I can let you know what I've found out about these units - I got given
a couple of dead ones and did a bit of poking around trying to get
them working. I didn't get that far, since one of the units was
easily fixed (the MAX882 3.3V regulator had failed) and the other
seems to have a faulty Rb
Hi Rex,
Those fasteners are both pop rivets and screws. They are an advel design of
light alloy rivet with an external thread and a hexagonal head on the die. They
fasten with standard automatic riveting equipment but can be removed and
re-installed with a allen (hex) key. They work very well.
Pete
Thank you for your information. I agree with your findings and as I pointed
out previously it support the math that the AD 9832 is used for tuning.
That allows them to set the Rb at the optimum operating point based on their
gas mixture. What I like to know is how they control the C
Paul
it is listing # 250911887702 from ggg*fitting. I think we will see prices
dropping even more since there are only so many time-nuts.
Bert Kehren
In a message dated 11/12/2011 10:14:18 P.M. Eastern Standard Time,
paulsw...@gmail.com writes:
Kind of joining in late.
Might this be the
On 11/13/2011 10:36 AM, Peter Bell wrote:
I can let you know what I've found out about these units - I got given
a couple of dead ones and did a bit of poking around trying to get
them working. I didn't get that far, since one of the units was
easily fixed (the MAX882 3.3V regulator had
Yes, I'm quite sure this is how it works - if you scope the snap diode
drive you can quite clearly see both the 60MHz and the 5.3MHz from the
DDS chip mixed together. My assumption is that the DDS output is
subtractively mixed with the 114th harmonic of the 60Mhz inside the
cavity: 60*114 =
Pete
That is exactly the same math I did, there is no other choice but it would
be nice if some one can help on the C field. I just finished mounting it on
a heat sink added a Toshiba 15 V 3 A power supply and a 7805 and will run
it for a month with out changing any thing. Will read it twice
Seems like a lot of folks selling these lately.
Curious minds would like to know why.
On 11/13/2011 07:15 AM, ewkeh...@aol.com wrote:
Pete
That is exactly the same math I did, there is no other choice but it would
be nice if some one can help on the C field. I just finished mounting it on
a
Le 13/11/2011 18:21, Chuck Forsberg WA7KGX N2469R a écrit :
Seems like a lot of folks selling these lately.
Curious minds would like to know why.
I expect they are lots from telecom providers who are are replacing kit
that is being upgraded.
I don't see any date codes on the boxes. Has anyone
Are there any plans to do a new issue of this, does anyone know? I know
the MAX477 is obsolete, but the AD8055 seems to be a pin for pin
replacement, and is even in DIP8.
Even a bare PC board would keep me happy!
Dan
ac6ao
___
time-nuts mailing
here's a different layout
250896271094
-pete
On Sun, Nov 13, 2011 at 3:45 AM, ewkeh...@aol.com wrote:
Paul
it is listing # 250911887702 from ggg*fitting. I think we will see prices
dropping even more since there are only so many time-nuts.
Bert Kehren
In a message dated 11/12/2011
Telcom upgrade, just like where all the Thuderbolts came from
On Sun, Nov 13, 2011 at 9:21 AM, Chuck Forsberg WA7KGX N2469R
c...@omen.com wrote:
Seems like a lot of folks selling these lately.
Curious minds would like to know why.
On 11/13/2011 07:15 AM, ewkeh...@aol.com wrote:
Pete
That
The ones with the 2 labels have a date code as the 4 digit prefix on
the S/N - so a unit that says S/N 0416-756124 was made in week 16
2004. All the ones I've seen date from 2003 or 2004.
The board they were originally attached to was largely empty -
although it did have a label indicating that
Whie we're on elementary sources, has anyone in the group bought a tiny
Cs standard yet?
Don
k4...@aol.com
Just an inkling of the number of cellular base stations out there! And
that's just the ones made by Motorola. There's probably twice or three
times that many made by Lucent (I believe
Hi List,
Does anyone have experience with this GPIB to RS-232 converter:
http://www.webalice.it/hotwater/PicPlot.htm
Thanks,
--
Bob Smither, PhD Circuit Concepts, Inc.
=
If you
I have been working on reading data from my Racal-Dana 1992 counter's GPIB.
I've set the address to 7 and turned on talk only. According to the
manual that
will start sending data from address 15.
I have installed gpib on an old computer running Fedora 16. The GPIB
board is a
ISA bus
Hi Dan,
Have a look at Dave G4HUP's offerings, see http://g4hup.com/DA/DA.htm Full kit
is £30 or about $50.
He also does some other nice kits.
Robert G8RPI.
From: Dan Rae dan...@verizon.net
To: 'Discussion of precise time and frequency measurement'
Hi Chuck,
Check the archive for CIL/MATE Some of these counters used a non standard
militarty ATE protocol. There may be an internal switch/link/jumper to change
to GPIB.
Robert G8RPI.
From: Chuck Forsberg WA7KGX N2469R c...@omen.com
To: time-nuts
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