On Fri, Feb 29, 2008 at 6:50 PM, Tom Van Baak [EMAIL PROTECTED] wrote:
I'd be interested in reports on how well these work for GPS
antennas, both in terms of lightning protection and in terms
of attenuation, tempco, or phase delay.
Permanent GPS Stations - Surge and Lightning Protection:
On Sat, 01 Mar 2008 10:12:39 +1030
Matthew Smith [EMAIL PROTECTED] wrote:
And this was the reason for my original query - what I don't want is for
anything to get to the computer/LAN. There has been considerable
discussion on the 1-Wire Weather list about equipment getting toasted
due to
On Fri, 29 Feb 2008 16:07:51 -0700 (GMT-07:00)
Richard W. Solomon [EMAIL PROTECTED] wrote:
ICE Electronics also has a line of surge protectors. Unlike others, they
include a resistor to ground to bleed off static build-up. I se these
on all my antennas.
Any semiconductor (TVS diode, Z-Diode)
:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Friday, February 29, 2008 05:21
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] GPS-Attached Equipment Lightning Protection
I'm not using any at the moment, but then all my GPS antennae are indoors
(long story
Hello Alan,
rod. The likelihood of getting any significant voltage on the center
conductor I would think would be very small.
A lightning strike is not your normal static discharge. The magnetic, and
electromagnetic energy released by a strike is humongous. We had to go to 3000W
fast TVS
Lightning simply doesn't behave like you might expect. It's a DC
current, but the rise times and current magnitude gives rise to AC
behaviors. The problem with attractive protection is they have to
carry the full burden of the strike without fail. If it fails, the
current simply moves
bonding the
grounding system for the pool equipment).
Jack
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Matthew Smith
Sent: Thursday, February 28, 2008 3:40 PM
To: Time Nuts List
Subject: [time-nuts] GPS-Attached Equipment Lightning Protection
Hi Folks
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Saturday, March 01, 2008 2:25 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] GPS-Attached Equipment Lightning Protection
Yes, this is the case, but it's easy
-nuts] GPS-Attached Equipment Lightning Protection
Hi Folks
Is anyone implementing any form of lightning protection for their
GPS-attached equipment?
If my antenna gets struck or we have a nearby hit (nearest strike to
ground since we moved here was about 470m away, IIRC), I would like to
limit
At 04:40 PM 2/28/2008, Matthew Smith wrote...
Is anyone implementing any form of lightning protection for their
GPS-attached equipment?
I use an arrestor, something like this:
http://www.alphadeltacom.com/tt3g50.html . That's not the brand I have,
but it's similar.
I have lightning protector that uses those gas tubes. I have yet to hook it
up though... My GPS antenna is mounted on a metal building so I'm probably a
prime candidate for a lightning attractor. The antenna is mounted on a
plastic pole giving a little isolation from the building itself though...
RF gas-based lightning surge protectors are widely available;
look on eBay for items with words like:
Huber Suhner
Polyphaser
EMP surge lightning suppressor protector RGT gas
For example,
http://search.ebay.com/search/search.dll?satitle=Polyphaser+protector
time and frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] GPS-Attached Equipment Lightning Protection
RF gas-based lightning surge protectors are widely available;
look on eBay for items with words like:
Huber Suhner
Polyphaser
EMP surge lightning suppressor protector RGT gas
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Tom Van Baak
Sent: Friday, February 29, 2008 2:50 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS-Attached Equipment Lightning
Hi Tom,
couple of problems with these gas discharge devices: they need a significant
voltage to trip, and usually may only help when the hit is a vicinity hit,
not a direct hit. For direct hits, the goal is to prevent human casualties,
and fires. I don't think any sensitive RF receiver
Quoth randy warner at 2008-03-01 09:51...
...
Remember, the surge protector will do ABSOLUTELY NOTHING to protect the
antenna. Their sole intent is to prevent large surges from getting into your
electronics, house wiring, fingers, toes, etc. The receiver will be toast
most likely, unless the
Hi Matt,
this may not work for you, but the new receivers coming onto the market are
amazingly sensitive.
I get full signal strength inside our wooden house on a Sirf-based receiver
we are evaluating. I also get 8 Sats and more inside a metal building where we
don't even get Cell-phone
Forgot to mention,
I put that diode and inductor inside my HP GPS Distribution amps
retrofitting all of them, it fits quite well. HP uses a similar inductor (but
smaller
current capacity) to feed antenna power into the Antenna, so the effect of
this
is negligible.
But caveat-emptor:
Hi All, all the comment has been about in-line protectors so far. We in the
UK do dot have the ferocity of lightning that is seen in some parts of the
USA but surely like all problems prevention is better. It is probably not
100% but would it not be better to have a higher metal rod say 6 feet
Hi Folks
Is anyone implementing any form of lightning protection for their
GPS-attached equipment?
If my antenna gets struck or we have a nearby hit (nearest strike to
ground since we moved here was about 470m away, IIRC), I would like to
limit the damage to the GPS module.
My thought was to
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