I'm thinking of buying a Panasonic VIC100 timing antenna with a 50 ohm TNC
connector (I assume) from fluke.l on eBay, as the room I use for my den has
moved to one without a view to the south, so I can't use the puck antenna
mounted just outside the window any more.
The T-Bolt manual recommends 75
Gents,
perhaps you have read that since a few days I am the owner of a Z3805 bought
on eBAy from fluke.I.
The other day a friend of mine visited me and brought his GPSCON with him to
test it on my Z3805. As fluke.I had pointed out, the GPSCON would work with
the Z3805 but it would not work reall
> Message: 9
> Date: Tue, 23 Jun 2009 09:28:44 +0100
> From: "David C. Partridge"
> Subject: [time-nuts] TNC connectors
>
> I'm thinking of buying a Panasonic VIC100 timing antenna with
> a 50 ohm TNC connector (I assume) from fluke.l on eBay, as the room I
use
> for my den has moved to one wit
In a message dated 23/06/2009 09:29:38 GMT Daylight Time,
david.partri...@dsl.pipex.com writes:
The T-Bolt manual recommends 75 ohm coax, so will a 75 ohm TNC mate with a
50 ohm TNC without problems? Though I suppose for a short run of cable,
50
ohm will be OK?
-
H
In a message dated 23/06/2009 11:00:13 GMT Daylight Time, d...@uk-ar.co.uk
writes:
However, it's years since I saw a 75r version, so I don't know for sure.
Doing that with BNC's will lead to a flaky connection, as the centre pin
on the 75r ones is much smaller. The other way round (50r plu
Hi Dave,
The Solartron 7081 is very happy and so am I :-). Thanks yet again for all
your help.
Re: different sized centre pins - I know that's true of "N" type connectors,
- you really don't want to push an N type male 50R into an N type female
75R connector. However I'm pretty sure that it d
David,
I used a piece of pvc conduit to mount the antenna. It fits in the
vic-100's mounting skirt. If it does not have a mounting skirt, perhaps
use a flange and drill the appropriate holes, apply RTV (or your
favorite sealant!).
Norm
(The divider board is working like a charm!! Even impresse
Norman,
PVC conduit sounds like a good solution.
I'm delighted to hear the frequency divider board is performing good
service. I was rather surprised when there was insufficient interest to
justify getting a further batch of boards made up.
I'm pretty sure it would out-perform any micro based s
Dave Baxter wrote:
Doing that with BNC's will lead to a flaky connection, as the centre pin
on the 75r ones is much smaller. The other way round (50r plug into 75r
socket) will damage the socket. As TNC's are very similar to BNC's ???
You are thinking of the incompatibility between 50 ohm an
> Message: 3
> Date: Tue, 23 Jun 2009 07:54:02 -0400
> From: Chuck Harris
> Subject: Re: [time-nuts] TNC connectors
> To: Discussion of precise time and frequency measurement
>
> Message-ID: <4a40c25a.7080...@erols.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Dave
Hmmm now all I have to do is find a TNC connector to fit FT100 (or RG6)
without paying 5 times thet value of the connector for shipping - or just
use RG58 as I've got BNC for this, and can easily get TNC for it too.
Thanks to all
Dave
-Original Message-
From: time-nuts-boun...@febo.com [m
Dave Baxter wrote:
Indeed looking as some more data sheets.
However, I have somewhere in the deed box at home, some Ex BT BNC's,
marked up as 75 Ohm, that have very much smaller center pin's than the
common or garden 50r types, as well as less plastic in there too.
Connectors that deviate fro
I just bought two of these antennas from Bob (fluke.l) and asked him to
throw in adapters from TNC on the antenna to female F so I can use ordinary
75 ohm cable TV coax from rat shack. He charged an extra $5 for the
adapters which I think is a pretty good deal. Still waiting on delivery so
I don'
[snip]
On my FTS antenna it's just a standard 1" NPT male thread (NPT = National
Pipe Thread). Any US plumbing supply store or home improvement store will
sell you iron pipe threaded that way or adapters to go to PVC or copper.
-John
> PS Where do you get the (1" diameter?) threa
If the thread measures 1 inch, it isn't 1 inch pipe thread. It is
more likely 1/2 inch pipe thread, or possibly 3/4 inch, depending on
how accurately you measured. 1 inch pipe is 1-3/8 inch OD, 3/4 inch
pipe is 1-1/16 inch OD, and 3/4 inch pipe is 7/8 inch OD.
-Chuck Harris
J. Forster wrote:
I just took the antenna to Home Depot and looked through the bins, found
something that fit well, paid, and left. LoL. Whatever the nominal Pipe
size, mine is NPT for sure.
-John
==
> If the thread measures 1 inch, it isn't 1 inch pipe thread. It is
> more likely 1/2 inch pipe thread, o
Hello Dave,
I looked for that antenna but could not find it, to understand how to
mate to it.
Consider using to a coaxial adapter at the antenna, TNC male to BNC female.
Then put a BNC male connector on whatever coax you will be using.
In an ideal world, a 75 ohm TNC will NOT mate a 50 oh
Chuck, please realise we're in the UK, not the US, so things are significantly
different in many ways...
"TV coax" hear is really cheap cruddy stuff, if you're very lucky you might get
50% braid/shielding coverage! There was no real need to prevent ingress or
egress of signals, as (other than
> Chuck, please realise we're in the UK
[snip]
> Metric vs Imperial: Wasn't the USA supposed to go Metric decades ago?
> Many instrument makers managed it (IBM, HP, TEK etc.) But the folklore I
> remember when I was in the US just down 101 from San Jose back in the
> early 90's, states that mo
Lady Heather is undergoing her periodic trip to the beauty parlor. A few new
gratuitous features have already crept in:
* You can specify a time/date for the program to exit
* The satellite elevation shows if the satellite is rising or setting
* You can show the times in your local time zone
* P
The 1" mounts used for many GPS antennas are available in the UK. They are
common on boats and available from most ships chandler's (price is another
thing). I have a Shakespear adjustable mount and fibreglass extension.
Then there is always *bay.
Robert G8RPI.
--- On Tue, 23/6/09, Dave Baxte
Hi Mark:
I've been told that by plotting the signal strength for each satellite you can
see multipath distortion as oscillations near rise and set.
Is there a way to see a plot of SV signal strength for all 32 satellites?
Since each GPS satellite has the same ground track they would overlay ea
Mark Sims skrev:
Lady Heather is undergoing her periodic trip to the beauty parlor. A few new
gratuitous features have already crept in:
* You can specify a time/date for the program to exit
* The satellite elevation shows if the satellite is rising or setting
* You can show the times in your l
On Tue, 23 Jun 2009 18:08:20 +, Mark Sims wrote:
>Lady Heather is undergoing her periodic trip to the beauty parlor. A few new
>gratuitous features have already crept in:
>* You can specify a time/date for the program to exit
>* The satellite elevation shows if the satellite is rising or se
Magnus wrote:
Mike wrote:
>>> So about the only thing left of interest is histograms of the
>>> jitter. Unfortunately, the 543310A cannot store enough samples to
>>> really make an interesting graph. What I would like to be able to
>>> do is similar to an invention I made for the
Hi John,
I only mentioned it so that someone wouldn't measure 1 inch, and
walk off to Home Depot and ask for 1 inch, only to be in for a big
surprise.
-Chuck Harris
J. Forster wrote:
I just took the antenna to Home Depot and looked through the bins, found
something that fit well, paid, and lef
True. I always take the to be mated part w/ me to avoid repeat trips.
-John
=
> Hi John,
>
> I only mentioned it so that someone wouldn't measure 1 inch, and
> walk off to Home Depot and ask for 1 inch, only to be in for a big
> surprise.
>
> -Chuck Harris
>
> J. Forster wrote:
>> I just
Hello Arnold,
That feature is already in the current release (v 2.0). You can use the 'w'
keyboard command to write the data to a file. You can select either the
complete buffer or just the time span displayed on the screen.
---
normally I do run LH without the log
Hello Arnold,
That feature is already in the current release (v 2.0). You can use the 'w'
keyboard command to write the data to a file. You can select either the
complete buffer or just the time span displayed on the screen.
---
normally I do run LH without the log
Hello Magnus,
The current version (v 2.0) already supports modifying the pll and oscillator
parameters. Use the '&' keyboard command.
_
Lauren found her dream laptop. Find the PC that’s right for you.
http://www.microsoft.com/windo
Hello Mark,
I appreciate LH and your development effort.
I do not log data, but rather I periodically do a screen grab as a
graphics file.
From this saved single screen I would like to know the program info,
version and date.
Granted this data is on a second help screen, but I would prefer i
Magnus wrote:
> I has issues with the big permanent magnet of one of my speakers
> made one of my screens going all strange in colours. I had some
> backsides from a pair of racks which I put inbetween, and the
> steel was doing a good job as finding a better path for th
Are you doing DGPS?
An an alterative to the roll-your-own SDR, tou can build a direct
conversion small receiver or IF converter with a SA602 chip, which
contains a Gilbert cell mixer and a local oscillator.
Here is a board that will do most of what you want, if you're willing to
live with the SA6
Hi Ulrich,
since our FireFly and Fury GPSDO's support GPSCon as well, I tried your
plot program.
We use 115.200 baud by default, but when I set your program to that speed,
it defaults back to 57600 for some reason. Changing our board's baud rate
fixed that problem.
Our status output is
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