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.
I'm not going to clean expensive optics with the drug store stuff. But
feel free to use the drugstore stuff on your own gear if you want.
I have this
gary wrote:
They mix in stuff like wintergreen oil. The FDA doesn't have an issue
with so-called inert ingredients. Inert for use on the body, not inert
in electronics or optics. Most prescription drugs are full of inert
materials. They don't have to be listed.
Actually, they do have to be on t
They mix in stuff like wintergreen oil. The FDA doesn't have an issue
with so-called inert ingredients. Inert for use on the body, not inert
in electronics or optics. Most prescription drugs are full of inert
materials. They don't have to be listed.
Generally you need reagent grade to get some
Actually, no, it doesn't. The FDA would require them to call it something else,
and the extra ingredients would have to be on the label. If they call it
isopropyl
alcohol, it contains alcohol, and water in various percentages.
Isopropyl is readily available in 70%, 91%, and 99%. I would recom
Ethanol is drinking alcohol, so most states require a permit to buy it.
The stuff Frys sells is Puretronics technical grade isopropyl. The claim is
99.9% ultra pure anhydrous alcohol. $7 for 32oz when I bought it about 2 years
ago. I use it for defluxing. I also use it on optical filters too.
Eric Williams wrote:
I knew someone who worked with 100% isopropanol who said there was some
safety issue with using it in that, if it ignited, the flame was virtually
invisible.
same is true of most alcohols. Methanol and Ethanol burn colorless (a
problem for race cars in accidents)
_
I knew someone who worked with 100% isopropanol who said there was some
safety issue with using it in that, if it ignited, the flame was virtually
invisible.
On Mon, Jan 3, 2011 at 4:21 PM, jimlux wrote:
> li...@lazygranch.com wrote:
>
>> Most drug store isopropal contain other chemicals to keep
li...@lazygranch.com wrote:
Most drug store isopropal contain other chemicals to keep your skin from drying out. You can buy electronics grade isopropal. Cheap enough ($5 for a large bottle) if you have a store that stocks it. Fry's Electronics has it.
Of course grain alcohol will do the job.
Most drug store isopropal contain other chemicals to keep your skin from drying
out. You can buy electronics grade isopropal. Cheap enough ($5 for a large
bottle) if you have a store that stocks it. Fry's Electronics has it.
Of course grain alcohol will do the job.
-Original Message
I've used isopropanol for cleaning the display connectors and the
elastomer strip with sucess (last time for a Becker Mexico car radio...)
El 03/01/2011 23:55, Jim Palfreyman escribió:
Hi All,
The item is indeed the "zebra strip".
Alignment is pretty good (I think) as the case ensures it.
So
Hi All,
The item is indeed the "zebra strip".
Alignment is pretty good (I think) as the case ensures it.
So it sounds like it might need a clean. I shall look into that one...
Postscript... Just searched the world for DeoxIT and it turns out the local
Australian supplier has a shop 50m from whe
On Jan 3, 2011, at 1:00 PM, Burt I. Weiner wrote:
> I'm not sure of the nature of the two receivers, but using conventional
> receiver design thinking, the only thing that comes to mind that might be
> radiating would be the oscillators or possibly the I.F. section taling to
> each other.
My c
Bill,
The system in question is being used for navigation, but a little
more than your typical find a restaurant type of navigation
system. The symptoms are that they will lock on birds erratically,
maybe for a few seconds at a time As I may have mentioned in an
earlier post, for my frequenc
Hi Antonio,
The wheel that flicks the chopper bar seems to be a press fit.
The shaft is knurled (ridges have been formed) and the brass insert
in the wheel is pressed over the knurled shaft.
As the other end of the shaft protrudes from the gearbox it is simple to
press the wheel on, but very diffi
Would depend on the antennae gain maybe.
Simple patch antennae shouldn't have a problem working close together. We
were installing Matsushita ones with about 35db gain.
Most certainly a problem with some of the older types with down-converters
built in.
Rob K
-Original Message-
From: t
Also good idea when considering lightning protection issues
Rob K
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of shali...@gmail.com
Sent: 03 January 2011 7:50 PM
To: Time-Nuts
Subject: Re: [time-nuts] GPS Antenna -Receiver Mutual I
OK, I confess, I'm a serial addict.
GM detectors and counters, Ionisation chambers, Gas propotional, Alpha (ZnS)
scintillators, Gamma scintillators (NaI(Tl), BGO, Plastic), Beta scintillators
(plastic, liquid) Solid state detectors (Alpha, Beta & Gamma), Single and multi
channel analysers. Plus
Well, I have two HP conical antennas 4 feet apart and just
below the roof level, with an elevation cutoff of 30 degrees
for the large and growing oak trees on 3 sides. Fifty feet
of RG-8 each connects to two Z3801A receivers.
I've had no trouble in a dozen years, here in Minneapolis.
T1 to GPS run
Yes and MultiChannel Analyzers too. Not to mention NIM and CAMAC.
-John
=
> Ahem. Some of us collect *scintillation counters*. [?]
>
> Anybody have a working cesium fountain?
>
>
>
>
> On Mon, Jan 3, 2011 at 2:08 PM, Robert Atkinson
> wrote:
>
>> Hi Antonio,
>> Time nut, radio
The situation I was in at the time I experienced this was while
making radio station signal strength measurements from an associate's
vehicle. We were using my laptop with Delorme's Topo USA 7.0 runign
Quad maps and at the same time running a Garmin GPS128 system to
confirm bearing and distanc
Hi,
There are (at least) two types of connector. Some displays use both types.
First is "Zebra-strip" which is an elastomer sandwich of conducting/insulating
material that conducts vertically but not horizontally. These rely on
mechanical clamping and are what Gary is referring to. The other is
I have had mixed success (I am being generous) getting these kinds of displays
working properly after being disassembled. The trick is to align the display
itself with the traces on the PWB. The elastomeric connection is a funny thing
that conducts electricity in only one direction, so its align
Ahem. Some of us collect *scintillation counters*. [?]
Anybody have a working cesium fountain?
On Mon, Jan 3, 2011 at 2:08 PM, Robert Atkinson wrote:
> Hi Antonio,
> Time nut, radio amateur and Hp owner eh! If you collect geiger counters
> we'll have 4 out of 4 .
> Robert G8RPI.
>
> --- On
You need to clean the elastomer. I've done this with Caig deoxit, though
I would search their website to see if they have a special product for
the task.
http://store.caig.com/
Generally the LCD is just pressed against the elastomer, so you may need
to see that the pressure is sufficient.
O
Does anyone have a surplus Oscillator Support Board for the 5334A Option 010
counter? The part number is 05334A-60003. Nothing even close shows up on
Ebay nor in a Google search.
I'd like to get 2 or 3 if any are available.
I guess I could homebrew it as a last resort, but I'd rather have the
Apologies for being a teensy tiny bit OT. But is relevant on the whole.
I have a remote control for an air conditioner whos display is only
partially working.
Upon internal inspection it seems the sticky thingy (technical term)
connecting the LCD display to the board is not attached properly.
An
Here you can find a project of the Multiplier:
http://www.timeok.it/files/10_to_100_mhz_multiplier.pdf
Luciano P. S. Paramithiotti
Luciano,
That's a good looking project, and pretty good results for a homebrew
multiplier. Would you have a picture of the bottom of the board that you
coul
The additional advantage is to give you diversity and some immunity against
multipath (at least it reduces the probability that both receivers will be
affected at the same time due to weird constellation issues or local
interference).
But it now creates an issue which is how do you know who is
I particularly like the Box Enclosures brand extruded aluminum boxes. The
series 2 and series 3 enclosures take 100mm wide Eurocard boards perfectly.
They are very easy to machine if you want D holes for BNC connectors, etc.
They're also extremely high quality and cheap! Newark sells them and I
Hammond also make aluminum boxes from extrusions. These have parallel
walls and there are slots for mounting PCBs. I don't think we need to
select a "standard" box. only a "standard PCB siz. If you pick 100mm
x 160mm that is a standard eurocard size and there are many boxes that
hold 100 x 160m
While you can try and run multiple GPS receivers off a single antenna using an
off the shelf mini-circuits splitter, a bias tee, and a handful of dc blocks,
you're likely to run into just this kind of problem.
It's more than just the "normal" HP overdesign that has their GPS splitters
like the
Hi Antonio,
Time nut, radio amateur and Hp owner eh! If you collect geiger counters we'll
have 4 out of 4 .
Robert G8RPI.
--- On Sun, 2/1/11, asma...@fc.up.pt wrote:
From: asma...@fc.up.pt
Subject: [time-nuts] OT: Rustrak Strip Chart Recorder
To: time-nuts@febo.com
Date: Sunday, 2 January,
Tom Van Baak wrote:
Steve,
After you're done chuckling, note that one man's "utterly
insignificant" is another group's passion.
A 6 foot person vs. 98 million miles is 6 / (9.8e7 * 5280),
or 1.16e-11, a unitless number that's well within our range
of expertise and fascination; neither utterly n
Yes, I've seen this. On installations in the past, when we were putting up
dual GPS systems, we always put them at least 10 metres apart. What is
actually best practice, is to put one at one end of building and the other
one at the other end.
Rob Kimberley
-Original Message-
From: time-n
You are correct, John, and I apologize for my verbosity on the topic.
Others may have the last word, if desired, I'm done.
Bill
On Sat, Jan 1, 2011 at 8:48 AM, John Ackermann N8UR wrote:
> All, this has drifted way off track and should have stopped many messages
> ago. I really hate having t
Thank you, Horst, for your voice of calm reason.
The point that I raised (or tried to...) was that no data base of this size
is capable of being error free, whether the unit cost of production is ten
billion dollars or ten cents. Random error can be reduced but it can never
be eliminated. Worse,
Happy New Years to Everybody,
Anybody can help with a short data, or info about a STC TCXO
Type TCXO 455 L1454
TRL 903 007/1
Freq 20MHz
Size 2x2x1/2 inches six pin arrangements.
Specially interested the ops voltage and the pin ass
It's a slow day at the end of too many holidays in series, counting
Solstice.
Pardon me for slacking off and getting way off track ...
I have asked three different map services for the location of a
restaurant
and gotten three different answers within a mile of each other. So I
called
the restaura
On Dec 30, 2010, at 6:53 PM, Burt I. Weiner wrote:
> Has anyone run into a situation where two GPS Navigation type
> Antenna/Receivers interfere with each other?
It's possible that LO leakage from one is jamming the other. When doing mobile
GPS receiver testing at work with a single antenna fee
bownes wrote:
I love those Hammond boxes until I have to pay the bill. The one for my n2pk VNA was about $28.
I find the non-parallel sides really inconvenient on the Hammond boxes.
It means you can't mount the boards to the sides of the box, just to
the bottom or the top.
COMPAC (htt
test
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and follow the instructions there.
Whether it correctly locates my house or the addresses that interest me is
of interest only to me. I think Garmin would rejoin that overwhelmingly
their addresses are accurate. I grant you that it is annoying as hell when
the one I want is off. Maddening, in fact.
I'm just saying that a data ba
Hello!
I need to change the 60 Hz motors of my recorders for using
them here in Europe. I found a suitable replacement for
230 V/ 50 Hz but I need to re-use the original main drive
plastic wheel. It appears a bit hard to remove.
Since I am not very skilled in micro mechanics, I am afraid
of break
I've opened similar packages (Motorola PVT-6 antennas) up with
compressed air.
YOU NEED TO BE VERY CAREFUL IF YOU DO THIS
The plastic can shatter and fire off a million splinters. Probably into
you. I wrapped the object of my attention in heavy canvas rolled up to
form a
Eric -
Not at all. I can use the room for all the other junk I buy. I appreciate
it. Thanks - Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf
Happy New Years to Everybody,
Anybody can help with a short data, or info about a STC TCXO
Type TCXO 455 L1454
TRL 903 007/1
Freq 20MHz
Size 2x2x1/2 inches six pin arrangements.
Specially interested the ops voltage and the pin assi
Here you can find a project of the Multiplier:
http://www.timeok.it/files/10_to_100_mhz_multiplier.pdf
Luciano P. S. Paramithiotti
___
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/t
Dick wrote:
Most of the destinations I program in, by address, work well.
Most of the time, I get led right to the door. So why can't
it figure out where I live ??
As others have pointed out, roads have generally been surveyed pretty
accurately but houses have not, except in heavily populated
I have a Nuvi and I love it. I have used it all over the country and
it has gotten me where I need to go. Is it wrong sometimes? Sure,
but it's wrong a lot less than I am in a strange city. Also, I don't
care if it is wrong in my own neighborhood - I know where everything
is there. It stays in
I thinks that's because the algorithms used work well most of the time, simply
not all of the time. You can call it sloppy work if you want, or you can call
it an example of effective business model: provide a tool that will satisfy 95%
of a perceived (or real) need for the price of an average C
Happy New Year every one.
It is not the GPS, it is clearly the database, and short of a detailed
survey of every address there will be variations. As Google enhances it's
database I am sure so will the Navigator sellers. We have come a long way and
we
are getting spoiled.
Bert Kehren Miami
All, this has drifted way off track and should have stopped many
messages ago. I really hate having to jump in here but I've been
getting well-justified private complaints.
Can we *please* try to keep things on topic???
John
J. Forster said the following on 01/01/2011 12:14 AM:
HNY,
I
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