The watch workers were a tragedy, based on ignorance of the risks. At the
time, there were probably only a handful of people who'd ever sustained
injury from radioactive materials. It's not clear that the bosses even
knew the women were putting the brushes in their mouths or that they knew
the
David,
While I can easily see how you can do closed loop correctioin for Dopplar
from the transmission point for a 'bent pipe' repeater, at any other
location that correction would not be valid, because the paths are not
parallel.
-John
=
On Wed, Jul 10, 2013 at 08:10:45PM +0200,
The stuff that turns color is the dial paint. The numbers are painted on
top. When the hands move, they expose the underlying paint to view.
-John
=
I wonder what that is? How come the digits don't show the same burn that
the
hands do? They certainly remained in the same position
Many people are just phobic about radiation, partially becayse tgey don't
understand it.
Some years ago, the DoD was trying to get approval for a Phased Array
early warning RADAR on Cape Cod, MA, called Pave Paws. Public hearings
were held and the public kept asking 'Will the radiation
EGG Princeton Applied Research made a very low noise preamp unit, the
113, which was pretty much the industry leader for years. It was often
used with Lock-In amplifiers. The unit used NiCds, I believe for that,
among other, reasons. I'd expect Ithaco and SAE have similar products.
-John
Burt,
I agree there is money, but, far more importantly IMO, there is lots of
political power.
IMO, if one assessed risks objectively, biological pathogens are far, far
more dangerous. In fact, I think it's the height of hypocracy when
biologists protest nuclear technology.
Consider which has
Hi,
I have three NKG3141A mini oscillators or crystals. One is marked 52.000 I
think they are all the same, but am not positive. They are of no
particular use to me.
If you want them, drop me an email off-list. First come, first served.
Best,
-John
=
Has anybody listened for LORAN in the US lately?
-John
=
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A 'bent pipe' or retroreflector doubles any Dopplar from range rate.
-John
On Wed, 3 Jul 2013 08:29:02 -0400
Bob Camp li...@rtty.us wrote:
There are two batches of GPS / WAAS sats up there:
1) The ones with numbers above 100 that are geosync and that only do
WAAS
2)
A few years back, some Group Owners, especially of ham lists, outlawed the
mention of eBay, because the concept of selling something to the highest
bidder somehow offended 'the ham ethic' that stuff should go to the 'most
needy or deserving' as measured by some underermined scale.
Pseudonames
When WWVB changed to BPSK, the phase-tracking receivers were rendered
inoperative.
Paul Swed has a tested design for a Costas Loop receiver front end and
demod that properly tracks the BPSK carrier phase and routes it to a 117A
or similar receiver.
There are also some hacks that, knowing the
There is a Wiki article on Costas Loops that includes block diagrams.
There are books about the loop filter design.
Signal squaring is simply the Trig identity:
Sin(A)**2 = 1/2*[1 - cos(2*A)]
which has a DC term and a double frequency term. Sine is symmetriv about
the 0 axis.
In practice, with
More on your question:
I'm prettyt sure that just sticking up an antenna and hooking up a simple,
phase tracking receiver for GPS will yeild nothing useful, because there
are always several birds in view, so you will get a superposition of their
signals in the bandpass and each signal will be
Do the stations they are designed to receive transmit BPSK?
-John
==
went to pv electronics direct. They are reasonably priced. But they don't
give the detail needed. I am pretty sure these are the old cmax or temic
chips. Since I don't have one can't really tell you.
Magnus,
There WERE (past tense) a number of definitions of the inch, ranging from
lines on bars of PtIr to a string of grain kernels.
Now there IS (present tense) one, defined as 2.54 cm.
-John
John,
On 06/25/2013 07:52 PM, J. Forster wrote:
No. It's THE definition
The same issue arises with old callendars. What always happens is the old
units are converted to the current standard. You never see a LASER
wavelength in barlycorns. The current definitions are used and backward
corrected.
-John
==
j...@quikus.com said:
There WERE (past tense)
2.54 mm is DEFINED as 0.1 inch. The conversion is EXACT.
-John
2.54 mm pitch is close enough to the .1 in standard. The through-hole
DIP chips will fit fine. I used to build stuff with .1 in perfboard,
sockets, and wire-wrap but only use a very few glue chips now and
It's not 'industry'. It's the international standards agency, whatever
it's called. The folks that define a meter as some number of wavelengths
of light in vacuo and so on.
There are some early perf boards that have holes on 1/16 centers, for use
w/flea clips'.
-John
===
OK, I
No. It's THE definition... there is only one.
It's not like Pi, which equals 3 for small circles.
-John
===
In message
caf_se-av85uzwvkp2zeil10dcdeohroj0wne1d-13vawcwt...@mail.gmail.com
, Robert Darlington writes:
Machinists know that 1 inch is exactly 2.54cm or 25.4mm.
to and from the
rest of the world's units.
On Tue, Jun 25, 2013 at 10:52 AM, J. Forster j...@quikus.com wrote:
No. It's THE definition... there is only one.
It's not like Pi, which equals 3 for small circles.
-John
===
In message
caf_se-av85uzwvkp2zeil10dcdeohroj0wne1d
How about a Rb or Cs standard to control the sampling rate of the DACs in
your CD player so you always have perfect pitch and no wow or flutter?
Oh, it's already being done and sold to Audiophools never mind!
-John
Simple, just think of the next snake oil. There's
An Audiophool and his money are soon parted.
-John
===
The current distortion from simple transformer-rectifier-capacitor power
supplies contains a lot of third harmonic content. In a 3 phase system
(as are
all distribution systems for commercial and industrial) the third
I assume you mean the markup. If you think that's high, just look at what
a hospital charges for an Aspirin or a Band-Aid.
YMMV,
-John
That's criminal!
Tom
- Original Message -
From: J. Forster j...@quikus.com
To: n...@verizon.net; Discussion of precise time
Joe,
With the tradition rectifier/filter power is only drawn on both side of
the peak of the sine of line voltage, sort of like this:
--- ---
-| |--| |
because the rectifier diodes only conduct when Vsupply Vcapacitor
With a switching converter, using an
In the 5950x line there is a display unit. IMO, that would be a lot easier.
YMMV.
-John
==
A Man has got to have his toys and I have a HP 59503A GPIB clock...
Has anyone seen software to maybe sync the clock with an NTP server or
something :)
Windows, Linux, it's all good!
Yes, but the new BPSK modulation defeats the ability of most carrier
tracking receivers to lock up on the carrier.
It requires something like a Costas Loop receiver, designed to handle
BPSK, to extract the unmodulate carrier.
-John
==
So, legal traceability requires many steps
horsepower, so hopefully tweaking is all it will take.
John
On 5/20/2013 9:50 PM, J. Forster wrote:
A couple of messages posted Friday, 5/17, showed up today 5/20, just
before I posted the query.
The issue is relatively recent... since late last week.
-John
I'm
There are cafe/pizza options in the Strattion Student Center, although
seating is somewhat limited. But there are other places in the same
building.
It's a short walk from the flea site (Mass Ave at Vasser Street) Bldg W-20
-John
I was there as well, but did not see much of
It is surprizingly difficult to find other shoppers at the Flea. I
suspoect it's because people sort of 'shop with the flow'- all moving in
the same direction.
-John
=
Paul,
So you were there and I missed you then. It was hard to find anything.
Looking in all the corners.
in the area - recent MIT graduate - and would be happy to set
something up (though I think my gf's birthday is that day, so maybe not)
Andy Bardagjy
bardagjy.com
On Mon, May 20, 2013 at 8:34 AM, J. Forster j...@quikus.com wrote:
There are cafe/pizza options in the Strattion Student Center
Is anyone else seeing posts to this list showing up many hours to days late?
-John
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and follow the
. My most recent post showed up many hours (maybe six or eight)
after I sent it. That was perhaps two or three weeks ago.
73,
Brent, KD0GLS, Minneapolis
On 20 May 2013, at 18:18, J. Forster wrote:
Is anyone else seeing posts to this list showing up many hours to days
late?
-John
Not me. IMO, the pickings were pretty slim. I think a number of ventors
opted for Dayton.
-John
==
Anyone got any Time Nut quality items at the MIT fleamarket today ?
Stan, W1LE Cape Cod
___
time-nuts mailing list --
I got this reply from a researcher friend:
A better link might be
http://www.npl.co.uk/science-technology/time-frequency/optical-frequency-standards-and-metrology/
---
Date: Mon, 29 Apr 2013 06:11:15 -0700
Subject: Re: [time-nuts] laser locking
From: j...@quikus.com
To:
Here is a start:
http://www.npl.co.uk/upload/pdf/9608%20-%20A0%20Poster2%20v4%20Final%20lr.pdf
-John
I'm asking mostly out of interest, because i have no clue how this
is done. Although i've read many papers on laser spectroscopy and
how to acheive even better atomic
When I was building space payloads, every component had to meet or exceed
a VCM (Volitile Condensible Material) spec.
This was mainly of concern with plastics, like wire insulation (we used
Teflon and Kapton) but especially potting compounds.
And, don't even think about ball bearings near optics
Putting 100,000 items in space is a non-starter. The existing space trash
is already a big concern, and there have been seriuous proposals for
missions to clean it up. An iPhone, travelling at orbital velocity, has a
lot of kinetic energy!
There was an uproar years ago when the Westford Needles
Sometimes imaging sensors are just not available at wavelengths of
interest. There is no choice but mechanical scanners.
Bearings are also needed to de-spin antennas, etc.
-John
=
On Sat, 27 Apr 2013 12:06:45 -0700 (PDT), L. Forster wrote:
When I was building space payloads, every
Try www.ArtekMedia.com
Dave has IMO the best info on HP (and other) stuff available.
Best,
-John
==
Hello Folks!
I turn to you in hope someone can help me.
The old but good signal generator 8640B is by Agilent declared obsolete
and no support available.
The frequency
Peter,
I believe you are correct about the $1M per year trip point, but would
remind you that this is a very slippery slope.
When the Income Tax was originally enacted, very, very few were impacted.
That is no longer so.
The Alternative Minimum Tax was enacted to hit those who have saved and
. Particularly, as it is being handled to push it
through so fast without the proper vetting.
BillWB6BNQ
J. Forster wrote:
Hi,
I recieved a very odd communication, apparently from eBay, this morning.
It is a request to contact Congress about sales taxes on internet sales.
It APPEARS
In message 54941.12.226.214.5.1366726922.squir...@popaccts.quikus.com,
J. Fo
rster writes:
It concerns me that eBays message FAILS the authentication test they
themselves advocate.
I think that is because this message does not come out of their
backoffice systems, but rather out of their
Hi,
I recieved a very odd communication, apparently from eBay, this morning.
It is a request to contact Congress about sales taxes on internet sales.
It APPEARS to be genuine, but I'm unconvinced.
Has anybody else received this email, and is it for real?
Puzzled,
-John
tell you in a heartbeat if the thing is
genuine or a malware attempt.
Keep the peace(es).
*** REPLY SEPARATOR ***
On 22-Apr-13 at 06:13 J. Forster wrote:
Hi,
I recieved a very odd communication, apparently from eBay, this morning.
It is a request to contact Congress
As you may know, some time ago, I acquired an all-but-mythical APN-9A
LORAN-A receiver/Indicator.
This is not the common APN-9 LORAN-A, but is a hybrid (analog/digital)
version built for the B-36 bomber. Very few were built and documentation
is just about non-existant.
I have been very
will be scanning it
eventually.
Best,
-John
===
On Sun, Apr 21, 2013 at 11:21:33AM -0700, J. Forster wrote:
As you may know, some time ago, I acquired an all-but-mythical
APN-9A LORAN-A receiver/Indicator.
This is not the common APN-9 LORAN-A, but is a hybrid
(analog/digital) version
http://w1mx.mit.edu/flea-at-mit
-John
==
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Hi,
As some of you may know, the Boston Marathon bombers killed an MIT Police
Officer about 100 yards from the site of the Sunday MIT Flea Market. MIT
is now shut down, for today at least.
One of the suspects is dead. Another is at large in Watertown close by.
The whole area is on 'lock-down'
I think that you should be able to take the signal right out of the
backbiased diode and run it straight into a microwave mixer w/ a fixed 7
GHz LO and frequency discrimitate the IF output from the mixer to generate
a control signal for your LASER.
In theory, if your LASERS were very, very, very
My understanding is that you want to operate photodiodes with high reverse
bias for the best frequency response. The bias widens the space charge
layer, thereby reducing the capacitance of the device. The high electric
fields in the SCL region also sweeps the hole-electron pairs, produced by
is a 50 Ohm coax to a broadband amp w/ 50 Ohm input.
In the limit, the amp is put right at the detector and has near-zero input Z.
Best,
-John
=
On Sat, 30 Mar 2013 10:52:54 -0700 (PDT)
J. Forster j...@quikus.com wrote:
My understanding is that you want to operate photodiodes
Watch eBay for a small static inverter. I got an Abbott one for under $50.
It takes 28 VDC and puts out 115VAC 400 Hz.
-John
===
How about one of those 2kw car stereo amps with a 555 input tone ?
--- On Wed, 3/27/13, Bill Ezell w...@quackers.net wrote:
From: Bill Ezell
An appropriate (but small) Group already exists:
http://tech.groups.yahoo.com/group/Aerospace_Hardware_Collectors_Group/
-John
===
Yeah I'd join a gyro-nuts group. I have a shelf full of weird gyros, a
stable
platform, other gyro stuff. I made a little power supply to
It was almost certainly for powering a WWII vintage fluxgate compass system.
-John
==
I have a little dynamotor somewhere which makes 3 phase 400 Hz. Tiny
little
thing! Only puts out like 15 VA, and not very noisy either. IIRC is was
called
an Instrument inverter
On
Recently, my 'puter clock has been resetting back an hour every so often.
The auto-sync to time.NIST.gov is the timeserver it uses.
Does that site change to Daylight time?
Does the Windows time site change to aylight time?
Tjanks,
-John
==
I think the date for the DST time change were altered some years ago,
hence the Win SW messes up. I keep the 'puter clock on local time for
convenience, and switch because eBay does. I am only concerned with
roughly accurate local time.
Best,
-John
===
Recently, my 'puter clock
Thank you.
My question is really does NIST time change to DST. I'm completely happy
with manually changing the time twice a year by hand. I'm trying to see if
disabling the auto-update fixes the problem. Resetting a clock is not
exactly a major task.
I have no interest in going to Vista or
do DST changes so I've never had
to deal with it - other than dealing with some WWVB clocks that don't
let you disable DST!
Ed
On 3/23/2013 11:02 AM, J. Forster wrote:
Thank you.
My question is really does NIST time change to DST. I'm completely happy
with manually changing the time twice
If you double left click on the clock; click on the Time Zone tab, there
is a check box for DST update on/off. Since the dates of DST have changed,
it does not work right.
Best,
-John
=
Hi all,
I am a new member, in St Pete, Florida. I noticed that last week, my XP
laptop had
Unless you are very careful, LinkedIn harvests your address book and spams
everybody in it to join.
IMO, it's malware.
YMMV,
-John
Hello,
I am sorry for the email traffic that Linked-in has generated. Somehow it
picked up every email address in my email list.
My
Have you tried to put BPSK through a narrow band filter and looked at the
envelope at the output?
-John
==
Hi
Also consider that some of these receivers use a narrowband crystal filter
in front of the IC. I doubt they spend a ton of money on the components,
so
that may not be
If a clock uses a narrow (high Q)filter, the BPSK may mess up the
amplitude response. The Time Code is modulated AM on the carrier.
If this is the case, broadening the filter, possibly by adding shunt
resistance, might fix the issue.
FWIW,
-John
On Wed, Mar 20, 2013 at
Where are you?
-John
===
Hi All;
I hear Loran C signals back on again, I'll fire up the SRS FS-700 and
check.
RP
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Hi,
I was just given an Anarobo Quartz writwatch, like this:
http://www.listia.com/auction/1183485-robot-watch-with-turquoise-blue-clock
Honestly, it is THE cutest trhing I've see in ages, and made of solid
stainless steel. Does anybody know anything more about it? Was it a promo
of some kind?
So, if you use phase-tracking hardware, it's good for three more weeks.
Wonderful... not. :((
LORAN-C all over again!
-John
=
On Fri, Feb 22, 2013 at 06:01:46PM -0500, paul swed wrote:
Donald from what I have been seeing they are consistent.
But there is a 1 hour period
FYI, from another list. Contact OP directly, not me.
-John
===
Original Message
Subject: [TestEquipTrader] FTS-4060 Cesium Time and Frequency Standard
From:Chris Howard w0ep w...@w0ep.us
Date:Tue, February 19, 2013
Paul,
I doubt Patek makes ANYTHING a mere mortal would call 'cheap'.
YMMV,
-John
=
Actually I guess I do have a further comment. These Pateks look cheap
compared to the old hp5060 24 hour clock versions.
On Tue, Feb 19, 2013 at 1:23 PM, Brooke Clarke bro...@pacific.net wrote:
A desk clock is more like it.
-John
Totally agree. But the old HPs were a lot nicer looking for the $$
Still have not figured out how you would use one of those as a wrist
watch.
On Tue, Feb 19, 2013 at 5:12 PM, J. Forster j...@quikus.com wrote:
Paul,
I doubt Patek makes
compared to my T'Bolt GPS/DO is -2.5E12.
Stan W1LE Cape Cod
On 2/4/2013 8:56 PM, paul swed wrote:
We can only dream. But will take what I can get for as long as I can
get
it. It sure in the heck kicks wwvb's capabilities.
Regards
Paul
On Mon, Feb 4, 2013 at 6:20 PM, J. Forster j
Great. Now if the transmissions continue and the format doesn't change!
-John
==
Boy LORAN austron2100 and 2100f and GPS HP3801are tracking really well.
The
Austrons are 1.5-2.0 E-12. Pretty much getting at there limits after 5
hours.
Regards
Paul.
On Mon, Feb 4, 2013
Hmmm... . That puts a different face on it.
If it a LORAN-like signal, but with an eventual format, incompatible with
existing hardware, like the Austron 2100F, any cheering will have been in
vain.
YMMV,
-John
==
I understand its no eLORAN, but I keep calling it LORAN and
Folks,
As you have seen, the Group has been getting sammed lately. Most soams
never get posted to the Group, but some do. These apparently come from
hacked Yahoo email accounts.
Yahoo itself was hacked, and the passwords to about half a million Yahoo
email addresses were obtained.There are
You might want to ask on the GenRad Yahoo Group. There is nothing in the
GR Historical Society CDs, as of te last version I have.
-John
===
Any schematics for the following general radio
Primary standard syncrometer clock
Girard 617 417 1766
jsimon1026 @aol.com
691c
690d
. Ammonia also requires pressure vessels
and in pure form is incredibly corrosive
So unless you are trained in these techniques just don't even think about
doing this
Sent from my iPhone
On Jan 26, 2013, at 3:57 PM, J. Forster j...@quikus.com wrote:
You can't be serious. Ammonia gas or liquid
For microscopes and all related topics, the Yahoo Microscope Group is very
knowledgeable. It has over 3500 members now.
-John
=
This is by definition Off Topic
I'm looking for a forum where people are about as technically
competent as here but where an amateur scientist
Trying to play with liquid acetylene is like juggling operating chainsaws.
-John
Il 2013-01-26 14:58 Bob Camp ha scritto:
Hi
Platinum RTD's are a pretty good bet for -80C, they hold up well down
there. For calibration, ammonia and acetylene both have triple points
in the
You can't be serious. Ammonia gas or liquid is dangerous.
You can buy calibrated RTDs or rent a quartz thermometer and stay alive.
YMMV,
-John
===
Hi
If the intent is to come up with a triple point cell to calibrate your
thermometer, acetone's triple point (at 178.5K) is a
The microscope group can help with reccomendations. 1000x is really
pushing it, because of 'empty magnification'.
Best,
-John
==
On Sat, Jan 26, 2013 at 10:00 AM, li...@lazygranch.com wrote:
If the intent is surface mount work, get an old BL Stereozoom 3. I'd
suggest
at 190K is going to have
something nasty about it.
Bob
On Jan 26, 2013, at 3:57 PM, J. Forster j...@quikus.com wrote:
You can't be serious. Ammonia gas or liquid is dangerous.
You can buy calibrated RTDs or rent a quartz thermometer and stay alive.
YMMV,
-John
===
Hi
The Yahoo Microscope Group already exists with over 3700 members world
wide, which forms a huge knowlege base, from biology to microelectronics.
http://tech.groups.yahoo.com/group/Microscope/
Why re-invent the wheel?
-John
==
I like the idea of a amateur microscopy nuts reflector.
It's an unfortunate fact of life. When a technology company grows, sooner
or later the MBAs, lawyers, and vulture capitalists take over and the
priorities get set by them and the quarter-over-quarter performance,
rather that the science or engineering.
I detest managers who believe that a person
Most modern books on micriowave design (and probably Wiki) have the
basics. They are based on the NMR principle (Nuclear Magnetic Resonance).
This is the same physics used in MRI.
You might also look at old issues of the HP Journal or the Watkins-Johnson
house journal. The former is easily
Over Christmas, I was chatting with a high accuracy clock researcher in
the UK and he mentioned a trip to Brighton on the Winter Solstice and saw
notices for this:
Burning the Clocks Festival.
http://en.wikipedia.org/wiki/Burning_the_Clocks
LoL.
-John
-John
===attachment: Mayan.jpg___
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
Yes. There is a Yahoo Group spwecifically about EIP products.
-John
I have an EIP counter with a problem, stashed, that I need to look at
eventually. So have been following the thread a bit.
If you guys get somewhere conclusive (or not), might be nice to post a
summary
FYI, this is an archive of ROM EPROM dumps for various test gear.
-John
==
Original Message
Subject: [hp_agilent_equipment] Blue Feather File Archive Updated
From:Bruce Lane kyr...@bluefeathertech.com
Date:Sat,
Oops. It seems that Bruce's announcement is premature.
Best,
-John
FYI, this is an archive of ROM EPROM dumps for various test gear.
-John
==
Original Message
Subject: [hp_agilent_equipment] Blue
From Page 5:
The need to offer legacy LORAN-C system capabilityt for legacy LORAN-C is
not required in the US and
Does anybody who heard the test signal know for certain that the
modulation was that being proposed? Perhaps they were just testing a new
transmitter with the old modulation?
It
IF, and it's a big IF, it is compatible with existing LORAC-C receivers,
it would be a most welcome development, and would mitigate to some extent
the idiotic decision to shut down LORAN-C.
If it's incompatible with the existing, installed receivers, because it
uses some kind of proprietary, sole
It sounds like a SW limit, not hardware.
Silly question: Have you read the manual?
-John
=
29/11/2012 09:30
The replacement for the missing U6 chip arrived this morning and it
now completes the 200 MHz self test It will read up to the limit of my
frequency generator on Band
OK. It maybe time for the hair dryer and freeze spray. Also, try
re-seating any socketed chips.
-John
==
It sounds like a SW limit, not hardware.
Silly question: Have you read the manual?
-John
29/11/2012 15:31
Hi John, will re read the section on limits, but please see
The first thing to do with any EIP counter is to remove and reseat all the
PCBs. The card sockets they use are sometimes flaky. Simply doing this
fixed most of the counters. This is especially true if they have been
storfed for a while.
YMMV,
-John
===
27/11/2012 14:18
the attic and
allows for better reception
Sent from my iPhone
On Nov 25, 2012, at 10:15 PM, J. Forster j...@quikus.com wrote:
There are ways to do it w/o drilling holes. Most all houses have vent
stacks for the plumbing, typically 3 or 4 inch cast iron or thick
plastic.
You can clamp a couple
Have you contacted ArtekMedia for any manual information?
Also, have you checked/posted a question to the VNA Agilent Forum?
-John
==
I've got an HP 8720D VNA. This has been out of support from Agilent
for 8 years, so its getting on a bit. There's a clock in the
instrument
You might better use RTV. I's plenty strong enough and can be taken apart
if needed.
-John
=
Unfortunately not, it's part of the molded bottom piece of the antenna
casing.
On 11/26/2012 9:24 PM, Chris Albertson wrote:
On Mon, Nov 26, 2012 at 5:51 PM, Peter Gottlieb
Generally, it should work most of the time, which is probably good enough
to discipline your local standard.
Obviously, you want it above any foil backed insulation. Generally, near
the ridge would be good, as ridges don't get that much snow cover.
I've had a handhelg Garmin lock up OK in a lab
There are ways to do it w/o drilling holes. Most all houses have vent
stacks for the plumbing, typically 3 or 4 inch cast iron or thick plastic.
You can clamp a couple of feet of pipe onto one of those and run the wire
to under an eve or through a gable end, adding a drip loop of course.
But, if
You might want to ask on the EIP_Microwave Yahoo Group. EIP made some of
the best microwave counters ever.
-John
=
Wanted: microwave counter. Must go to at least 18 GHz.
For trade: HP 5335a. Working. HPIB, Enhanced HPIB triggering options,
etc.. Depending on unit cash can be
It depends on what you mean:
First off, the phase modulation renders many existing phase tracking
receivers useless. Period.
A few current receivers are immune to the PSK, but they do not 'use' the
PSK modulation, but they just ignore it.
My understanding is, the new modulation was designed
I believe they have a design that is working in silicon.
If so, that's a $ million or more head start. That, to me, is a monopoly
because any other entrant to the market would have to amortize that
expense.
Furthermore, there is the issue of patent suits, even if you can design
around their
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