That is the TAPR TICC small, low cost, open source, two channel time interval
counter. It offers around 60 ps resolution / 100 ps jitter for $200. It's a
rather nifty device...
https://www.tapr.org/kits_ticc.html
--
> Please forgive my ignorance but what is a TICC?
_
> Please forgive my ignorance but what is a TICC?
> Regards
> John P
Short answer:
https://www.febo.com/pages/TICC/
https://www.tapr.org/kits_ticc.html
Long answer:
When working with precise time one of the very first instruments you'll want is
a frequency counter. But when your clocks get ac
Please forgive my ignorance but what is a TICC?
Regards
John P
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most likely the cooper is much ticker than the penetration of the lowest
frequency for which the cable is used, therefore the high frequency
"does not" see the steel inside of the cooper, that steel could cause
problem if the coax also used to carry some power -- DC or AC -- because
at lower fr
A table of a bunch of rg6 catv permutations,
http://www.texcan.com/media/import/pdf/Electronic_Cable_RG6_RG59.pdf
At least on this list if it has a solid copper core, it also has a copper
braid shield. I'm sure there is many more permutations out there.
On Wed, Apr 19, 2017 at 7:00 PM Will Kimber
- Original Message -
From: "jimlux"
To:
Sent: Wednesday, April 19, 2017 11:17 PM
Subject: Re: [time-nuts] Measuring coax temperature coefficient with a TICC
On 4/19/17 11:57 AM, Hal Murray wrote:
kb...@n1k.org said:
I’d want to be pretty sure what the center conductor was
Hi
> On Apr 19, 2017, at 2:57 PM, Hal Murray wrote:
>
>
> kb...@n1k.org said:
>> I’d want to be pretty sure what the center conductor was made out of. I’ve
>> seen some stuff in coax that “one would think” should not be there (copper
>> over steel …).
>
> Does that effect the propagation tim
TV co-ax these days for satellite or UHF is almost all steel wire with
copper plating. In fact the 'F' connector that is used is designed to
use that stiff wire as the center pin of the connector!
Will
On 04/20/2017 06:57 AM, Hal Murray wrote:
> kb...@n1k.org said:
>> I’d want to be pretty s
On 4/19/17 11:57 AM, Hal Murray wrote:
kb...@n1k.org said:
I’d want to be pretty sure what the center conductor was made out of. I’ve
seen some stuff in coax that “one would think†should not be there (copper
over steel …).
Does that effect the propagation time?
If I gave you a goo
Particularly if the cable / wire was made in say the last 10 years. I've seen
a LOT of magnetic supposedly 100% pure (oxygen free, of course) copper wire
lately. Much of it branded by companies with a reputation to lose. It has
gotten so bad, I now check the resistance of all the wire I buy
kb...@n1k.org said:
> Iâd want to be pretty sure what the center conductor was made out of. Iâve
> seen some stuff in coax that âone would thinkâ should not be there (copper
> over steel â¦).
Does that effect the propagation time?
If I gave you a good scope picture of a pulse after goi
Although I didn't have a way to log the temperature, I did have a couple of
thermocouples on the coil of coax. The coil was rather tightly wound... maybe
7" OD, 3"ID, and 3" tall. One thermocouple was on the outside and one buried
in the center of the coil. They stayed within a couple of
Hi
One of the easiest ways to get a slow ramp it to toss the foam box full of
cable out the back door.
Assuming it stays in the shade, you can often get a pretty good 24 hour
temperature cycle. You
still need to monitor things to know what the ramp is. Generally it’s slow
enough that you can
Yes, for a variety of reasons, I would not expect the best results with coax on
a spool. The coax that I tested was a loose coil of coax pre-fabbed with BNC
connectors. It should not have any significant stresses on it than a laid out
100 foot run would. The main purpose of the experiment wa
On 4/19/17 3:34 AM, Bob kb8tq wrote:
Hi
On Apr 18, 2017, at 8:33 PM, jimlux wrote:
On 4/18/17 3:55 PM, Bob kb8tq wrote:
Hi
On something like a 500’ spool of coax, the question will always be “what
temperature is it where in the spool”. A single sensor will
only give you precise informatio
On 15 April 2017 at 02:34, Mark Sims wrote:
> I finally got around to using a TICC to measure the temperature
> coefficient of 100 feet of generic RG-58 coax using a TICC. The TICC was
> clocked by a HP 5071A 10 MHz output. The 1PPS output was connected to the
> input of the coax and the TICC
Hi
> On Apr 18, 2017, at 8:33 PM, jimlux wrote:
>
> On 4/18/17 3:55 PM, Bob kb8tq wrote:
>> Hi
>>
>> On something like a 500’ spool of coax, the question will always be “what
>> temperature is it where in the spool”. A single sensor will
>> only give you precise information if the temperature
On 4/18/17 3:55 PM, Bob kb8tq wrote:
Hi
On something like a 500’ spool of coax, the question will always be “what
temperature is it where in the spool”. A single sensor will
only give you precise information if the temperature ramp is *very* slow (as in
days …).
measure the DC resistance of
Hi
On something like a 500’ spool of coax, the question will always be “what
temperature is it where in the spool”. A single sensor will
only give you precise information if the temperature ramp is *very* slow (as in
days …).
Bob
> On Apr 18, 2017, at 11:50 AM, Mark Sims wrote:
>
> Unfortun
Unfortunately I did not have the ability to log temperature at the time I did
that test. I just added support to Lady Heather for an environmental sensor
so I should be able to do that later on. Currently my environmental sensor
code only does two channels of temperature. I am going to build
The recent supplement to Microwave journal has a piece on phase stability
of cables (predictably - written by a vendor of said cables..):
http://www.microwavejournal.com/publications/1/editions/223
maybe you can recalculate your results in PPM and plot against temperature,
to compare with the mw-j
I finally got around to using a TICC to measure the temperature coefficient of
100 feet of generic RG-58 coax using a TICC. The TICC was clocked by a HP
5071A 10 MHz output. The 1PPS output was connected to the input of the coax
and the TICC chB input. The TICC chA input was connected to the
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