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
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?
-
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
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
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
: Re: [time-nuts] TNC connectors
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
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
Message: 3
Date: Tue, 23 Jun 2009 07:54:02 -0400
From: Chuck Harris cfhar...@erols.com
Subject: Re: [time-nuts] TNC connectors
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Message-ID: 4a40c25a.7080...@erols.com
Content-Type: text/plain; charset=ISO-8859
[mailto:time-nuts-boun...@febo.com] On
Behalf Of Dave Baxter
Sent: 23 June 2009 13:40
To: time-nuts@febo.com
Subject: Re: [time-nuts] TNC connectors
Message: 3
Date: Tue, 23 Jun 2009 07:54:02 -0400
From: Chuck Harris cfhar...@erols.com
Subject: Re: [time-nuts] TNC connectors
To: Discussion
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
@febo.com
Subject: Re: [time-nuts] TNC connectors
Message: 3
Date: Tue, 23 Jun 2009 07:54:02 -0400
From: Chuck Harris cfhar...@erols.com
Subject: Re: [time-nuts] TNC connectors
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Message-ID: 4a40c25a.7080
[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?)
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, or
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
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
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 took the
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