I'll second that. I had a sailboat a while back with about 1/2 dozen NMEA
devices off all kinds (GPS, Water speed sensors, Wd speed and direction,
magnetic compass and so on). All feeding the nav system. NMEA was
designed for marine navigation networks.
Th spec is really poor for timing in
We hold this even every year to clear out accumulated parts and gear, this year
there will be about 2 tons of stuff,
mainly Tek, HP, Fluke, Boonton test gear items, plus all the remaining Time Code
rack units from Trak, Kode, etc.,
including two huge 4 foot time displays. Perfect for that cape
On 3/03/2015 4:33 AM, Didier Juges wrote:
Tim,
NMEA is normally used for navigation. It would seem unlikely that anyone would
want to use a Thunderbolt for navigation. Can you elaborate on what you are
trying yo do?
Hi Didier,
I' building a multi frequency beacon based on QRP-labs U3
Hi,
Can anyone tell me if there is a particular method for removing the
oven from the flask in a FTS 1200 or 1000A - it seems pretty well
wedged in there.
Thanks,
Angus.
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What NMEA sentences does this device accept? It would not be hard to make
a small uP device like say an Arduino that would output those NMEA
sentences using data it gets from the TB.The data rate is very slow so
even the smallest uP would work. None of this NMEA stuff is very time
critical
On 3/1/2015 3:10 PM, Ben Hall asked:
Using a zero-crossing detector with the picPET and logging the timing of
each zero-crossing, how do you toss out the other 59 samples each second?
I think I figured out a very obvious way.
~60 Hz AC -- zero crossing detector -- divide by 64 ripple counter
Often these parts can be replaced with MSI TTL counter/decoder/logic chips
with just a slight change in wiring.
I don't know if the SD102 is the Nixie driver, but there are substitutes
for Nixie drivers too.
I don't know exactly what the SD102 does, but if your friend has the
Monsanto 110B
I'm going to have to build one of these. Assume you have some sort of
circuit that converts low-voltage AC from a transformer secondary to a
pulse train, start a timer, and count x amount of pulses?
Hi Ben,
Any microcontroller will allow you to poll for or capture events. Many even
have
On 3/1/15 10:23 AM, Joseph Gwinn wrote:
time-nuts Digest, Vol 128, Issue 1, Message: 8
Date: Sat, 28 Feb 2015 17:46:18 -0800
From: Jim Lux jim...@earthlink.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: [time-nuts] simple explanation of noise
Hello Folks!
Noted the discussion about the XL-DC GPS receivers. I have two complete
chassis here with exception that the Rubidiums have been removed. Does anyone
need parts, etc.? I would be happy to work something out for one or both
if someone wants these. Physically good shape, but
Tim,
NMEA is normally used for navigation. It would seem unlikely that anyone would
want to use a Thunderbolt for navigation. Can you elaborate on what you are
trying yo do?
Didier KO4BB
On February 25, 2015 10:11:08 PM CST, Tim t...@skybase.net wrote:
Hi all,
Is there a way to get NMEA
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