kuze...@gmail.com said:
And that's with a $6 navigation GPS thingy (USB puck-type NMEA-only)
Where did you get one for $6? What make/model/brand?
That's navigation... Timing mode only needs 1 satellite lock after all,
and I suspect I will at minimum be able to get needed 1 satellite lock
From: Hal Murray
[]
Timing mode also needs special firmware. I haven't seen any of the low cost
units that come with timing mode.
Does anybody have a favorite low cost timing mode unit? How about one with
minimal soldering required?
Hal,
I see
Take care that the 1 satellite timing mode comes after having seens more
than 4 satellites for at least 1 seconds (usually, or greater). You
can't start a timing mode receiver with 1 satellite.
On Thu, Oct 18, 2012 at 9:46 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
From: Hal
You are measuring your counter stability, not the GPSDO stability. A locked
GPSDO is way better than any free running counter if driven by its internal
timebase oscillator.
On Thu, Oct 18, 2012 at 8:39 AM, Rob S. robe...@dcsi.net.au wrote:
Hello Group, first time post
I have just got my
On 10/18/2012 6:17 AM, Azelio Boriani wrote:
Take care that the 1 satellite timing mode comes after having seens more
than 4 satellites for at least 1 seconds (usually, or greater). You
can't start a timing mode receiver with 1 satellite.
Yes, you can. You only need to tell it its own
OK, unless you have the coordinates of your antenna position... and here
comes the difficult move: how can I have the coordinates of an indoor
antenna that can't receive the required satellites? Starting from a
suitable outdoor position then using precise length and angle measurements,
yes, it can
Hi
This comes back to the what are you trying to do? question. If the target
is better than 1 ms, then the location does not have to be all that
accurate. You can get within a hundred meters using a good map, and some
care about coordinate systems. That's adequate for a 1 ms design.
Without an
OK, unless you have the coordinates of your antenna position... and here
comes the difficult move: how can I have the coordinates of an indoor
antenna that can't receive the required satellites? Starting from a
suitable outdoor position then using precise length and angle measurements,
yes,
OK, indeed I was assuming to have the PPS with the best precision anyway.
Well, in this case I agree. Galileo? Yes, I can try with the LEA-5T. I have
to figure out how to set it so that only Galileo SVs are received. And: I
don't think Galileo is meant for EU only, you can test it too. Are the
On Wed, Oct 17, 2012 at 4:48 PM, Sarah White kuze...@gmail.com wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 10/17/2012 6:04 PM, Chris Albertson wrote:
((...snip...)) -- 1
Indoor antennas can work. It depands on the details. Hopefully
the skylight looks to the south. BTW that
albertson.ch...@gmail.com said:
But yu are in luck, iLotus does sell an M12M evaluation kit that is ready to
use http://www.ilotus.com.sg/m12m_uart_evaluation_kit but the price is
higher.
That web page says:
SiRF Oncore(tm) Software
What's the relation between SiRF and i-Lotus?
Anybody
azelio.bori...@screen.it said:
OK, unless you have the coordinates of your antenna position... and here
comes the difficult move: how can I have the coordinates of an indoor
antenna that can't receive the required satellites?
It depends upon how bad your indoor setup is. Mine is poor, not
Hello,
I found the 10811 in my 8662A to be quite noisy and was able to trace
the problem down to the tuning diode.
Actually, the phase noise started to jump when the oven heated up. As a
quick solution, I replaced it with a SMD type that I had at hands.
I would appreciate any hint where to
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On 10/18/2012 3:33 AM, Hal Murray wrote:
((...snip...))
Where did you get one for $6? What make/model/brand?
((...snip...))
Does anybody have a favorite low cost timing mode unit? How about
one with minimal soldering required?
Does anybody have a favorite low cost timing mode unit? How about
one with minimal soldering required?
kuze...@gmail.com said:
http://www.ankaka.com/usb-gps-receiver-for-computers-laptop-worked-as-gps-nav
igator_p46411.html
AGI-G217 USB GPS Receiver
That web page says:
Uses SiRF Star
That would be a Motorola MV1650 or equivalent. You may have to select
for 100pf +/- 5% @ 4V as the standard spec is 10% but it probably does
not matter as the tuning ratio will be greater than the 2 spec.
David
On 10/18/12 3:18 PM, Adrian wrote:
Hello,
I found the 10811 in my 8662A to be
I got my dinosaur up and healthy again.
The code Ed Moxon suggested worked great with some monor tweaks to my
program.
10 'run gwbasic com port at high baudrate by poking divisor latch
100 OPEN COM1:9600,N,8,1 AS 1 '9600 is 115200/12, so latch is now 12
110 UBASE = h3f8: LCR=UBASE+3 'uart i/o
Probably unobtainium.
0122-0244 is shown as Motorola SMV315-24 or MSI Electronics SQ529.
For whatever that's worth. Reminds me of a popular audio amplifier
design that was in Popular Electronics using Motorola SS1122 diodes.
Some special non catalog diode. Turns out Dan Myers, the designer,
Thank you for the reply Azelio,
I wasn't sure where to start with the drift...
Cheers,
Rob.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Thursday, October 18, 2012 8:21 PM
To: Discussion of precise time and
On 10/18/2012 1:20 PM, saidj...@aol.com wrote:
Let the GPS average the antenna position over a very long time.
On a good GPSDO one can select the number of averages, and the position
variance before the survey is finished, and the (now very precise) position
is
stored in memory.
Thanks!
Have fun experimenting
Said
Sent From iPhone
On Oct 18, 2012, at 18:54, Sarah White kuze...@gmail.com wrote:
On 10/18/2012 1:20 PM, saidj...@aol.com wrote:
Let the GPS average the antenna position over a very long time.
On a good GPSDO one can select the number of averages, and
That's extremely interesting, Adrian. I've never heard of a noisy varactor,
but then I've never looked for one, either. It'd be great if some of the
problems that have been blamed on jumping crystals were in fact caused by
the tuning diode. What steps did you take to rule out the crystal and
On Thu, Oct 18, 2012 at 11:42 AM, Hal Murray hmur...@megapathdsl.net wrote:
albertson.ch...@gmail.com said:
But yu are in luck, iLotus does sell an M12M evaluation kit that is ready to
use http://www.ilotus.com.sg/m12m_uart_evaluation_kit but the price is
higher.
That web page says:
SiRF
I'll second the interesting part.
I have a problem with a 10 GHz brick oscillator LO that I converted to GPS
lock. I don't remember the instantaneous frequency jumps (around 200 - 400 HZ
at 10 GHz) before I did the GPS lock (although it's possible). Please note
that this is NOT any type of
On 1/14/12 9:18 PM, Chris Albertson wrote:
Not over kill at all. It is worth paying a few $$ not to have to
design a PCB. Worse then that is that most will take shortcuts and
design it so that you need a sppepcial IC programmer to program the
PIC. Thee $20 development boards allow you to
25 matches
Mail list logo
