On 1/24/19 12:58 PM, jimlux wrote:
On 1/24/19 1:04 AM, Magnus Danielson wrote:
Hi Luciano,
Thanks for that overview, I was kind of looking for something like that
and hoping that someone had some form of overview.
It looks like this is a spec-sheet based investigation. Wonder if we
could
On Thu, Jan 24, 2019 at 2:01 PM jimlux wrote:
>
> At least one version is available from Mouser for $85.
>
> And I'm sure if I wanted to order one with something slightly different,
> Vectron would do it.
>
>
>
>From my previous experience (asking for a custom frequency TCXO) Vectron's
business
I am not sure if it's the same Dymec, but I may have heard of them. This
was a few decades ago. Among other things, they made wonderful modular
voltage-to-frequency converters. I was a young engineer and I thought
their V-F was amazing. We used their 0-10MHz model, which seemed darn good
back
On 1/24/19 1:04 AM, Magnus Danielson wrote:
Hi Luciano,
Thanks for that overview, I was kind of looking for something like that
and hoping that someone had some form of overview.
It looks like this is a spec-sheet based investigation. Wonder if we
could collect up a measurement based one.
HiI use the Moto 12080 prescaler chip for that application on my various
counters. it's strappable for Div by 10 and works in excess of 1 GHz, easy to
feed. Sensitivity in the -20 Dbm range 50 ohms. SMT package. Cheap too. I
have some excess boards 3/8 inch by 1 1/2 inch with on-board
Poul-Henning Kamp writes:
> The TODO point is to take a RaspBerry Pi, run a tight loop with all
> which wiggles a GPIO pin with all interrupts disabled, and measure
> the phase noise.
You'll quickly find out that the ARM part of the BCM SoC is not fully in
command. The VC4 GPU is calling all the
Dymec abbreviated it's name to dy but with a font that looked like hp but
written upside down.
If I recall correctly the Dymec instrument I used in 1970 was supplied with
an HP manual.
Ton PA0TBR
On Thu, 24 Jan 2019 at 19:03, Wes wrote:
> A little more topic drift, but on the subject of books
A little more topic drift, but on the subject of books about HP (forgive me if
this one has already been mentioned) I have a copy of "Inventions of
Opportunity: Matching Technology with Market Needs". This is mostly selections
from HP Journal with an introduction by Bill Hewlett.
It does
Mark,
I had pretty good luck with a Hittite prescaler built into a board for the
5328 as outlined by Bert, VE2ZAZ.
http://ve2zaz.net/hp5328a/hp5328a_prescaler.htm
It's a wee bit deaf as frequency goes up, but works just fine!
Bob
On Thu, Jan 24, 2019 at 1:00 AM Mark Spencer
wrote:
> Hi:
>
On 1/24/2019 5:17 AM, Bob kb8tq wrote:
Hi
If you have a one time need to get to 1.3 GHz then some sort of cobbled
together dead bug chip solution
would be my pick of how to get it done. Cost wise it wold be hard to beat.
There are also cooled up approaches
It may seem like prescalers are a
On 1/23/19 9:22 PM, Richard (Rick) Karlquist wrote:
On 1/23/2019 7:59 PM, jimlux wrote:
My idea was to get an OCXO without the oven (or with the oven
disabled) - the idea was that an OCXO will have high Q for good phase
noise, and I can deal with the frequency shift due to frequency and
Hi Luciano,
Thanks for that overview, I was kind of looking for something like that
and hoping that someone had some form of overview.
It looks like this is a spec-sheet based investigation. Wonder if we
could collect up a measurement based one.
Cheers,
Magnus
On 1/24/19 8:28 AM,
Hi
If you have a one time need to get to 1.3 GHz then some sort of cobbled
together dead bug chip solution
would be my pick of how to get it done. Cost wise it wold be hard to beat.
There are also cooled up approaches
with signal generators and mixers ( no don’t go there …).
If you will be
Hi Jerry,
As agreed I now reply on-list. (Jerry replied off-list but I think this
would be a good additional comment on-list he consented to me posting
this here)
A valuable reference-point as this predates the 5360A by two years, but
show the main property so it is a very valid contender.
Hi,
This is also relevant to my experiments with SDR.
For my purposes I added a reverse biased blue LED to each pin on the crystal.
On my radio reversing it so the crystal was on the back revealed the two pads
someone
had forgotten to put capacitors on explaining one of the problems.
This
On Wed, Jan 23, 2019 at 11:00 PM Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:
>
>
> The 10811 brings out oven and oscillator power separately. However,
> if you don't power up the oven, the crystal will be way off frequency
> so your idea is a non-starter.
>
>
Not to go too far off
Magnus,
here the list of the most interesting OCXO with the phase noise as declared
by the companies.
Luciano
http://www.timeok.it/wp-content/uploads/2015/08/ocxo-comparative-table1.pdf
Da "time-nuts" time-nuts-boun...@lists.febo.com
A "Discussion of precise time and
This looks ideal to me:
https://www.u-blox.com/sites/default/files/RCB-F9T_ProductSummary_%28UBX-18069985%29.pdf
-Dustin
On Wed, Jan 23, 2019 at 8:01 PM Angus via time-nuts
wrote:
>
> Hi,
>
> It doesn't look like the F9P does anything special for timing - the
> timing specs given in the F9T
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