-nuts@febo.com
Subject: [time-nuts] Lady Heather numbers
Garren Davis garren.davis at qlogic.com Tue Mar 12 12:55:48 EDT 2013
I found the 1 ohm resistor from the 12 volt pin to the heater circuit
popped off its solder pads and was laying between the insulation and
the metal enclosure
unsoldered themselves because the
oven ran away into an over-temp condition.
On 3/12/2013 9:55 AM, Garren Davis wrote:
Bob,
Took your advice and ordered another OCXO. While waiting for it I decided to
cut open the
OCXO with a bad heater that came with the thunderbolt. I found the 1 ohm
should be hours, not ~ 2 minutes.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Tuesday, March 05, 2013 11:04 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lady Heather numbers
...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Wednesday, February 27, 2013 10:27 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lady Heather numbers
Warren,
Thanks for the comments. I've included a 34 hour screen dump. Trying
temperature. Roughly a 0.008 C temperature change would explain the
movement you see.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Wednesday, February 27, 2013 1:20 PM
To: Discussion of precise time
are in China. Is that correct?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Garren Davis
Sent: Monday, February 25, 2013 11:00 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Lady Heather numbers
...@febo.com]
On Behalf Of Garren Davis
Sent: Monday, February 25, 2013 12:00 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Lady Heather numbers
Hi,
I have been playing with my thunderbolt and Lady Heather over the
weekend. I hope it's ok that I attached
25, 2013, at 7:39 PM, Garren Davis garren.da...@qlogic.com wrote:
The antenna has a pretty clear view of the sky. I notice that whenever
a satellite drops out it causes the oscillator white trace and the DAC
green trace to jump around. I wonder why that happens when there are 6 other
good
, if you want to optimize the setting, LH
has all kinds of tools to help, such as the sat signal strength plot.
ws
-Chuck Harris
Garren Davis wrote:
The antenna has a pretty clear view of the sky. I notice that
whenever a satellite drops out it causes the oscillator white trace
Hi,
I have been playing with my thunderbolt and Lady Heather over the weekend. I
hope it's ok
that I attached a screen dump of what I have. Can anyone comment on the
picture. It's been
running less than a day and I don't know if what I have would be considered
good as far as
accuracy and
knows where it will finish
out at.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Monday, February 25, 2013 12:00 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Lady Heather
Of Garren Davis
Sent: Monday, February 25, 2013 12:00 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Lady Heather numbers
Hi,
I have been playing with my thunderbolt and Lady Heather over the weekend. I
hope it's ok that I attached a screen dump of what I have
] Lady Heather numbers
If I am not mistaken (and I could be), the Lat/Long suggests that you are in
China. Is that correct?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Monday, February 25, 2013 11:00 AM
of the picture limits the ability to make a 'long term'
assessment. However, looks reasonable compared to mine in NW Florida except
the temps seem a bit higher.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Garren Davis
Sent: Monday
, Garren Davis garren.da...@qlogic.com wrote:
Found my problem with the FRK. R31 on the Osc board was burned and open. This
was caused by a shorted C16. Replaced and it is now locked. The lock voltage
is 12.7v. Is this good or should it be lower?
Garren
On Feb 9, 2013, at 6:10 AM, Bob Camp
are right on the money. It's for fine
tuning after you have a stable lock. It won't help you obtain or maintain a
lock. You won't be able to adjust it without a known, stable
10 MHz reference source like the Tbolt and some good measurement equipment.
Ed
On 2/10/2013 9:27 AM, Garren Davis wrote
that voltage closer to
the middle of it's range.
Ed
On 2/9/2013 11:38 AM, Garren Davis wrote:
Found my problem with the FRK. R31 on the Osc board was burned and open.
This was caused by a shorted C16. Replaced and it is now locked. The lock
voltage is 12.7v. Is this good or should
about 10X more
than it should.
Bob
On Feb 9, 2013, at 10:01 AM, Garren Davis garren.da...@qlogic.com wrote:
Thanks for the reply.
I found that the 12v current is only 60ma. I suppose that means the Osc.
heater is not working. I'm not having much luck with this time nuts stuff.
First
it malfunction.
Bob
On Feb 9, 2013, at 1:09 AM, Garren Davis garren.da...@qlogic.com wrote:
Well for some reason the 10 Mhz stopped working on the FRK. Don't know why.
Started up the thunderbolt. It acquired satellites but then the DAC voltage
went to -5 volts. It's been there for an hour
On 2/8/2013 6:12 PM, Garren Davis wrote:
Been lurking on the list for a while and finally started playing with a
FRK-L rubidium frequency standard. I've had this thing for a while and
decided to power it up and see what it would do. I do not get a lock. What
I see is the lamp voltage
Been lurking on the list for a while and finally started playing with a FRK-L
rubidium frequency standard. I've had
this thing for a while and decided to power it up and see what it would do. I
do not get a lock. What I see is the
lamp voltage at 8.54 volts which I think is good but the xtal
--
From: Garren Davis garren.da...@qlogic.com
Sent: Friday, February 08, 2013 7:12 PM
To: time-nuts@febo.com
Subject: [time-nuts] FRK-L Rubidium
Been lurking on the list for a while and finally started playing with a
FRK-L rubidium frequency standard
. That won't help you at this point. The adjustment
in the center of one side is the VCO. You could try adjusting it, but like I
said, you're flying blind at this point. You won't know if you're adjusting
closer to 10 MHz or further away.
Good luck,
Ed
On 2/8/2013 6:12 PM, Garren Davis
I don't remember what day it was but last week I looked at my TAC32 program
and noticed it had lost lock. It showed no satellites tracked. I restarted
TAC32 and all was well. I use a Motorola Oncore and thought it might be
something to do with daylight saving time changing.
Garren
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