Hi
This is one of those classic examples of what marketing writes and what
(once the beer is poured) engineering actually knows. If you dive into the
grubby details of the filtering. Been there / done that with a number of
these guys.
It’s very much *not* set up for GPS. The hanging bridge
Bob, I seem to remember reading in the manual on the PRS-10 where they
expounded
at length about how they took great pains to make the unit work well with
typical noisy
GPS PPS input.
I'm using a CNS Clock II as my primary GPSDO, checking phase slippage with
respect
to my PRS-10 to make decisions
Bob kb8tq writes:
> The 'filter' in the PRS-10 is not really set up for a GPS sort of signal.
It is particularly bad at handling GPS's because of the "hanging bridge"
phenomena, and the better the GPS, the worse the result...
I tried injecting the "negative sawtooth" via the serial
Hi
The 5 Hz (or whatever) switching and the hump definitely both
originate in the same “feature” of the design. Does disabling the
switching nuke the hump? If one has a PRS-10 I’d say it’s well
worth trying.
The “filter” in the PRS-10 is not really set up for a GPS sort of
signal. It’s
Dana Whitlow writes:
> You did not really answer the basic question: "Does the 2.5 Hz
> (or 5 Hz if applicable) C-field reversal cause the 2-sec bump in
> the ADEV plot for the PRS-10?".
I cannot answer that question as stated.
My PRS10 died years ago, all I can say is that when I
Poul,
You did not really answer the basic question: "Does the 2.5 Hz
(or 5 Hz if applicable) C-field reversal cause the 2-sec bump in
the ADEV plot for the PRS-10?".
BTW, some radio hams are involved with microwave and even
MMW communications between mobile stations, and I'd bet they
benefit
Matt Huszagh writes:
> "Poul-Henning Kamp" writes:
>
> > The PRS-10 switches the polarity of the C-field solenoid at 5Hz to
> > cancel out varying external magnetic fields.
> >
> > If that is not a concern for you, for instance because you use it
> > in a stationary application, it can
"Poul-Henning Kamp" writes:
> The PRS-10 switches the polarity of the C-field solenoid at 5Hz to
> cancel out varying external magnetic fields.
>
> If that is not a concern for you, for instance because you use it
> in a stationary application, it can be disabled with the "MS0" command.
>
> It's
Dana Whitlow writes:
> But if you can stand the ADEV hump around 2 sec, the PRS-10 is delightful.
The PRS-10 switches the polarity of the C-field solenoid at 5Hz to
cancel out varying external magnetic fields.
If that is not a concern for you, for instance because you use it
in a
Hi Dana:
My PRS10 is a couple decades old and I use it in the 1PPS locking mode. But that may not have been the default. Maybe
the surplus units just need the correct jumper change.
https://prc68.com/I/PRS10.shtml
--
Have Fun,
Brooke Clarke
https://www.PRC68.com
axioms:
1. The extent to
Dana Whitlow writes:
> But if you can stand the ADEV hump around 2 sec, the PRS-10 is delightful.
>
> BTW, the ordinary factory new PRS-10 does provide for direct locking to 1
> PPS,
> but many of the available surplus units had that feature removed. Tne new
> PRS-10's sold for years for $1595,
But if you can stand the ADEV hump around 2 sec, the PRS-10 is delightful.
BTW, the ordinary factory new PRS-10 does provide for direct locking to 1
PPS,
but many of the available surplus units had that feature removed. Tne new
PRS-10's sold for years for $1595, but I see that it has gone up to
Bob kb8tq writes:
> I have a 740 as do others on the list. The big gotcha is the OCXO in the
> device.
> It has various quirks that limit the performance of the device. The ADEV plot
> they
> show for the OCXO is a “sometimes / maybe / might” sort of thing. One of the
> “get to it eventually”
Hi
In this case it’s not thermal. I’ve tested a ton of parts in the same
environment ( maybe
not 2,000 pounds but several hundred OCXO’s ).
The PRS-10 gives you that hump at 2 seconds no matter what you do. It’s part of
the
basic design of the unit ….
Bob
> On Nov 17, 2021, at 10:16 AM,
Hi
I have a 740 as do others on the list. The big gotcha is the OCXO in the device.
It has various quirks that limit the performance of the device. The ADEV plot
they
show for the OCXO is a “sometimes / maybe / might” sort of thing. One of the
“get to it eventually” projects here is to see if
15 matches
Mail list logo
