Hello,
I'm new to the list and to the themes at all. I'm running a V3 Thunderbolt
using the great Lady Heather Software (thanks for this).
Setting up the tbold for the first time I made a 48h survey.
To compare the results I also started a SirF III GPS using VisualGPS
software and after the 48h
To John WA4WDL:
The coordinates out of my current (fixed) position calculated by
the SirF GPS and the tbold during a 48h survey are different.
On a map this differences makes up a shift of up to 100m around
my true qth. With other words if I would (and could) use the tbold
as a mobile GPS I woul
What do you mean by "totally different results"? What were the readings or
the differences?
John WA4WDL
--
From: "Peter Krengel"
Sent: Thursday, August 19, 2010 12:28 PM
To:
Subject: [time-nuts] Different Survey Results
t save the
location.
ws
***
[time-nuts] Different Survey Results
Peter Krengel krengeldatec at gmx.de
Thu Aug 19 16:28:52 UTC 2010
Hello,
I'm new to the list and to the themes at all. I'm running a V3 Thunderbolt
using the great Lady Heather Software (thanks for this).
rsday, August 19, 2010 12:29 PM
To: time-nuts@febo.com
Subject: [time-nuts] Different Survey Results
Hello,
I'm new to the list and to the themes at all. I'm running a V3 Thunderbolt
using the great Lady Heather Software (thanks for this).
Setting up the tbold for the first time I made
Hi Peter,
Are you sure your known truth coordinates are in WGS84 datum?
--
Björn
> To John WA4WDL:
>
> The coordinates out of my current (fixed) position calculated by
> the SirF GPS and the tbold during a 48h survey are different.
> On a map this differences makes up a shift of up to 100m
ot;'Discussion of precise time and frequency measurement'"
Subject: Re: [time-nuts] Different Survey Results
Hi
A few other things to try / consider:
1) Hit the "auto calibrate" function in LH to calibrate the slope of the
OCXO, it will also load some damping and tim
Peter,
My TB is running continuously during months.
It draws about 7 W using the black PWR-supply proposed by Tom (TvB).
In the room at about 22 °C it does show 32.43 °C, I never passed 37 °C.
So I would propose to net go beyond the 40 °C internal temp. reading. I
will manufacture a wooden box wi
Hi
The TBolt is rated to 70 C. You probably are ok running them at 50 C. The OCXO
does not mind the heat and there's nothing else in there that has any
noticeable heat rise.
If you text search for "pool of mercury" in the archives you will hit a thread
that goes into the details (and impractic
