionally with reused components entering the supply chain via 'grey markets'. It's been reported that they have found their way mysteriously around QA barriers, and been detected in military/aerospace systems. I've also been told that even the big component distributors haven't been immune in the past ...

Vy 73

Chris
GW4DGU

--


Suspicious ADF4351 Devices - a verdict

Andy G4JNT
 

The verdict is in:

The two chips on my original two (lower cost) PCBs are FAULTY; they are not as they should be, they are Un-ADF4351 devices, they have been lied-about by their maker; they are false ADF4351s  [*]

My other PCB arrived yesterday; the better looking one, Ebay number 172296557171 (with a 25MHz reference oscillator).
Using identical register settings to those that didn't work on the first boards, I can happily generate 37MHz , 50.051MHz, and 70.345MHz; indeed, anything requiring divider settings of /32  / 64

Yet the chip looks identical, it has the same # symbol and data code and idents as the earlier 'faulty' ones.

To Recap: this one works fine, with all the divider settings working:

This one appears to have only the functionality of an ADF4350, with divider settigns only allowed up to /16, and therefore a minimum frequency of 135MHz or thereabouts.

Zoom in to the two photos and see the chips have identical markings.

Feeling tempted to order a couple of real AD devices from Farnell and replace them now...

Andy  G4JNT



[*]
 'E's not pinin'! 'E's passed on! This parrot is no more! He has ceased to be! 'E's expired and gone to meet 'is maker! 'E's a stiff! Bereft of life, 'e rests in peace! If you hadn't nailed 'im to the perch 'e'd be pushing up the daisies! 'Is metabolic processes are now 'istory! 'E's off the twig! 'E's kicked the bucket, 'e's shuffled off 'is mortal coil, run down the curtain and joined the bleedin' choir invisible!! THIS IS AN EX-PARROT!!


September 2016 SBMS Newsletter

rein0zn@...
 

Hello all,

The September 2016 SBMS Newsletter is available here:

http://www.ham-radio.com/sbms/newsletters/2016nwsltrs/09sbms2016.pdf

Thanks much Walter.

73 Rein W6SZ


Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes

Derek Kozel <derek.kozel@...>
 

Hello Andy,

Attached are photos of ADF 4355 and 5355 synthesizers which I can guarantee are legitimate. They do not have the Analog Devices logo.

There are nice control programs available for the evaluation module if you have Windows available. The eval program prints out all the register values and does not require an eval board to run. There are also various raw source drivers available for reference if that is useful.
http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/eval-adf4351.html#eb-overview

While it is probably not directly useful, here is the source code of the driver we've written at work for the ADF 4350/4351 synths. They're so similar that we use the same driver and just pass in different register maps.
https://github.com/EttusResearch/uhd/blob/master/host/lib/usrp/common/adf435x.hpp
https://github.com/EttusResearch/uhd/blob/master/host/lib/ic_reg_maps/gen_adf4350_regs.py
https://github.com/EttusResearch/uhd/blob/master/host/lib/ic_reg_maps/gen_adf4351_regs.py

I used the ADF 5355 in my 10 GHz rig briefly. Now I'm designing a new setup around the LMX2592 synth. I hope everyone who has these synths are able to get them working satisfactorily.

Cheers,
Derek
AG6PO

On Tue, Aug 30, 2016 at 2:25 PM, Andy Talbot andy.g4jnt@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

There is a near-infinite set of values for generating any one arbitrary frequency from a Fract-N synthesizer
Yours appear to be based on a 10kHz grid spacing.

I arbitrarily used  a 1MHz Grid
It may not have been the best choice, it probably isn't the worst

Andy

On 30 August 2016 at 15:55, Barry Chambers b.chambers@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
[Attachment(s) from Barry Chambers included below]

Andy

This is what the ADF435x software from the AD web-site gives for 3408MHz

73

Barry, G8AGN
On 30/08/2016 08:09, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:
 
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 ADF4350

Anyway,   for the record:

These values give 3408MHz (*3 + 144 = 10368MHz) with a 10MHz reference

Fcomp  10.00MHz   R     =  1   N     =  340   Denom =  0010   Fract =  0008    Error =  0.0Hz
Reg 0   0x 00AA0040
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005


And, Rein, here are yours for 3975MHz   (currently showing on my SA)
Fcomp  10.00MHz  R     =  1   N     =  397   Denom =  0010   Fract =  0005    Error =  0.0Hz
Reg 0   0x 00C68028
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005



On 30 August 2016 at 01:40, rein0zn@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

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.






Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes [1 Attachment]

Andy G4JNT
 

There is a near-infinite set of values for generating any one arbitrary frequency from a Fract-N synthesizer
Yours appear to be based on a 10kHz grid spacing.

I arbitrarily used  a 1MHz Grid
It may not have been the best choice, it probably isn't the worst

Andy

On 30 August 2016 at 15:55, Barry Chambers b.chambers@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 
[Attachment(s) from Barry Chambers included below]

Andy

This is what the ADF435x software from the AD web-site gives for 3408MHz

73

Barry, G8AGN
On 30/08/2016 08:09, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:
 
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 ADF4350

Anyway,   for the record:

These values give 3408MHz (*3 + 144 = 10368MHz) with a 10MHz reference

Fcomp  10.00MHz   R     =  1   N     =  340   Denom =  0010   Fract =  0008    Error =  0.0Hz
Reg 0   0x 00AA0040
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005


And, Rein, here are yours for 3975MHz   (currently showing on my SA)
Fcomp  10.00MHz  R     =  1   N     =  397   Denom =  0010   Fract =  0005    Error =  0.0Hz
Reg 0   0x 00C68028
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005



On 30 August 2016 at 01:40, rein0zn@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

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.





Re: Réf. : Re: Suspic ious ADF4351 De vices - may be fakes

Mike Willis
 

The arduino IDE may result in a program that runs more slowly than hand crafted code.

I also think if anyone has the ability to clone that chip they could make their own brand and certainly wouldn't forget the logo on a fake. Doubt the market is large enough for it to be worthwhile cloning these specialist chips. Other options are that these chips are genuine but were rejects. Some enterprising company got hold of them.

Mike


Re: Plessey microwave diode detectors

GORDONJ REASON <gordonj.reason@...>
 

in my box of bits , I have a Plessey SP5000 , synth IC ... if there's any plessey fanatics out there .....................

On 30 August 2016 at 03:54 "'Paul Bicknell' paul@... [ukmicrowaves]" <ukmicrowaves@...> wrote:

 

 

Hi Chris thank you for the reply

I will test them out as detectors first but one defiantly has the words  Duff on it

 

I was thinking of contacting you about other things do you have a  HP 70000 system ?

 

Regards Paul B

 


From: ukmicrowaves@... [mailto:ukmicrowaves@...]
Sent: 29 August 2016 23:25
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] Plessey microwave diode detectors

 

 

Hello Paul

>I was wondering if anyone had come across microwave diode detectors
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 SMA connector and Tuning
measures approximately 35 mm tall & 25 mm wide Regards Paul B

I suspect that these aren't detectors at all: the tuning control and the
ATO type designation suggest that they are possibly Gunn or Impatt
oscillators. If they are oscillators they are very much worth
investigation further!

Vy 73

Chris
GW4DGU

--
Christopher Bartram MIET
Christopher Bartram RF Design
Llygad yr Haul
Carno
CAERSWS
Powys SY17 5LE

phone: +44 1686 237732
mobile: +44 7545 094490
email: cbartram@...
URL: www.christopherbartramrfdesign.com

Note: This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Christopher Bartram RF Design reserves the right to monitor all e-mail communications through its network. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorised to state them to be the views of any such entity.

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7752 / Virus Database: 4649/12905 - Release Date: 08/29/16

 


 


 


Re: Réf. : Re: Suspicious ADF4351 De vices - may be fakes

Dave G1EHF
 

Andy,


I've loaded my SV1AFN board from an Arduino with the following values provided by the AD controller software:


0xA00080

0x80080C9

0x4E42

0x4B3

0xE5003C

0x580005


This invokes a 10MHz reference, 10MHz PFD and /64 output. The PLL generated 50.1MHz as expected. So this ADF4351, cloned or otherwise works fine.


I must admit I find it strange that fakers would go to the trouble of providing various date codes on their chips but forget to put on a logo! I've seen plenty of fake RF power devices with Motorola logos.


Dave G1EHF


Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes

Barry Chambers
 

Andy

This is what the ADF435x software from the AD web-site gives for 3408MHz

73

Barry, G8AGN
On 30/08/2016 08:09, Andy Talbot andy.g4jnt@... [ukmicrowaves] wrote:

 
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 ADF4350

Anyway,   for the record:

These values give 3408MHz (*3 + 144 = 10368MHz) with a 10MHz reference

Fcomp  10.00MHz   R     =  1   N     =  340   Denom =  0010   Fract =  0008    Error =  0.0Hz
Reg 0   0x 00AA0040
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005


And, Rein, here are yours for 3975MHz   (currently showing on my SA)
Fcomp  10.00MHz  R     =  1   N     =  397   Denom =  0010   Fract =  0005    Error =  0.0Hz
Reg 0   0x 00C68028
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005



On 30 August 2016 at 01:40, rein0zn@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

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.




Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes

rein0zn@...
 

Hello Andy,

Thanks much for your register values to generatie 3975 MHz.

8400 - 8450 MHz 
`LO. 2 *. 3975 MHz
iF for RTL-SDR 450 - 500 MHz

73 Rein W6SZ



-----Original Message-----
From: "Andy Talbot andy.g4jnt@... [ukmicrowaves]"
Sent: Aug 30, 2016 12:09 AM
To: ukmicrowaves@...
Subject: Re: Réf. : Re: [ukmicrowaves] Suspicious ADF4351 Devices - may be fakes



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 ADF4350

Anyway,   for the record:

These values give 3408MHz (*3 + 144 = 10368MHz) with a 10MHz reference

Fcomp  10.00MHz   R     =  1   N     =  340   Denom =  0010   Fract =  0008    Error =  0.0Hz
Reg 0   0x 00AA0040
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005


And, Rein, here are yours for 3975MHz   (currently showing on my SA)
Fcomp  10.00MHz  R     =  1   N     =  397   Denom =  0010   Fract =  0005    Error =  0.0Hz
Reg 0   0x 00C68028
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005



On 30 August 2016 at 01:40, rein0zn@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 


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.





Re: Suspicious ADF4351 Devices - may be fakes

Andy G4JNT
 

OK, final check. 
Generate and let me have your proven set of registers that generate, say 50.1MH.  I'll send those exact values to my device using just Putty and the PIC interface and see.

But pretty certain those two highest divider values definitely do not function

'jnt


On 30 August 2016 at 08:04, willis.mj@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

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 special. However, it is doing it in C++ which might be a little slower and it does all registers at the same time.


Mike



ADF4351 Devices - may be this can help

F1CHF
 

I found a very nice paper called ADF4351 Cheat Sheet
may be this can help ..
see here (in the middle of the page)
 
Francois F1CHF
 
 
 
 
 
-------Message original-------
 
Date : 30/08/2016 09:22:49
Sujet : Re: [ukmicrowaves] Re: Suspicious ADF4351 Devices - may be fakes
 
 

OK, final check. 
Generate and let me have your proven set of registers that generate, say 50.1MH.  I'll send those exact values to my device using just Putty and the PIC interface and see.

But pretty certain those two highest divider values definitely do not function

'jnt


On 30 August 2016 at 08:04, willis.mj@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 

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 special. However, it is doing it in C++ which might be a little slower and it does all registers at the same time.


Mike


 


Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes

Andy G4JNT
 

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 ADF4350

Anyway,   for the record:

These values give 3408MHz (*3 + 144 = 10368MHz) with a 10MHz reference

Fcomp  10.00MHz   R     =  1   N     =  340   Denom =  0010   Fract =  0008    Error =  0.0Hz
Reg 0   0x 00AA0040
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005


And, Rein, here are yours for 3975MHz   (currently showing on my SA)
Fcomp  10.00MHz  R     =  1   N     =  397   Denom =  0010   Fract =  0005    Error =  0.0Hz
Reg 0   0x 00C68028
Reg 1   0x 08008051
Reg 2   0x 00005E42
Reg 3   0x 00000003
Reg 4   0x 0085003C
Reg 5   0x 00580005



On 30 August 2016 at 01:40, rein0zn@... [ukmicrowaves] <ukmicrowaves@...> wrote:
 


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.



Re: Suspicious ADF4351 Devices - may be fakes

Mike Willis
 

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 special. However, it is doing it in C++ which might be a little slower and it does all registers at the same time.

Mike


Re: Plessey microwave diode detectors

Paul G8KFW
 

Hi Chris thank you for the reply

I will test them out as detectors first but one defiantly has the words  Duff on it

 

I was thinking of contacting you about other things do you have a  HP 70000 system ?

 

Regards Paul B

 


From: ukmicrowaves@... [mailto:ukmicrowaves@...]
Sent: 29 August 2016 23:25
To: ukmicrowaves@...
Subject: Re: [ukmicrowaves] Plessey microwave diode detectors

 

 

Hello Paul

>I was wondering if anyone had come across microwave diode detectors
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 SMA connector and Tuning
measures approximately 35 mm tall & 25 mm wide Regards Paul B

I suspect that these aren't detectors at all: the tuning control and the
ATO type designation suggest that they are possibly Gunn or Impatt
oscillators. If they are oscillators they are very much worth
investigation further!

Vy 73

Chris
GW4DGU

--
Christopher Bartram MIET
Christopher Bartram RF Design
Llygad yr Haul
Carno
CAERSWS
Powys SY17 5LE

phone: +44 1686 237732
mobile: +44 7545 094490
email: cbartram@...
URL: www.christopherbartramrfdesign.com

Note: This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Christopher Bartram RF Design reserves the right to monitor all e-mail communications through its network. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorised to state them to be the views of any such entity.

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7752 / Virus Database: 4649/12905 - Release Date: 08/29/16


Re: Réf. : Re: Suspicious ADF4351 Devices - may be fakes

rein0zn@...
 


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.


-----Original Message-----
From: "Neil neil@... [ukmicrowaves]"
Sent: Aug 29, 2016 2:22 PM
To: ukmicrowaves@...
Subject: Re: Réf. : Re: [ukmicrowaves] Suspicious ADF4351 Devices - may be fakes



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 00000000 01111111 10000000 00011000 Int=255, frac, =3

Register 1 = 0x08000029 00001000 00000000 00000000 00101001 Phase off, Prescaler 8/9, Phase 0, Mod 5

Register 2 = 0x18004E42 00011000 00000000 01001110 01000010 Low noise, Digital lock detect, no ref doubler, no ref/2, R=1, 2.50mA pump, Frac-N

Register 3 = 0x000004B3 00000000 00000000 00000000 00000011 No clock div

Register 4 = 0x008C83FC 00000000 10001100 10000011 11111100 feedback fund, DIV /1, clockdiv 200, VCO up, MTLD off, Aux on max, out on max

Register 5 = 0x00580005 00000000 01011000 00000000 00000101 Digital LD

I am injecting into the x4 of a DB6NT transverter, otherwise I would have used /3 I think.

Neil G4DBN


On 29/08/2016 20:44, rein0zn@... [ukmicrowaves] wrote:
 

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
-----Original Message-----
From: "Neil neil@... [ukmicrowaves]"
Sent: Aug 29, 2016 11:28 AM
To: ukmicrowaves@...
Subject: Re: Réf. : Re: [ukmicrowaves] Suspicious ADF4351 Devices - may be fakes



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 from the on-board 10MHz osc.  First one I tried gave a spectacular comb of spurs spaced 211Hz at up to -45dBc inside the loop bandwidth.

Using a breadboarded layout with a 0dBm GPSDO ref gives a fair performance, slightly better than my HP E4421B at 2.5GHz out to +- 10kHz, but far worse further out, -70dBc at +-32kHz compared with -85dBc for the HP.  The 4351 board manages -85dBc at +-80kHz.  Output when set to +5dBm at 2.5GHz is actually +6.7dBm.

Spec is for minimum reference slew rate is >30V/microsecond, and I think my "0dBm" is actually more like about 0.35V rms into 50R, so if my sums are right, that is only barely enough [assuming peak voltage A is 1.4*rms, slew rate is dV/dt, V is A*sin(wt), slew rate is Aw*cos(wt) so max is 0.35*1.4*2*pi*10e7 which is roughly 30 and a bit volts per microsecond.]

The board in the box with proper supply decoupling (and a higher slew-rate reference from the Rb standard) might have better noise performance.  Not checked it as it is in service as my 10GHz LO.

Neil G4DBN

Virus-free. www.avast.com




Virus-free. www.avast.com



Re: Suspicious ADF4351 Devices - may be fakes

Neil Smith G4DBN
 

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 have a look? our items are well. If still doesn't work, let me know as soon as possible.
Thank you for your understanding
have a great (nice) day
best regards
Ms .Huang

please open the link download data .thank you
http://115.28.16.44:81/file/4401.RAR

Yeah, sure I'll open a bare IP link to a RAR archive on an odd port.  Just let me fire up my burnable malware analysis VM...

Oh, OK, it is actually sensible content, source code and compiler output for a C51 MCU used to control a 4350 board.

It looks like the ebay ad for mine was a cut and paste job.  Part referred to a 4350, most to 4351, all a bit odd.

Title was "35M-4.4G signal source ADF4351 development board frequency range: 35MHz--4.4GHz"
then subtitle "35M-4.4G signal source development board ADF4350 development board"

The picture was not of the items I received, mine looked newer.  One of them has separate power and control pin headers, the other has a single header.  Both have the title ADF4351_PLL

Could be that there is some critical limitation about the config which prevents setting the /32 and /64 divisors, but it isn't at all obvious. Not an issue at all for my application, a 4350 works just fine for this.  I'll defer to Andy and other experts to dig further.

Neil G4DBN

Virus-free. www.avast.com