Hi
The only gotcha I see on that part is the gain spec. If the module really does
need
30 to 40 db of gain ahead of it, that antenna does not quite make it. That’s
with
zero cable loss. Tack on a typical chunk of cable with 6 db of loss and you are
even further outside of the uBlox
On Tue, Jan 22, 2019 at 12:02 AM Mark Sims wrote:
>
> That looks like the antenna that I am currently using. The were mentioned
> on the list last year, but the cheap ones quickly disappeared and the price
> went to $250-$300. The seem to work very well. I get 6-10 mm error
> ellipses
In message <73db44de-f81e-4a3c-b27a-c9875da91...@n1k.org>, Bob kb8tq writes:
>Once you do replace the TCXO, you then are very dependent on a sawtooth
>correction
>to run your GPSDO. The PPS becomes one big long hanging bridge and thus is not
>useful.
Well...
If you do not have the
A competitor to the Tallysman antennas is Taoglas:
https://www.taoglas.com/product-category/gps-glonass-gnss/l1-l2-l5-antennas/
3.0 v, $77.47 direct
https://cdn.taoglas.com/datasheets/AQHA.50.A.30.pdf
Dave
___
time-nuts mailing list --
Hi,
On 2019-01-22 14:10, Poul-Henning Kamp wrote:
The one thing which is missing is a external frequency input. You can
get a frequency output in its place, but it does not fully replace the
input. That's where the module vs. chip comes in.
Consider talking to sparkfun about how they should do
Have 4 HP5360s and even the keyboard and interconnecting cable.
I did have to home brew a replacement Nixie assembly for one. (It was
missing)
I used orange/yellow 7 segment leds that matched the nixie filter very
nicely.
The same circuit produced an rs 2322 output. Way easier then the 1 MHz
Hi
On a “chip" based setup like this, it’s a matter of pulling the TCXO and
putting in some
wires. Whatever frequency the TCXO used to supply, that’s what your magic
external
device needs to provide. The designers do not seem to allow you to provide a
variety
of input frequencies. Given how
Early in my career while applying for a job as a television engineer I was
asked "What is a meta-stable condition and how do you handle it." Had the
answers, got the job. Well I am sure it was my charm that did the trick.
Maybe not. Chuckle.
Liked the insight on the 5138. Have one in the basement
Hi
If you wan an external input, the Trimble NetRS shows up from time to time in
roughly
the same price range. It will do L1 and L2c.
If you do go the chip route and supply an external input, the chip’s do not do
a cleanup loop
on the input. The phase noise specs on the “required” input are
Hi
Simple answer is:
1) (assuming you just want GPS) to try each of the settings and see what gives
you the best signal to noise. I’d bet they have very little impact if you have
a good
oscillator.
2) If you are building a GPSDO, the only useful setting is USER. There it’s a
matter
of
Hello Time Nuts!
Sunday, January 20, 2019
Thanks for all the replies, I am now in e-mail contact with Alexander
at the sellers place. He asked last night if there's a jumper on the
underside of the GPS board. At first I thought there was a tiny SMC
resistor or capacitor. It was in an
>The one thing which is missing is a external frequency input. You can
>get a frequency output in its place, but it does not fully replace the
>input. That's where the module vs. chip comes in.
Consider talking to sparkfun about how they should do the next version ?
--
Poul-Henning Kamp
Hello Time-Nuts,
Hopefully, this doesn't get too long. What I desire to do is hook up
an external oscillator to a Novatel OEM6 series dual-band GPS
receiver.
Sounds easy. But, Novatel has four fixed (TCXO, OCXO, rubidium,
cesium) plus a USER specifications to model the external clock
Hi,
The one thing which is missing is a external frequency input. You can
get a frequency output in its place, but it does not fully replace the
input. That's where the module vs. chip comes in.
Very tempted to try one out.
Cheers,
Magnus
On 2019-01-22 01:42, Bob kb8tq wrote:
Hi
At least
Hi
I still have a 524 with a 500 MHz plugin sitting in one of my sheds. I used to
keep a fairly large house fan aimed at the critter to keep it from tripping its
Klixon thermal overload switch. A they were the days indeed.
Bob KE6F
-Original Message-
From: Dave Mallery
To:
That looks like the antenna that I am currently using. The were mentioned on
the list last year, but the cheap ones quickly disappeared and the price went
to $250-$300. The seem to work very well. I get 6-10 mm error ellipses using
L1/L2 GPS on a Trimble NetRS. They have no problem with
In message <9cc8db95-438a-4491-89db-b55e22996...@n1k.org>, Bob kb8tq writes:
>At least at this point things like sawtooth correction outputs are still a
>“who knows if there is one”
>kind of thing. Doing a GPSDO and not having sawtooth corrected out is sort of
>a letdown ….
>Stuff gets
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