Le 16/10/2011 18:20, Peter Krengel a ecrit :
As expected I got a horizontal line at -127dBm from 10-100Hz.
Unexpectedly level changed from 100-200Hz as a falling curve down to
-132dBm and went on horizontaly further at this level to 1kHz.
During the measurement I observed
The data is nearly all good, so probably not a rs232 rate issue. Looking
at the transformations in the above data,
/ = ?
1 =q
, =
CR = =
m = }
they are all single/multiple bit flips in the top nibble of the
character hex value. Maybe it's a UART that has hickups.
I couldn't find a schematic,
I need an NTP guru for a couple NTP questions. I have my Fury GPSDO hooked
up to a linux (ubuntu) computer have offset in the time-nuts category
(less than a microsecond) with pps. I am wondering where to go from here so
I can actually quantify the precision (it is below the standard minimum for
Le 17/10/2011 16:55, Bill Dailey a écrit :
I need an NTP guru for a couple NTP questions. I have my Fury GPSDO hooked
up to a linux (ubuntu) computer have offset in the time-nuts category
(less than a microsecond) with pps. I am wondering where to go from here so
I can actually quantify the
So where do I get a cheap, used Russian GPSDO?
I have not seen any on EBay
Can I trade them my Tbolt? :)
per:
http://tycho.usno.navy.mil/ptti/1998/Vol%2030_18.pdf
Although not as well known as the GPS, the Russian global satellite
navigation system GLONASS possesses comparable capabilities
David,
I'm in a similar position to you regarding GPS aerials, may I ask where you
obtained your 'better puck'?
John H.
On 17 Oct 2011, at 15:45, David J Taylor wrote:
..
The box was supplied with a generic GPS puck antenna by the eBay seller, and
it's not that
WS,
We are looking to offer Glonass enabled versions of our Jackson Labs Tech
GPSDOs (Firefly-II series) by Q1 next year.
If sufficient interest exists.
Bye,
Said
Sent From iPhone
On Oct 17, 2011, at 8:53, WarrenS warrensjmail-...@yahoo.com wrote:
So where do I get a cheap, used Russian
These must be bloody expensive - I didn't see any
mention of price on their web site.
How do these units compare with Thunderbolts
aside from lower power consumption?
On 10/17/2011 12:25 PM, Said Jackson wrote:
Jackson Labs Tech GPSDOs (Firefly-II series)
--
Chuck Forsberg WA7KGX N2469R
I've just got a Rapco 1804M and while it works, within the limits of my
antenna placement, the RS-232 serial out doesn't read very well, and seems
to have incorrect characters. The voltage levels look OK, and the terminal
emulation program is set to 4800 baud, 8-bit, no parity, one stop
Anyone know where to get one?
--
Doc
Bill Dailey
KXØO
_/\/\/\/\__/\/\/\/\/\/\/\/\__/\/\/\/\___
_/\/\__/\/\__/\/\/\/\/\/\/\/\__/\/\/\/\_
_/\/\/\/\__/\/\__/\/\__/\/\/\__/\/\/\/\_
We're working on getting another run going. Don't have a timeframe yet but
hopefully Real Soon Now.
John
On Oct 17, 2011, at 4:25 PM, Bill Dailey docdai...@gmail.com wrote:
Anyone know where to get one?
--
Doc
Bill Dailey
KXØO
All that's interested, KO4BB now has my RFTGm information on his manuals
section under GPS Timing. Please let me know if you have questions about
it. 73's, Doug, K4CLE
Connected by DROID on Verizon Wireless
-Original message-
From: Randy D. Hunt randy_hunt...@yahoo.com
To:
thanks, what am i seeing here?
55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4
55852 3536.152 0.0 -29.727 0.01068 0.000158 4
55852 3552.152 0.0 -29.727 0.01054 0.000147 4
55852 3568.152 -0.02000 -29.728 0.01074 0.000221 4
55852 3584.152 0.0
On 10/17/2011 02:28 AM, Mark Sims wrote:
Yes, at one time there was some very precision surveying antennas that were temperature
controlled. I'm not sure if they were just controlling just the preamp or the whole
antenna, but I got the impression that they were controlling the temperature
thanks, what am i seeing here?
55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4
55852 3536.152 0.0 -29.727 0.01068 0.000158 4
...
The info is in monopt.html
The details sometimes depend upon which version of ntpd you are using so it's
best to use the documentation that
Fellow time-nuts,
As I have been running TADD-2 dividers (modified for clock-squaring,
i.e. buffering of the squared clock) I get re-occuring events when I
have a flicker noise limit instead of a white noise limit.
This seems to come and go, and I have not yet fully captured its
behaviour.
what i mean is... why would it jump from 0 ns to 1000 ns and back?
On Mon, Oct 17, 2011 at 8:04 PM, Bill Dailey docdai...@gmail.com wrote:
thanks, what am i seeing here?
55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4
55852 3536.152 0.0 -29.727 0.01068 0.000158 4
On Mon, Oct 17, 2011 at 6:34 PM, Bill Dailey docdai...@gmail.com wrote:
what i mean is... why would it jump from 0 ns to 1000 ns and back?
Looks like .01 is the least significant digit. Those three trailing
zeros are just tacked on. So the jump to 1000 and back is really a jump
to 1 and
what i mean is... why would it jump from 0 ns to 1000 ns and back?
What hardware and OS are you running on? Does it take 1 uSec to read the
clock?
ntpd keeps track of the resolution of the system clock. It's measured by how
long it takes to read the clock rather than observing low bits in
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