Re: [time-nuts] GPS-Attached Equipment Lightning Protection

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

[time-nuts] GPS Antenna Cable Splicing

Hi Folks I'm not so hot on RF stuff (actually not so hot on anything above 50/60Hz - only studied power stuff) so thought I should ask: I have a few GPS antennae here, all with 5m (15ft-ish) cables on them. For me, that won't get the antenna anywhere near the highest ridgeline of the house.

[time-nuts] simple GPS nmea display.

Hi, Long time ago I had a simple software (win 95/98) that displayed GPS sats position ax/el and strength etc from the nmea info. I can't find it or remember its name and nowadays searching google with anything containing GPS gets tones of stuff... garbage in this perspective... Can anyone point

Re: [time-nuts] GPS Antenna Cable Splicing

Matthew Smith wrote: Hi Folks I'm not so hot on RF stuff (actually not so hot on anything above 50/60Hz - only studied power stuff) so thought I should ask: I have a few GPS antennae here, all with 5m (15ft-ish) cables on them. For me, that won't get the antenna anywhere near the highest

Re: [time-nuts] GPS Antenna Cable Splicing

First; how long does the total length need to be? With lower loss cables, 10m is no problem. Second; if you go to the trouble of adding a length of cable, it would be best if you replace as much of the 5m cable as possible with lower loss cable rather than just adding to the 5m cable. John

Re: [time-nuts] simple GPS nmea display.

Was it VisualGPS?? www.visualgps.net 73, Mike, N1JEZ A closed mouth gathers no feet - Original Message - From: Luis Cupido [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, March 01, 2008 8:21 AM Subject: [time-nuts] simple

[time-nuts] Simple NMEA Display

From: Luis Cupido [EMAIL PROTECTED] Can anyone point me to any simple program, must run on older machines (windows 98) be and free. I mean very basic stuff for sanity checks of system antena etc. -- Very basic, Very Simple and very Free.. Use the hyperterminal program that

Re: [time-nuts] GPS-Attached Equipment Lightning Protection

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

Re: [time-nuts] GPS-Attached Equipment Lightning Protection

I found a site that has some great links on grounding. http://www.n0hr.com/hamradio/152/10/ham_radio0.htm the link to Choices and consequences of station lightning protection http://members.cox.net/pc-usa/station/ground0.htm is most excellent. I have implemented this (right down to common

Re: [time-nuts] GPS-Attached Equipment Lightning Protection

-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 to

Re: [time-nuts] Simple NMEA Display

Hi Tom, That I know ;-) I meant something more visual :-) Tks anyway. Luis Cupido. ct1dmk. Tom Clifton wrote: From: Luis Cupido [EMAIL PROTECTED] Can anyone point me to any simple program, must run on older machines (windows 98) be and free. I mean very basic stuff for sanity checks of

Re: [time-nuts] simple GPS nmea display.

Tks, Mike, It was something very similar Will try that one tks. Luis Cupido. ct1dmk. [EMAIL PROTECTED] wrote: Was it VisualGPS?? www.visualgps.net 73, Mike, N1JEZ A closed mouth gathers no feet - Original Message - From: Luis Cupido [EMAIL PROTECTED] To: Discussion of

Re: [time-nuts] simple GPS nmea display.

Tested, It works great. tks. lc ct1dmk. [EMAIL PROTECTED] wrote: Was it VisualGPS?? www.visualgps.net 73, Mike, N1JEZ A closed mouth gathers no feet - Original Message - From: Luis Cupido [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement

[time-nuts] Timing Measurements

Hi All This might be old news but I just came across this link to a Symmetricom presentation on timing measurements and thought it interesting _www.iee.org/OnComms/PN/communications/www.iee.org/OnComms/PN/com_ (http://www.iee.org/OnComms/PN/communications/005%20-%20Lee%20Cosart.pdf)

Re: [time-nuts] Simple NMEA Display

Luis, The one I have been using for years is Visual GPS. This program has a very nice graphical interface, and if you look at some of the other programs out there supplied by vendors for their GPS boards, you will see that they are almost always derived from Visual GPS. Those of you out there

Re: [time-nuts] GPS Antenna Cable Splicing

Date: Sat, 01 Mar 2008 19:52:03 +1030 From: Matthew Smith [EMAIL PROTECTED] Subject: [time-nuts] GPS Antenna Cable Splicing To: Time Nuts List time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=UTF-8 1) Can I actually extend the cables, or is 5m as far as I

Re: [time-nuts] GPS Antenna Cable Splicing

Quoth Bruce Griffiths at 2008-03-01 23:55... GPS distribution amplifiers are readily available, they appear from time to time on ebay. Symmetricom 58537 4 port active smart splitters can be quite useful. HP/Agilent/Symmetricom 58537A, 58536A are also useful. Think I'll investigate these -

[time-nuts] Trimble 36576-A GPS Module

Hi Does anyone have one of these or is able to identify it? This module looks very much like an ACE unit and indeed the eBay vendor's link to documentation is to an ACE II. However, the ACE units have a 90 degree SMA antenna connector whereas this unit has a vertical, unthreaded connector

Re: [time-nuts] Trimble 36576-A GPS Module

Matthew Smith wrote: Hi Does anyone have one of these or is able to identify it? This module looks very much like an ACE unit and indeed the eBay vendor's link to documentation is to an ACE II. However, the ACE units have a 90 degree SMA antenna connector whereas this unit has a vertical,

Re: [time-nuts] Trimble 36576-A GPS Module

Quoth Bruce Griffiths at 2008-03-02 11:05... Mathew Some pictures of the connectors in question would be useful. Bruce Good thinking! The grid on my notebook is 5mm x 5mm, for those shots where the ruler is out of the picture. Overview - module with flylead

Re: [time-nuts] Trimble 36576-A GPS Module

On Sat, Mar 1, 2008 at 5:05 PM, Matthew Smith [EMAIL PROTECTED] wrote: Good thinking! The grid on my notebook is 5mm x 5mm, for those shots where the ruler is out of the picture. Looks like MCX. I have connectors matching that description and general look on my Oncore UT+, and I used a

Re: [time-nuts] Trimble 36576-A GPS Module

Matthew Smith wrote: Quoth Bruce Griffiths at 2008-03-02 11:05... Mathew Some pictures of the connectors in question would be useful. Bruce Good thinking! The grid on my notebook is 5mm x 5mm, for those shots where the ruler is out of the picture. Overview - module with

Re: [time-nuts] Trimble 36576-A GPS Module

Quoth Matthew Smith at 2008-03-02 11:35... Overview - module with flylead http://www.smiffysplace.com/files/trimble_36576-a_1.jpg I should mention that the two ends of the flylead both have a pin in the centre of the connector and are of differing sizes. The socket on the antenna lead (not

Re: [time-nuts] Trimble 36576-A GPS Module

On Sat, Mar 1, 2008 at 5:16 PM, Matthew Smith [EMAIL PROTECTED] wrote: The socket on the antenna lead (not shown) has cuts around the edge for the flylead connector to snap in, the socket on the board is solid. The snap cuts are on the plug. SMB, sometimes known as OCX -- GDB has a

Re: [time-nuts] Trimble 36576-A GPS Module

Quoth Chris Kuethe at 2008-03-02 11:40... Looks like MCX. I have connectors matching that description and general look on my Oncore UT+, and I used a Garmin MCX-terminated antenna. That's that one confirmed, thanks. Just fished out the antenna for my Oncore modules and yes, it fits into the

Re: [time-nuts] Trimble 36576-A GPS Module

Quoth Chris Kuethe at 2008-03-02 11:49... SMB, sometimes known as OCX Excellent! Thanks guys. Cheers M -- Matthew Smith Smiffytech - Technology Consulting Web Application Development Business: http://www.smiffytech.com/ Personal: http://www.smiffysplace.com/ LinkedIn:

Re: [time-nuts] Trimble 36576-A GPS Module

On Sat, Mar 1, 2008 at 5:22 PM, Matthew Smith [EMAIL PROTECTED] wrote: Excellent! Thanks guys. Fans of Neal Stephenson (in particular Snow Crash) may consider this as an example of condensing fact from the vapor of nuance. -- GDB has a 'break' feature; why doesn't it have 'fix' too?