From: Alexander Wright
To: Discussion of precise time and frequency measurement
Sent: Saturday, 20 April 2013, 12:11
Subject: Re: [time-nuts] Changing FE-5650A frequency?
On 20/04/13 10:03, Robert Atkinson wrote:
> Hi Alec,
> Well done and thanks for the credit. I had not looked under the bo
On 20/04/13 10:03, Robert Atkinson wrote:
Hi Alec,
Well done and thanks for the credit. I had not looked under the board for the
crystal or spotted the divider.
One comment. in your blog and ebay description you say that the unit runs on 15V. The "M"
suffix 5650A is actually designed for a norm
e time and frequency measurement
Sent: Saturday, 20 April 2013, 2:33
Subject: Re: [time-nuts] Changing FE-5650A frequency?
Success! I've managed to set mine to 10MHz. I've documented this on my blog:
http://blog.m0tei.co.uk/post/2013/04/20/Mystery-Aircraft-Parts-and-Atomic-Clock
e time and frequency measurement
Sent: Saturday, 20 April 2013, 2:33
Subject: Re: [time-nuts] Changing FE-5650A frequency?
Success! I've managed to set mine to 10MHz. I've documented this on my blog:
http://blog.m0tei.co.uk/post/2013/04/20/Mystery-Aircraft-Parts-and-Atomic-Clock
Alexander Wright wrote:
> On 07/04/13 21:55, WB6BNQ wrote:
> > Hi Alec,
> >
> > I am going to agree with Robert (G8RPI) on his assessment, particularly as
> > the dip switches are clearly visible in one of the pictures. Although I
> > wonder why Robert feels unfortunate about the [ two chip D
Success! I've managed to set mine to 10MHz. I've documented this on my
blog:
http://blog.m0tei.co.uk/post/2013/04/20/Mystery-Aircraft-Parts-and-Atomic-Clocks
Thanks to those who offered suggestions.
Regards
Alec
___
time-nuts mailing list -- time-nut
On 07/04/13 21:55, WB6BNQ wrote:
Hi Alec,
I am going to agree with Robert (G8RPI) on his assessment, particularly as the
dip switches are clearly visible in one of the pictures. Although I wonder why
Robert feels unfortunate about the [ two chip DDS arrangement ] ?
It matters not the number
Hi Alec,
I am going to agree with Robert (G8RPI) on his assessment, particularly as the
dip switches are clearly visible in one of the pictures. Although I wonder why
Robert feels unfortunate about the [ two chip DDS arrangement ] ?
It matters not the number of chips that make up the DDS. Why
wow, a little more picking will get you to the dds pinout wrt the 24-bit
programming word...
Alexander Wright
> On 07/04/13 15:10, Herbert Poetzl wrote:
>> The purpose of the polymer foam is isolation to keep a
>> stable temperature throughout the boards.
>>
>> http://www.qsl.net/z/zl1bpu/PROJ/FE5
On 07/04/13 15:10, Herbert Poetzl wrote:
The purpose of the polymer foam is isolation to keep a
stable temperature throughout the boards.
http://www.qsl.net/z/zl1bpu/PROJ/FE5650-2.jpg
The top layer in this image is the DDS board, and it is
basically identical to the FE5680A, which means it can
On 07/04/13 17:56, Robert Atkinson wrote:
Hi Alex,
These units were used as timing references for secure communication systems (Havequick).
see ebay item 130832014630. Unfortunatly they are an older design with a two chip DDS.
The other problem is that the "M" designation is for military and me
G8RPI.
From: Herbert Poetzl
To: Discussion of precise time and frequency measurement
Sent: Sunday, 7 April 2013, 15:10
Subject: Re: [time-nuts] Changing FE-5650A frequency?
On Sun, Apr 07, 2013 at 11:27:23AM +0100, Alexander Wright wrote:
> On 07/04/13 05:01, WB6BNQ wrote:
>> Hi
?
Robert G8RPI.
From: Alexander Wright
To: time-nuts@febo.com
Sent: Sunday, 7 April 2013, 0:41
Subject: [time-nuts] Changing FE-5650A frequency?
Hi all,
I've recently ripped some FE-5650A's out of some old equipment, but they seem
to be a custom build, h
On Sun, Apr 07, 2013 at 11:27:23AM +0100, Alexander Wright wrote:
> On 07/04/13 05:01, WB6BNQ wrote:
>> Hi Alec,
>> You may be in luck. However, I would need some additional pictures,
>> particularly
>> of the connector on the bottom, also some of the inside.
> Bill,
> Thanks for your reply!
On 07/04/13 05:01, WB6BNQ wrote:
Hi Alec,
You may be in luck. However, I would need some additional pictures,
particularly
of the connector on the bottom, also some of the inside.
Bill,
Thanks for your reply! Here are some photos of the inside:
http://m0tei.co.uk/fe5650pics/
You'll see tha
Hey Bill: Thanks for the archive
Don
> I put together a zip file of various information on FEI-5650-option 58
> that will
> help you get familiar with the family line. If you have problems with
> the link
> let me know. Also, after you get a successful download let me know so I
> can
> redu
Hi Alec,
You may be in luck. However, I would need some additional pictures,
particularly
of the connector on the bottom, also some of the inside.
The primary physics package is a stand alone analog Rubidium frequency standard
that outputs 50.255* MHz frequency. That signal is used to drive va
On Sun, Apr 07, 2013 at 12:41:10AM +0100, Alexander Wright wrote:
> Hi all,
> I've recently ripped some FE-5650A's out of some old equipment,
> but they seem to be a custom build, here you can see they have
> the option just listed as "-":
> http://cambridge.m0tei.co.uk/files/IMG_20130330_232647.jp
Hi all,
I've recently ripped some FE-5650A's out of some old equipment, but they
seem to be a custom build, here you can see they have the option just
listed as "-":
http://cambridge.m0tei.co.uk/files/IMG_20130330_232647.jpg
They seem to be single rail (15v) supply with an 800kHz output. I
wo
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