Sometimes the cone of protection simply does not exist. A couple of weeks
ago I had to respons to one of my sites which contains an 800 foot tower.
While there a large storm cell developed and a severe thunderstorm ensued.
Shortly before leaving lighting hit the tower which was unnerving
Hi Greg,
As I recall hearing it, the cone of protection is really just an
area where the probability of a strike is much reduced. The cone
of protection extends half as far as the lightning rod is high.
If your rod was 800 feet high, the protection cone would extend
400 feet from the base of
On Mon, Jun 11, 2012 at 10:31 PM, Hal Murray hmur...@megapathdsl.net wrote:
albertson.ch...@gmail.com said:
But you know what? If you simply place an automotive puck type GPS
antenna on your roof you have to do the same thing. It must be grounded the
same way, same lightening protection and
On 6/11/12 10:31 PM, Hal Murray wrote:
albertson.ch...@gmail.com said:
But you know what? If you simply place an automotive puck type GPS
antenna on your roof you have to do the same thing. It must be grounded the
same way, same lightening protection and so on. So in the end you may as
Hi gang
Just to upset the apple cart a bit, high trees do not necessarily
protect a large area from lightning.
In my past life as a range officer at a large shooting facility, we were
hit by lightning directly in front of the firing line during a storm.
The tree line was about 20 to 30 ft
Hi
I was concerned about the appearance before I did the first one. After putting
several up, they all look pretty good. The mast portion looks straight from the
ground and it's actually smaller than any conventional mast. The black paint
does indeed help out a little in hiding the tee it's
10/06/2012 22:26
My Thunderbolt, PSU and antenna should arrive this week. I would like
to put out it outside my shack, which is an upstairs room in a bungalow.
Outside of the plasterboard walls of my room is a big empty roof space. Can
I put the TB in there, with it's PSU and feed the
On Mon, Jun 11, 2012 at 3:28 AM, Bob Camp li...@rtty.us wrote:
Hi
I was concerned about the appearance before I did the first one. After
putting several up, they all look pretty good. The mast portion looks
straight from the ground and it's actually smaller than any conventional
mast. The
; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt cabling questions
10/06/2012 22:26
My Thunderbolt, PSU and antenna should arrive this week. I would like
to put out it outside my shack, which is an upstairs room in a bungalow.
Outside
In a message dated 6/11/2012 11:52:00 A.M. Eastern Daylight Time,
albertson.ch...@gmail.com writes:
On Mon, Jun 11, 2012 at 3:28 AM, Bob Camp li...@rtty.us wrote:
Hi
I was concerned about the appearance before I did the first one. After
putting several up, they all look pretty good.
I know I repeat my self. I have done so far four sewer vents using a 4 way
PVC splitter, sanding the side stubs down and glue a white GPS antenna
flush on the top. 4 way so air comes in or out on the sidesRun the coax down
the inside of the pipe, fish it out at the best location, seal the
albertson.ch...@gmail.com said:
But you know what? If you simply place an automotive puck type GPS
antenna on your roof you have to do the same thing. It must be grounded the
same way, same lightening protection and so on. So in the end you may as
well put up a professional looking and
10/06/2012 22:26
My Thunderbolt, PSU and antenna should arrive this week. I would like
to put out it outside my shack, which is an upstairs room in a bungalow.
Outside of the plasterboard walls of my room is a big empty roof space. Can
I put the TB in there, with it's PSU and feed the antenna
Chris,
You would be better off having the T'boldt inside and just run more coax cable
to
the antenna. The T'boldt is not weather protected in any way, so having it
exposed to the elements is definitely not a good idea. As for the outside
location, you want as much South facing clear view that
I did about the same thing, added some long some long cables but did it
differently. You can better performance if the T-bolt is in a space where
the temperature is controlled. ANY place is better than an attic which has
hot in the day and cold at night. My T-bolt is on the top shelf of a
Hi Chris,
Even if this is the datasheet of a later version, it gives an overall
picture of what you ask about.
http://trl.trimble.com/docushare/dsweb/Get/Document-383329/022542-010B_Thunderbolt-E_DS_0807.pdf
The Tbolt perform (even) better with stable temperature surroundings. 3m
of antenna
Hi
Get a chunk of RG-6 quad shield satellite TV coax from your local big box
store. If the TBolt is 50' away from the antenna that's fine. Unless you have a
very unusual home, you should be able to hit the antenna with 50' of cable. As
others have said, you want the TBolt in a well controlled
On Sun, Jun 10, 2012 at 2:50 PM, b...@lysator.liu.se wrote:
... 3m
of antenna cable is no problem. Antenna position is more important than
the exact type of antenna. I'd rather have a decent antenna at a very good
site, than a very good antenna at a slightly worse antenna site
3M is
On Sun, Jun 10, 2012 at 2:50 PM, b...@lysator.liu.se wrote:
... 3m
of antenna cable is no problem. Antenna position is more important than
the exact type of antenna. I'd rather have a decent antenna at a very
good
site, than a very good antenna at a slightly worse antenna site
3M is
On 6/10/12 4:24 PM, Chris Albertson wrote:
On Sun, Jun 10, 2012 at 2:50 PM,b...@lysator.liu.se wrote:
... 3m
of antenna cable is no problem. Antenna position is more important than
the exact type of antenna. I'd rather have a decent antenna at a very good
site, than a very good antenna at a
On Jun 10, 2012, at 7:43 PM, Jim Lux wrote:
On 6/10/12 4:24 PM, Chris Albertson wrote:
On Sun, Jun 10, 2012 at 2:50 PM,b...@lysator.liu.se wrote:
... 3m
of antenna cable is no problem. Antenna position is more important than
the exact type of antenna. I'd rather have a decent antenna at
Hi
Sorry for the blank…
The easy way to mount the antenna:
Head over to Home Depot and get a 1 Tee, a 1 flange, a 1 nipple, a 12 to
18 1 pipe, and a 6 long 1 pipe.
The antenna goes on top of the 18 pipe. That screws into the tee. The bottom
of the Tee gets the 6 pipe. Coax runs straight
On Sun, Jun 10, 2012 at 4:43 PM, Jim Lux jim...@earthlink.net wrote:
HOWEVER, your scheme is going to be tricky to pass muster with the
National Electrical Code. Two aspects need attention:
You need to have a ground wire from the mast to the ground point
and
You need to have some form of
I did that once and thought the bends in the pipe looked ugly. I wanted a
simple vertical mast. The simple mast is also stronger because I can use
U bolts to secure it to a rafter and a floor joist that are about four
feet apart. Results in the very strong installation. It is build exactly
Totally agree
On Jun 10, 2012, at 19:34, Chris Albertson albertson.ch...@gmail.com wrote:
On Sun, Jun 10, 2012 at 4:43 PM, Jim Lux jim...@earthlink.net wrote:
HOWEVER, your scheme is going to be tricky to pass muster with the
National Electrical Code. Two aspects need attention:
You
25 matches
Mail list logo
