A very well known little factoid, but we aren't doing chemistry here, we
are
cleaning electronics. Specifically a silly little rubber connector.
And for that and optics, I often use ether, AKA engine starting fluid,
and, for metals, Carburetor and Brake cleaner, but that eats paint,
rubber,
Well,
That 1% is plain H2O (water).
BillWB6BNQ
gary wrote:
I do have some of the junk isopropyl handy. I use for cleaning auto
parts and the camp stove. It says isopropyl alcohol anhydrous usp
not
less than 99%. No indication what the other 1% is.
gary wrote:
OK. as they say, your mileage may vary. I just buy the real thing. It's
cheap enough and works great. The price is still $7 for 32 oz at Frys.
99% is about $2-3 for 32 oz at Safeway. Frys is a surplus house, that is
very regional. There is no equivalent throughout most of the US.
El 04/01/2011 16:23, Chuck Harris escribió:
[You possibly weren't aware, but denaturing is done 100% for the tax man.
The tax man is happy to let you have your ethanol free of the sin tax,
as long as some poison is added that will kill or maim you, if you drink
it.]
It is really nice - if you
I've been cleaning camera lenses, precision optics, and connectors for
twenty years with a single bottle of Everclear, the old standby of frat
house parties. I've no idea how much water it has accumulated over the
years but it was 151 proof to begin with so it had plenty when I opened the
bottle.
Javier Herrero wrote:
I usually buy it from Farnell, in 1-litre can and in aerosol form, made
by Electrolube. Here is the data sheet
http://www.farnell.com/datasheets/316731.pdf
It claims 99.7% purity, 0.15% max water content (I suspect that the can
quickly exceeds that content once opened...)
El 04/01/2011 17:30, Chuck Harris escribió:
In my experience, the can would be a slight problem. As long as the
alcohol remains anhydrous, the tin plating in the can shouldn't be
touched,
but as soon as the water moves in, some tin will go into solution. That
tin will be left behind when
Active Electronics is another source of 99.9% pure isopropanol, and
they have walk-in stores in a bunch of major US and Canadian cities.
I use it for most electronics cleaning, but it also cleans optics
without leaving a residue (unless there's a lot of junk on the surface
to dissolve and
No details on how the extra Japanese satellite is making it possible
to get this accuracy.
http://www.crunchgear.com/2011/01/04/new-gps-system-boosts-accuracy-to-3cm/
Joe Gray
W5JG
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In message aanlktimgaakx-ojheupbmtsfrfh8qlrsvm5sdqxss...@mail.gmail.com, Jose
ph Gray writes:
No details on how the extra Japanese satellite is making it possible
to get this accuracy.
http://www.crunchgear.com/2011/01/04/new-gps-system-boosts-accuracy-to-3cm/
As far as I know, it is a
In message 37403.1294167...@critter.freebsd.dk, Poul-Henning Kamp writes:
In message aanlktimgaakx-ojheupbmtsfrfh8qlrsvm5sdqxss...@mail.gmail.com, Jose
ph Gray writes:
No details on how the extra Japanese satellite is making it possible
to get this accuracy.
http://www.gpsworld.com/gnss-system/augmentation-assistance/news/michibiki-begins-transmitting-positioning-signals-10675
Similar in concept to waas or tass, the satellite provides a nav signal and
differential corrections.
One of the goals is to make a nav system that performs well (sub meter)
I want to get light from a wide angle (30 degrees or so) into a multimode
fiber cable to feed a fast MF466 photodiode for short distance sensing. That
fiber is really small to focus on. Anyone done this...looking at a reflection
of a red laser diode flashing dot a couple of meters away
Denatured alcohol is available at Home Depot in the States and most hardware
stores.
Also, what you say about the 50/50 mix of isopro and water is exactly why I
tend to reach for the 70% stuff first. It dissolves the bulk of the gunk
including the stuff not soluble in alcohol but that is soluble
Negative lens and microscope objwective.
-John
===
I want to get light from a wide angle (30 degrees or so) into a multimode
fiber cable to feed a fast MF466 photodiode for short distance sensing.
That fiber is really small to focus on. Anyone done this...looking at a
I want to get light from a wide angle (30 degrees or so) into a multimode
fiber cable to feed a fast MF466 photodiode for short distance sensing.
That fiber is really small to focus on. Anyone done this...looking at a
reflection of a red laser diode flashing dot a couple of meters away
[From a couple of weeks ago...]
Opto-isolater? Why not just use fiber cable between cards.
I have only ever seen point-to-point versions, I needed 7 cards connected.
You can make a multi-drop setup with 2n unidirectional optical links. The
trick is to send all the links to a common node
Hi Joe:
I think it's the L1C signal, see:
http://www.prc68.com/I/DAGR.shtml#GPSs
I remember reading that they want your cell phone to guide you to a
shop's front door in a multistory building. There will be ceiling
mounted pseudo satellites using the same L1C signal to make that work.
Have
jim...@earthlink.net said:
Similar in concept to waas or tass, the satellite provides a nav signal and
differential corrections.
One of the goals is to make a nav system that performs well (sub meter) in
urban canyons, which conventional gps does not
I thought the idea with waas was to
Hello!
Wanted are:
-IEEE-488 Interface Board (Austron P/N 10398250)
-Cable (Austron P/N 12098095)
Thanks in advance
Antonio
CT1TE
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On Tue, Jan 4, 2011 at 12:53 PM, Hal Murray hmur...@megapathdsl.net wrote:
jim...@earthlink.net said:
Similar in concept to waas or tass, the satellite provides a nav signal and
differential corrections.
One of the goals is to make a nav system that performs well (sub meter) in
urban
On 1/4/11 12:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Similar in concept to waas or tass, the satellite provides a nav signal and
differential corrections.
One of the goals is to make a nav system that performs well (sub meter) in
urban canyons, which conventional gps does not
On 1/4/11 12:53 PM, Hal Murray wrote:
jim...@earthlink.net said:
Similar in concept to waas or tass, the satellite provides a nav signal and
differential corrections.
One of the goals is to make a nav system that performs well (sub meter) in
urban canyons, which conventional gps does not
Luciano Paramithiotti's January 1 post about his 10-to-100 MHz multiplier
project reminded me of past musings about using two 10GHz, phase-locked
oscillators to compare the 10MHz outputs of my T-bolt and LPRO so I could
quickly adjust the latter by observing the mixed 10 GHz signals with a
I have found 91% at CVS Pharmacy and 99% from the electronics suppliers.
Where in a grocery store or drug store can I find 99%?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Javier Herrero
Sent: Tuesday, January 04, 2011 9:51 AM
Bruce-
I can speak to the Freq West PLOs. They, like the others, use a
sampling phase detector. In theory you could use any subharmonic of
the actual L-band VCO frequecy to get the loop to lock. I have used
freqs as low as 5MHz. But there are limitations. You must couple the
signal
Ah, that explains it. Nothing like being able to market and sell
something to more people for an incentive :-)
Joe Gray
W5JG
On Tue, Jan 4, 2011 at 1:30 PM, Brooke Clarke bro...@pacific.net wrote:
Hi Joe:
I think it's the L1C signal, see:
http://www.prc68.com/I/DAGR.shtml#GPSs
I remember
I was just impressed with the claimed accuracy for a civilian product.
Especially without having to do post processing.
Joe Gray
W5JG
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brucekar...@aol.com wrote:
Luciano Paramithiotti's January 1 post about his 10-to-100 MHz multiplier
project reminded me of past musings about using two 10GHz, phase-locked
oscillators to compare the 10MHz outputs of my T-bolt and LPRO so I could
quickly adjust the latter by observing the
I got my last few 99% pints at Meijer here in Michigan.
Bob L.
From: J. L. Trantham jlt...@att.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Tue, January 4, 2011 6:54:43 PM
Subject: Re: [time-nuts] LCD display connector
An ebay seller, as typical says I don't know if this even powers up
but the photo shows all dashes across the display. Is there any way
an HP 5334A can get to an all dash display without passing the self
test? Seems from my reading of the manual it will either be (1) dead
(no lights on) or (2)
Hi,
I am a newby here. I am looking for any information regarding the Telechron D
Master clock and how it connects to the A Master for its reference.
I have both a D and A Mater and I would like to get them working together.
Thanks, Pete
___
On 01/05/2011 01:47 AM, Chris Albertson wrote:
An ebay seller, as typical says I don't know if this even powers up
but the photo shows all dashes across the display. Is there any way
an HP 5334A can get to an all dash display without passing the self
test? Seems from my reading of the manual
Drug store?
Not a name I recognize here in FL.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Robert LaJeunesse
Sent: Tuesday, January 04, 2011 6:24 PM
To: Discussion of precise time and frequency measurement
Subject: Re:
Folks,
Well I had some 70% isopropyl alcohol swabs and so used them.
No matter what I did there are still some segments not working. Checked the
contacts on the pcb with a cro and all seemed to have some sort of signal on
them. Tried rotating and flipping the zebra strip and always the same
On 01/04/2011 07:39 PM, Joseph Gray wrote:
No details on how the extra Japanese satellite is making it possible
to get this accuracy.
http://www.crunchgear.com/2011/01/04/new-gps-system-boosts-accuracy-to-3cm/
This is the first bird for the QZSS system. The Quasi-Zenith orbit
creates a
Joseph Gray wrote:
If I am using the NMEA data (as in the Garmin is the only time
source), what firmware is recommended by all those using a GPS18x-LVC?
I thought I would run some tests for you Joe, using Version 3.0 and 3.2
Although I myself have run version 3.0 for a number of months (when
The orb in the sky made an appearance today, so I figured I'd photograph
the guts of the Starloc II. The HAG-240 is an active antenna a local
surplus shop was selling. Since it worked with the box, I went back and
wiped them out. $15 each, plus $2 for the threaded pipe to mount it.
Geoff,
Thanks a lot for comparing firmwares. That hard information helps tremendously.
Joe Gray
W5JG
On Tue, Jan 4, 2011 at 8:46 PM, Kiwi Geoff geof...@gmail.com wrote:
Joseph Gray wrote:
If I am using the NMEA data (as in the Garmin is the only time
source), what firmware is recommended by
From an ordinary drug store in Vancouver BC, my wife found Isopropyl
Alcohol 99% USP, described as Topical antiseptic and anti-bacterial
agent. The manufacturer is Pure Standard Products. She says it
was just sitting on the shelf at this drug store.
If you can't find it at yours, try asking the
I agree, very helpful, thanks Joseph!
I recently got two 18x that I upgraded to 3.50. (I'm starting to work on
integrating some M12+T modules to supplement/replace the 18x's).
Has anyone had trouble with reverting firmware upgrades on Garmin products?
Of course, feedback on going back from 3.50
I get my 99% from Safeway. They keep it in the area with all of the other
lotions, cold remedies, peroxide, witchhazel, and other grades of isopropyl
alcohol.
-Chuck Harris
J. L. Trantham wrote:
I have found 91% at CVS Pharmacy and 99% from the electronics suppliers.
Where in a grocery store
The one possible problem is a blown front end. This will not fail the self
test. Check the sellers completed listings and feedback to see what esle they
have sold. If they are playing dumb on this one, but knowedgeable about other
tech stuff you may have a problem. Personally I find a faulty
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