Rex, let me check status and I will get back with you by Thursday. I am
presently finalizing a detailed outline of the total package.
Bert
In a message dated 12/10/2012 7:23:43 A.M. Eastern Standard Time,
r...@sonic.net writes:
Bert,
I have been waiting for more details to become
Bert,
I have been waiting for more details to become available. Thanks for the
update.
Not sure exactly what this means:
but I have to depend on volunteers to do the drawings and they have to make
their time available when convenient.
Depending on if the input is in some kind of standard,
We have a choice of two dual mixers, my copy of the original NBS with minor
changes and Bill Riley's unit. Comparison tests are ongoing to pick the
best. If Bill's shows better results I plan on laying one out using leaded
components. 2 channel and 4 channel counters are completed and are
What is the status of this project ? I may have missed a few e-mails.
Thanks, Dick, W1KSZ
On 11/19/2012 2:52 PM, ewkeh...@aol.com wrote:
listPlease hold off, tomorrow I will have a detailed description of the
total project. Interest seems to be large and soon we will find a way to make
it
Have achieved around 120db with 3 cascaded 2N3904 CB amps.
Something like a BFQ18 broadband transistor with its built in emitter
ballasting may be a better choice.
They work well in a pushpull CB Norton transformer feedback amp to boost
the +7dBm output of an OCXO to +19dBm.
Unfortunately
Hi
I found that I was past the network analyzers 120 db floor with two stages at
10 MHz.
Actually the reactive termination thing is a bit of a maybe yes / maybe no
sort of thing. It seems to help with some setups and not with others. What does
work just about always is to terminate the mixer
and one more for the list!
regards,
Paul
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of ewkeh...@aol.com
Sent: 19 November 2012 19:53
To: time-nuts@febo.com
Subject: Re: [time-nuts] Nifty MINI TIC for DMTD work
Don
lets see how
Dave
Thank you for your offer. I think I have the documentation solved. Brian,
who helped in the past has offered to help and has some of the previous work
to build on.
As to PIC programming I will ask Juerg to get with you off list.
Bert
In a message dated 11/19/2012 8:47:25 P.M. Eastern
I am interested in one.
- Original Message -
From: cdel...@juno.com
To: time-nuts@febo.com
Sent: Monday, November 19, 2012 8:04 PM
Subject: [time-nuts] Nifty MINI TIC for DMTD work
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren
ewkeh...@aol.com wrote:
The D/M is being revisited because of the counter performance. 1 E-13 is
easily attainable but the Czech IREE published a paper and claim 2 E-15.
Do you mean the paper optimization of dual-mixer time-difference
multiplier ?
The ZCD developed in this is a bit of a
Yes Bruce I have the paper. I am not suggesting to copy it verbatim but if
there is a way to reach reasonable priced 1 E-14 members of the list should
pipe in. I am willing to do an other board. the rest of the systems well
on its way. Einally after three years.
Bert Kehren
In a message
Since mixer noise is one of the limiting factors using a mixer with low
flicker noise will help.
NIST found that a custom mixer using diode connected (collector base
short) 2N222As had a significantly lower flicker phase noise than either
the ZRPD1 or the 10534A.
They used off the shelf 1:5
I'm interested in two...
Thanks,
Steve
On Nov 19, 2012, at 8:04 PM, cdel...@juno.com wrote:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9 digits/Sec. and with a
Typical Minicircuits SMT RF amps have a phase noise at best 20dB worse
(@10Hz offset) than the mixer/phase detector.
Their reverse isolation is quite low (40dB)
The principle reason that the Czech DMTD has such low internal noise is
due to the absence of any isolation amplifiers.
They use the
Hi
Those isolation numbers are *highly* dependent on very good matching at all
ports. That's rarely the case unless you have a bunch of pads running around
the system.
Bob
On Nov 20, 2012, at 5:49 PM, Bruce Griffiths bruce.griffi...@xtra.co.nz wrote:
Typical Minicircuits SMT RF amps have a
The details about matching (if any) used in the Czech DMTD would be
informative.
To avoid degrading the performance of the DMTD system below that imposed
by the mixers any isolation amps used will need a flicker phase noise
floor below that of the mixers.
Even an opamp based isolation
Hi
Given that common practice is to mis-match the IF port on the mixers, it's
probably not realistic to depend on exact match for isolation. Simple / cheap
common base buffers likely are a better approach. Lots of isolation and not
much flicker noise.
Bob
On Nov 20, 2012, at 9:01 PM, Bruce
Yet another... please add me to the list... I'm very interested. Thanks!
On 11/19/2012 2:04 PM, cdel...@juno.com wrote:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9
Hi
A few more parts and likely not quite as much isolation. None of that means it
won't do a good job though.
Bob
On Nov 20, 2012, at 11:20 PM, Bruce Griffiths bruce.griffi...@xtra.co.nz
wrote:
The attached circuit is somewhat more efficient and a little quieter.
With a little elaboration
Reverse isolation at 10MHz is around 43dB.
This can be improved significantly by using a Sziklai pair instead of a
single transistor in each amplifier.
However one could also do this in a CB amp.
Since phase detectors require LO and RF input levels of around 10dBm
either deign should
Hi
A pair of common base amps will get you to what ever your layout will permit. A
single common base at 10 MHz should get you to at least 60 db with a little
care. If you run a reasonable transistor you can run levels that will fry a 10
or a 13 dbm mixer. Again, all the discrete circuits work
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9 digits/Sec. and with a 1HZ offset in the DMTD unit gives a
resolution of 1X10-15th at 10 MHz, 2X10-15 with a 5 MHz input, when
uh, ok, how do we order the boards?
Don L
cdel...@juno.com
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9 digits/Sec. and with a 1HZ offset in the DMTD unit gives a
Don
lets see how much interest and which counter and in the 2 channel it is 3
PIC's and 1 G/A and the 4 channel 5 PIC's and 2 G/A. Easy to solder Juerg
and I are 70+ so soldering is a key consideration
Bert Kehren.
In a message dated 11/19/2012 2:48:39 P.M. Eastern Standard Time,
I'd like to be on the list. Definitely. Where do I have to pay?
Volker
Am 19.11.2012 20:04, schrieb cdel...@juno.com:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9
Sign me in too...
Daniel
Em 19/11/2012 17:57, Volker Esper escreveu:
I'd like to be on the list. Definitely. Where do I have to pay?
Volker
Am 19.11.2012 20:04, schrieb cdel...@juno.com:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren
] Nifty MINI TIC for DMTD work
'd like to be on the list. Definitely. Where do I have to pay?
Volker
m 19.11.2012 20:04, schrieb cdel...@juno.com:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have
As Bert mentioned once the amount if interest is established purchase
details will post.
We also will post a FAQ for this project.
Thanks,
Corby
The New #34;Skinny#34; Fruit
How This Strange 62-Cent African Fruit Is Making Americans
SIgn me up for one!
Bob K6RTM in sunny Silicon Valley
--
Message: 3
Date: Mon, 19 Nov 2012 14:53:16 -0500 (EST)
From: ewkeh...@aol.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Nifty MINI TIC for DMTD work
Message-ID: 2822f.5cd0eab7.3ddbe...@aol.com
At this interest rate you´ll sell more units than Apple will sell Iphone
5´s... ;)
Daniel
Em 19/11/2012 18:15, cdel...@juno.com escreveu:
As Bert mentioned once the amount if interest is established purchase
details will post.
We also will post a FAQ for this project.
Thanks,
Corby
I am interested in one.
Jim Cotton
On 11/19/12 3:28 PM, Daniel Mendes wrote:
At this interest rate you´ll sell more units than Apple will sell
Iphone 5´s... ;)
Daniel
Em 19/11/2012 18:15, cdel...@juno.com escreveu:
As Bert mentioned once the amount if interest is established purchase
I'm interested as well,
Thanks Guys,
Rob.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ewkeh...@aol.com
Sent: Tuesday, November 20, 2012 6:53 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Nifty MINI TIC for DMTD work
Don
lets
Corby and Bert --
Count me in!
John
On Nov 19, 2012, at 3:15 PM, cdel...@juno.com wrote:
As Bert mentioned once the amount if interest is established purchase
details will post.
We also will post a FAQ for this project.
Thanks,
Corby
count me in.
Adrian
cdel...@juno.com schrieb:
As Bert mentioned once the amount if interest is established purchase
details will post.
We also will post a FAQ for this project.
Thanks,
Corby
The New #34;Skinny#34; Fruit
How This
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
Please add my name to the list!
Thank you,
Dave
___
time-nuts mailing list --
I'm interested in one as well.
Alan
On Mon, Nov 19, 2012 at 1:15 PM, cdel...@juno.com wrote:
As Bert mentioned once the amount if interest is established purchase
details will post.
We also will post a FAQ for this project.
Thanks,
Corby
+1 please!
On Nov 19, 2012, at 16:23, mcqu...@sonic.net wrote:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
Please add my name to the list!
Thank you,
Dave
pls add me to your list.
-Don
--
From: Rob S. robe...@dcsi.net.au
Sent: Monday, November 19, 2012 2:57 PM
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Subject: Re: [time-nuts] Nifty MINI TIC for DMTD work
MINI-TIC for DMTD work
Please add me to the list.
Thanks
Maury Sproul
W5UGQ
___
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Allow me to put all this in perspective. Three years ago having just
joined time-nuts I started to be interested in Dual Mixers. Having CS and Rb
my
main interest was and still is low noise signal generators and I have all
the HP equipment for those measurements. Did my first Shera Rb
Please include me in for a kit of the two input unit and I wouldd possibly be
interested in a higher spec unit as well.
Regards
Malcolm
G0MIC
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Waiting with bated breath
JimT
Sent from *my* galaxy.
On Nov 19, 2012 3:53 PM, ewkeh...@aol.com wrote:
listPlease hold off, tomorrow I will have a detailed description of the
total project. Interest seems to be large and soon we will find a way to
make
it available to every one.
Hi Bert,
What kind or sort of documentation is needed?
schematics?
PC layout?
software / firmware documentation?
I've been programming PICs intermittently for 10+ years. Some of my
projects use 2 or 4 line LCD displays. I have given other
microcontrollers a short test spin.
I've also done
Please put a tic next to my name. I am interested as well and await details.
Darrell
- Original Message -
From: cdel...@juno.com
To: time-nuts@febo.com
Sent: Monday, November 19, 2012 11:04:12 AM
Subject: [time-nuts] Nifty MINI TIC for DMTD work
MINI-TIC for DMTD work
Hi Everyone
I'm interested.
BTW, good work!
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of ewkeh...@aol.com
Sent: Monday, November 19, 2012 1:53 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Nifty MINI TIC for DMTD work
Don
lets see
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