Hi
Not in the least bit uncommon propagation at those frequencies and this time
of year.
Bob
> On Jul 16, 2017, at 8:44 PM, Clay Autery wrote:
>
> Prop shifted... I tuned to it before I left for Home Depot at 1600 hrs
> CST, and it was strong It was GONE by 1830 hrs.
>
> ___
Solar wind conditions is such that right now things is flakey.
Cheers,
Magnus (at 1400 m in Lichtenstein on a mini DX expedition - we had to
give up for the night)
On 07/17/2017 02:44 AM, Clay Autery wrote:
Prop shifted... I tuned to it before I left for Home Depot at 1600 hrs
CST, and it wa
HI
This is a limitation on an OCXO based GPSDO. That’s really the bottom line
here.
It’s a limitation in an OCXO based part, but not in one based on an Rb or a Cs.
If
the added component costs far more than a Cs, it’s not an answer.
Bob
> On Jul 16, 2017, at 7:25 PM, Chris Albertson
> wrot
Prop shifted... I tuned to it before I left for Home Depot at 1600 hrs
CST, and it was strong It was GONE by 1830 hrs.
__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389
On 7/16/2017 6:32 PM, paul swed wrote:
> Not hearing wwv on 25 MHz but 15 is fine. Using a beam a
What about josephson standards? After all, this is "Time Nuts" and we are
allowed to propose silly-complex solutions to simple problems if it
improves performance even a little.
But seriously I thought the issue of making a perfect voltage standard was
solved because the Volt is defined to be wh
FYI...
I was hearing WWV/25 several weeks ago peaking
S8 here in Central Texas... WWV/20 was inaudible! ;-)
Path 155 degrees 795 miles...
Below from the NIST.gov Web Page:
As of 2042 UTC 7 July 2017 the 25 MHz broadcast is now on a turnstile antenna
with circular polarization and will
On Jul 16, 2017 4:49 PM, "Brian, WA1ZMS" wrote:
FWIW.We're at an 11 yr low for solar activity. Thus no big suprise that
25MHz is not covering the US very well, but a rare opening is always
possible.
+1 de ai6kg
___
time-nuts mailing list -- time-n
FWIW.We're at an 11 yr low for solar activity. Thus no big suprise that
25MHz is not covering the US very well, but a rare opening is always possible.
-Brian
> On Jul 16, 2017, at 7:32 PM, paul swed wrote:
>
> Not hearing wwv on 25 MHz but 15 is fine. Using a beam and r1051 receiver.
> Mayb
Not hearing wwv on 25 MHz but 15 is fine. Using a beam and r1051 receiver.
Maybe its not on for the weekend. Its a 2 KW signal so should be able to
hear something.
Regards
Paul
WB8TSL
On Fri, Jul 14, 2017 at 9:29 PM, paul swed wrote:
> Sorry its a bit lower in the site that they resumed broadcas
Hi
> On Jul 16, 2017, at 6:33 PM, Richard (Rick) Karlquist
> wrote:
>
>
>
> On 7/16/2017 1:51 PM, Bob kb8tq wrote:
>> Hi
>> One gotcha with any ADC or DAC is going to be the reference. There, you are
>> in the same
>> “get what you pay for” dilemma. Stable and noisy, can do. Quiet and not ve
On 7/16/2017 1:51 PM, Bob kb8tq wrote:
Hi
One gotcha with any ADC or DAC is going to be the reference. There, you are in
the same
“get what you pay for” dilemma. Stable and noisy, can do. Quiet and not very
stable, can do.
Both stable and quiet, not so easy if you want it cheap.
Noise can a
Hi
One gotcha with any ADC or DAC is going to be the reference. There, you are in
the same
“get what you pay for” dilemma. Stable and noisy, can do. Quiet and not very
stable, can do.
Both stable and quiet, not so easy if you want it cheap.
Noise can also be the sigma delta ADC’s weak point.
Bert wrote:
We limited to affordable and solderable.
The LTC1655 was the clear winner because
of linearity and temperature
* * *
Five years later I know no better alternative
Well, to name just the first one that comes to mind, how about the
LTC1650? Like the 1655, it is a
As part of our GPSDO work Richard Mc Corkle and I tested multiple DAC's
using hardware I developed and Richard wrote the code. We limited to
affordable and solderable. The LTC1655 was the clear winner because of
linearity and
temperature, see attached. We tested dithering 20 bits and stackin
On Sat, 8 Jul 2017 11:42:44 -0700
Tim Lister wrote:
> Forgive the ignorance, but why is there a large disparity between ADC
> and DAC capabilities ?
> For example, Linear Technology sell a 24 bit ADC for ~$7 but an 18 bit
> DAC is $30-50...
Much simplified, it boils down to it being easier to me
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