MW or LW IR cameras are not exactly home shop stuff Peter.
-John
==
I had a HP 3326 which had a power supply in foldback. All the modules are
inaccessible unless you have a rather rare set of extenders anyway. The
voltmeter method quickly led me to the board and a bench supply
Nope.
The cap was cool because the thing was shorted and had no voltage across
it. Power is V * I.
As I said before, either an open or a short circuited component dissipates
no power.
The defective component is NOT always the hot one. A hot component is only
a pointer to the fault, not
Not w/ that instrument, but try the following. I assume you have the book
w/ schematics.
Power the unit and with a DMM or VOM check the PS rails to see which is sick.
From the book, locate all bypass caps on that rail.
Put your DMM across each in turn. The one with the lowest drop is likely
the
I should have added that you can get a pretty good idea of whick branch on
a PCB is drawing current by probing along the trace. This is especially
useful if the rail has a bunch of branch distribution lines.
Also, if the three-terminal regulator is overheating, disconnect it and
power just that
Hi Magnus,
I very much doubt you could get anything useful out of a TDR. There is no
reason I can think of that a power rail should look anything like a
transmission line and the rail should be an AC short every inch or so.
FWIW,
-John
On 03/23/2012 09:30 PM, J. Forster wrote
To: time-nuts@febo.com
Subject: Re: [time-nuts] Anyone familiar with SR-620 repair?
On 03/23/2012 09:30 PM, J. Forster wrote:
I should have added that you can get a pretty good idea of whick branch
on
a PCB is drawing current by probing along the trace. This is especially
useful if the rail has
Here is a trick or two that may work:
feed a very small AC voltage with say 1KHz and 10mV into the bad power
rail. It won't hurt anything.
Then use an old cassette players' magnetic pickup and amplifier to follow
the signal to the short. No need for expensive hall effect meters.
Good
The HP 547A Current Tracer is an AC only instrument, as I thought. It uses
a coil as a pickup, not a Hall device.
See: http://cp.literature.agilent.com/litweb/pdf/00547-90006.pdf Page 11
Too bad. :((
-John
==
In a message dated 3/23/2012 14:13:57 Pacific Daylight Time,
Most instrument PCBs have scores of bypass caps... all in parallel.
-John
=
Shouldn't be too bad, a 10uF cap would have 15 Ohms impedance at 1KHz,
150
Ohms at 100Hz, and one could inject at different places on the trace...
away from the big bypass caps.
Doing the same with DC
It's on the Agilent site. Not a great copy, but readable.
www.agilent.com
-John
===
Just located an antique HP117A in the basement.
Can someone direct me to a free source for the manual?
I collect boatanchors and this is sort of one.
73
Bill wa4lav
On the 2100Fs it reacquires and locks, if the power has not been
interrupted, but you have to manually set thye Mode to compute the
frequency error. Otherwise, it just indicated microseconds.
A power failure and you have to reenter tye GRI.
-John
==
My experience is you always
On the 2100Fs it reacquires and locks, if the power has not been
interrupted, but you have to manually set thye Mode to compute the
frequency error. Otherwise, it just indicated microseconds.
A power failure and you have to reenter tye GRI.
-John
==
My experience is you always
Sometimes, it pays to just sit on your butt. I never took my Austron loop
down or the 2100F out of the rack. :)))
-John
==
Hail to the US institutions which first stopped LORAN action long enough
so that pricy but apparently useless equipment could enter the shacks of
European
Hi,
Is anybody keeping track of when each station is being seen? Some form of
schedule w/ time and GRIs would be a real help.
Thanks,
-John
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Perhaps a way to do this is by an attached Excel spreadsheet that can be
passed around and augmented as it goes.
FWIW,
-John
Hi,
Is anybody keeping track of when each station is being seen? Some form of
schedule w/ time and GRIs would be a real help.
Thanks,
-John
Some years ago, I bought some original IBM memory for a Thinkpad laptop.
The stuff physically fit, but shorted out when installed, because the
package profile was different.
I complained to eBay and spent a bunch of money on Express Mail, etc.
I got NOTHING.
Conclusion: eBay protections are
Suppose the modulation is not present. The output of the phase detector
that steers the local standard ot indicator works correctly.
Now reverse the 60 kHz carrier. The phase detector works exactly thye
opposite way... wrong.
Now alternate between 0 and 190 degrees.
The loop alternate works
Jim wrote:
a square wave,
multiplied by itself, has the same output as input.
Oh... I was assuming you had the two quadrature square waves (which are
just like the saturated LO for the mixer in RF land)
You don't have two square waves in quadrature. You have the (amplified)
signal from the
Why make it simple when complicated also works?
-John
On 3/15/12 7:49 AM, J. Forster wrote:
Suppose the modulation is not present. The output of the phase detector
that steers the local standard ot indicator works correctly.
Now reverse the 60 kHz carrier. The phase detector
Frankly, my dear, I'd rather be a generalist.
-John
On 3/15/12 8:10 AM, J. Forster wrote:
Why make it simple when complicated also works?
-John
Can't get your doctorate doing something someone else has already
done...grin
Enormous literature out there on this, and it's
Has anybody looked at the impact of the periodic phase reversals of BPSK
on the loop of phase-tracking receivers, like the Fluke or the HP 117A?
NIST does claim backward compatability for time. But what about time
interval?
I know you can extract the carries from BPSK with a Costas Loop (which
All very nice, but if this change renders all existing receivers useless.
How does that improve things?
All it does is wipe out all the existing phase tracking infrastructure.
The only benefit is to the government who can reuse the WWVB transmitter
and frequency allocation. Everybody else will
Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
J. Forster wrote:
All very nice, but if this change renders all existing receivers
useless.
How does that improve things?
All it does is wipe out all the existing phase tracking infrastructure
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
J. Forster wrote:
All very nice, but if this change renders all existing receivers
useless.
How does that improve things?
All it does is wipe out all the existing phase tracking
infrastructure
what ever the delay at 60KC thats a long
delay. ;-)
The delay (phase shift) is not needed.
Best,
-John
=
Regards
Paul
On Wed, Mar 14, 2012 at 10:12 PM, David I. Emery
d...@dieconsulting.comwrote:
On Wed, Mar 14, 2012 at 05:13:47PM -0700, J. Forster wrote:
Now it looks like
On 3/14/12 8:07 PM, J. Forster wrote:
John
Like your thought. I seem to remember costas loops work like that to
recover the carrier.
Paul,
It recovers a bipolar signal to steer the local VCO as well as the
data..
It also needs a quadratue hybrid at the VCO frequency (although it might
The media is reporting a large solar storm and saying it will upset GPS
among other things.
Has anybody see any effects?
-John
===
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
In Boston, WWVB is often very noisy. When I compared the received signal
to a local standard, some days it'd be rock solid. Other days it's a dog's
breakfast.
In fact, it would change dramatically around a weather front passage too.
I'd think so.
-John
=
My Spectracom 8170
Which manual? 2100F?
-John
Following recent discussions on the partial resurgence, for now anyway, of
Loran-C in the US I have uploaded the Austron 2100 Loran-C Timing
receiver
manual to Rapidshare, with many thanks to Dan Rae who provided the
printed
original.
As with my
Last seen, the 4004 chips were much in demand (perhaps by gamers)
-John
In message
cal8xpmoo_arncqvmt65xko5ai7xz2xd1bdxfxm1dnzuruqr...@mail.gmail.com
, Azelio Boriani writes:
Found very little googling for this ML200, found only a line in the 1977
Radionavigation Journal...
A light footprint LORAN is what I've been suggesting for several days.
As to putting it into private hands, there is a potential for massive
finmancial fraud in market arbitrage. It was only a couple of weeks ago
that this made headlines with GPS timing.
-John
=
In message
footprint system, why fire up the old heavy
footprint gear at all?
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of J. Forster
Sent: Monday, March 05, 2012 10:40 AM
To: Discussion of precise time and frequency measurement
Already been done, and patented, without adding pulses to existing AM
stations.
-John
==
The best and by far lowest cost solution is to pay TV stations and
maybe AM broadcast stations to add a timing pulse a few times per
second. No transmitters to build. The receivers would
5. Counselman Charles C III, Hall Timothy D: Instantaneous
radiopositioning using signals of opportunity. Massachusetts Institute of
Technology Jul, 25 2002: WO 2002/057806
-John
==
On Mon, Mar 5, 2012 at 10:09 AM, J. Forster j...@quikus.com wrote:
Already been done
Just driving the displar is probably very easy. Given the era, it probably
takes no more than a parallel output port and a strobe to latch the data.
The nixies may have BCD decoders, but that's about it.
The 'scope may be analog from the receiver or have a couple of parallel
D/A's and a latch and
Are they useless because of the 4 digit GRIs?
If so, how about introducing a synthesizer into the 10 MHz ref input to
jigger the 10.000 MHz to something close such that the receiver will think
that 96,460 is actually 96,400 or 96,500. The master oscillator driving
the synth will still be
-03-04 18:43, J. Forster escreveu:
Are they useless because of the 4 digit GRIs?
If so, how about introducing a synthesizer into the 10 MHz ref input
to
jigger the 10.000 MHz to something close such that the receiver will
think
that 96,460 is actually 96,400 or 96,500. The master oscillator
With today's electronics and 'puters, a new system could be designed to
operate essentially without local staffing, IMO. The biggest problem would
be getting antennas with reasonable radiation efficiency at 100 kHz,
without using 1000' plus towers.
One option might be more, smaller, cheaper
Neither does the 2100F, although it does put out an RS-232 message
1/second as I remember.
-John
=
Sorry: the 2000C doesn't directly displays TOD.
What I wish I had was an UTC seconds tick for
epoch time determination.
Kind regards,
Antonio
CT1TE
Em 2012-03-04 21:08, J
Look at it from a politician's point of view:
Would you really want to admit that your government screwed up and
destroyed a working, but old, system, and now you find you need it as a
backup to GPS?
Or, would you rather build a shiney, new, state of the art system, which
just happend to be
Does anybody have any info on the 2100C receiver. I have one that somebody
gave away, mistaking the listing for a 2100F.
Thanks,
-John
=
Hi
Page 18 here : http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA337399
Gives a pretty good idea of what a 5000 is. Simple answer- it's a
I wonder if what they are testing now uses smaller antennas and/or lower
power? I could easily see that being viable in light of progress in
receiver technology.
-John
===
Well at 1500 the 89700 went back off the air.
So I have to suggest keeping your Tbolts and HP 3801s. ;-)
Paul.
On Fri, Mar 2, 2012 at 3:28 PM, J. Forster j...@quikus.com wrote:
I wonder if what they are testing now uses smaller antennas and/or lower
power? I could easily see that being viable in light of progress in
receiver technology.
-John
===
Well at 1500 the 89700
Terrific news!
-John
Well darn
Though I can hear them on the longwire with a hp3586. It appears the loran
c preamp may have bit the dust. I checked the austrons with the simulator
and they are doing fine.
Will have to look at the preamp this weekend. Easily fixable generally
I about agree. It consistently nailed my position w/in about 100 feet on a
LORAN Chart using an early uP (8085) based receiver (Appelco). The
antenna was a Radio Shack whip with a preamp at its base.
With an Austron 2100F against a Rb and Oscilloquartz or HP 117A things
were reliably in few in
Put the URL into Google Translate.
-John
==
I suspect a lot of the ebay sellers are buying stuff from Taobao and
just reselling it. For example, this appears to be the original
source of the FE-5680As which were supplied with the OCXO and socket
(although he seems to have run
Hi All,
I have one cable for sale. It's the cable for the newer PCMCIA GPIB Card,
Part Number: 186736C-01
The actual cable is: 2 Meter Cable, Part Number: 186557A-02 . It has the
usual male/female connector on one end, and the funky NI connector on the
other.
I bought this NOS, but never used
Thanks everybody. The cable is spoken for.
Best,
-John
=
Hi All,
I have one cable for sale. It's the cable for the newer PCMCIA GPIB Card,
Part Number: 186736C-01
The actual cable is: 2 Meter Cable, Part Number: 186557A-02 . It has the
usual male/female connector on one end,
Progressive government has distorted equal opportunity to mean equal
outcome. This is the creed of the 99ers and a recipie for societal
suicide.
The correlary is:
From each, according to his ability,
To each, according to his need.
-Karl Marx
YMMV,
-John
===
...while the gifted
Tek went into the toilet when Danaher bought them out.
I bought a TDS1002 and could not even get the PC software to download
screen images, even after registering.
However, registration sure did get me onto their spam list. It took at
least a hald-dozed tries to get their spam to stop.
I have
Perhaps LeCroy has changed it's spots from the NIM and CAMAC days, but any
documentation, like service manuals, was completely unavailable. I tried
several times.
I am not about to buy anything where at least a schematic is not
available. I have never sent an instrument in for factory service,
Frankly, I think the rapidity of the financial system is not a good thing.
It encourages the kind of speculation on Wall Street that more properly
belongs in Las Vegas.
It has bred the demands for ever increasing quarter-over-quarter results
that result in cooking of the books and so on that
And how do you remove the silicone oil?
Ever heard the one about the hotel guest who complains about the mouse in
his room?
-John
===
On 02/11/12 04:52 PM, John Ackermann N8UR wrote:
Is there a recommended way to remove the residue of what I presume was
thermal tape on the
Three of the GREAT MEN of atomic physics have died pretty recently, R.V.
Pound, Ed Purcell, and Norman Ramsey. They were call at Harvard.
-John
=
Just a month ago I found out that Norman Ramsey had died.
I met and talked with him about 20 some odd years ago before he recieved
In theory only. I have been on both FaceBook and LinkedIn Do Not Contact
lists, and I got another spam within the last two days.
-John
==
Just a FYI, you can request Linkedin to get on a do not contact list.
This way every time someone gets their address book harvested, you
It's old, but how about the SAO Atlas catalog. It goes to something like
7th Mag, so there are lots to pick from.
-John
==
On 1/26/12 2:55 PM, Jim Palfreyman wrote:
As a reasonably experienced occultation observer (and the very reason I
got
into being a time-nut - so I could time
be useless
on a ship.
cheers,
Neville Michie
On 25/01/2012, at 12:52 PM, Jim Lux wrote:
On 1/24/12 3:19 PM, J. Forster wrote:
Is the USNO almana/ephemeris still published in hard copy every
year? That
had moon timing, etc.
You can download pieces from the Astronomical Applications
This is intolerable data mining by LinkedIn. FaceBook does the same thing.
It is spread either by malware or purposeful deception by those companies.
-John
===
LinkedIn
I'd like to add you to my professional network on LinkedIn.
- Scott
Scott Dennis
Owner
.
apparently it's really easy to do stuff like this on social networking
sites. I avoid all of them like the plague so this hasn't happened to
me yet.
-Eric
On Wed, Jan 25, 2012 at 2:02 PM, J. Forster j...@quikus.com wrote:
This is intolerable data mining by LinkedIn. FaceBook does the same
Ordinary? You mean something like a Wild T-2 or Kern DKM-2. Even then
getting close to 1 arc-second requires a lot of care.
A wild T1 reads directly to 6 seconds, but with repetition will get 1
second.
Unlike digital instruments you need a little bit of skill and
persistence to get the best
If enough spam complaints are sent to SpamCop, they might get put on the
spam blacklist and their emails will get trapped in the spam filters.
You can be sure that this spam will be repeated about every two weeks.
-John
=
It seems you can only block individual requests. Thus each
Hi,
I heard from Roland that the specs are costing more to ship than expected.
He has had to raise his price a bit to:
1 Spec $115
2 Specs $220
Again, please contact Roland off-list at: roland.guil...@yahoo.com
-John
===
___
...@yahoogroups.com]On
Behalf Of J. Forster
Sent: Monday, January 23, 2012 5:34 PM
To: n...@verizon.net; Discussion of precise time and frequency
measurement
Cc: microsc...@yahoogroups.com
Subject: [Microscope] Re: [time-nuts] HR2000 Retuning
That about covers it. One note, this preoceedure will move
If you are looking for RF hardware, you might join the TestEquipTrader
Yahoo Group and post your request there.
-John
=
Several years ago eBay offered some nice amplifier blocks that went up
to 500 MHz with about 10dB gain and 25dBm maximum output.
The part number on the
[snip]
Then you measure
distance by tossing a big chunk of lumber overboard with a measured
rope tied to it. The captains hated doing math by hand so they
calibrated the rope by tieing knots at intervals so the natural unit
was one arc minute at the equator and called it a knot.
Nope. A
Then, as now, a knot is a unit of speed, not distance! If you counted 7
knots in a standard song, it was still speed.
-John
==
On Tue, Jan 24, 2012 at 10:31 AM, J. Forster j...@quikus.com wrote:
Nope. A knot is a unit of velocity, not didtance.
A knot is 1 nautical mile per
Google:
FMQ-1 Test Set
The -24P Parts Manual w/ exploded parts ID is in many places and has a
drawing of the front panel. It has no schematics.
The full manual will be -15 to -45 Depot Maintenance Manual, per standard
Army nomenclature. The last digit will be 5, without a following P.
-John
they should do it correctly, or not at all.
YMMV,
-John
=
On 01/24/2012 11:59 PM, J. Forster wrote:
Google:
FMQ-1 Test Set
The -24P Parts Manual w/ exploded parts ID is in many places and has a
drawing of the front panel. It has no schematics.
The full manual will be -15
American Time Products still exists:
http://www.powercontroldevices.com/about-us/
ATP has also been closely connected to Buliva, makers of the Accutron.
-John
Amazing, the things that can be picked out of the noise.
I have one of these frequency standards, but it
Self generating, therefore selenium (or possibly silicon). There is no
bias so it's not a photoconductor. I'm sure it's called out in the -24P
manual.
-John
===
Thank you everyone for your comments, and if I've got it right Brooke, if
you paste this into your browser:
I've been bombarded with emails about retuning the spectrometers. I'll get
the info and repost it in the near future, unless Peter would prefer to
put it up himself.
Best,
-John
==
___
time-nuts mailing list -- time-nuts@febo.com
To
The fundamental problem is our system of units is not defined rationally.
What is universal about a meter or a second or a kilogram? Nothing!
If you were suddenly transported elsewhere in the universe bareassed,
could you replicate the standards we use?
If you lived on another planet, perhaps
Yes. The 1421 MHz is about the closest, practical, universal standard
available to us at the moment. But is not absolute. What if you were in a
different gravitational field? (The Pound gravitational red-shift
experiment)
-John
=
On 1/23/12 9:45 AM, J. Forster wrote
The atmospheric issue is more differential refraction, than refraction per
say. A zenith pointing camera is likely the best choice. The zenith is the
direction of the least atmospheric depth also.
-John
===
I can think of two general scenarios here.
If you planet has air you will
have just one, and it's crappy but works, and I'll
just
stop right there while I can still afford rent.
On 1/23/2012 10:32 AM, J. Forster wrote:
I've been bombarded with emails about retuning the spectrometers. I'll
get
the info and repost it in the near future, unless Peter would prefer
You might be able to track the reddish stars both night and day. If you
put a dark red filter in front of the sensor, it will get rid of much of
the sky. The sky and stars are very different optically, the former is an
area source the latter a point source. The energy from the sky varies
directly
I think you'd want a slit, not a pin hole. The pin hole would be
better but it would only work one day a year.
Actually two days per year, unless it was adjusted for the summer or
winter solstice, then it'd be one.
-John
===
___
that want to be buried in a passage grave?
Bill Hawkins
-Original Message-
From: Chris Albertson
Sent: Monday, January 23, 2012 8:40 PM
On Mon, Jan 23, 2012 at 6:07 PM, J. Forster j...@quikus.com wrote:
I think you'd want a slit, not a pin hole. The pin hole would be
better
Hi,
In response to several off-list queries, I contacted Roland Guilmet to see
if he still had any available.
In another development, a Group member has been able to change the
wavelength limits of the scan, without opening the unit, so two can be
paralleled to cover the visible spectrum.
I made a typo. the correct email for Roland is:
roland.guil...@yahoo.com
Hi,
In response to several off-list queries, I contacted Roland Guilmet to see
if he still had any available.
In another development, a Group member has been able to change the
wavelength limits of the scan, without
There are a couple of products you should look at:
3M made something called ScotchCal. I think the line has been sold, but is
still available.
Also, the MetalPhoto process can be done in a home lab.
I also think Staples can do it fairly cheaply from your 'puter files.
-John
===
Jim,
A few of the correct ferrite Common Mode Chokes on the lines would not
hurt. Also, use good quality coax, preferably with both a copper braid and
conductive foil to get near 100% shielding efficiency. Hardline is
probably better.
I'll ask about the best Common Mode Choke location. My hunch
I thought of that, but I know where Jim lives and copper pipes stiking
through a wall would gather condensation and ice on the inside because
it'd conduct the sub-freezing temps inside and maske a real mess. The
situation would be reversed in summer.
He could use PVC pipe wrapped with a layer of
Having faced that problem due to a medical screwup, I've since acquired a
number of Tektronix TM500 mainframes and modules. While it is not the very
latest stuff, it is very compact, capable, repairable, and mostly
inexpensive.
-John
==
There are many ham radio clubs in the
Can you post or send me a pic of the Teddy Bear?
-John
==
Well mine arrived Monday so about 3 weeks.
Its the one without the useless to me oscillator.
But I found it quite funny.
It came bubble wrapped, cheap shipper mail as expected and commented in
the
list.
But I have
Sounds like they are set up for pulse counting, witrh the last few dynodes
bypasses by caps.
-John
==
Thanks for all the help guys. I have enough info now to utilize any
of these PMTs. The /SQ and /SN1 suffixes apparently are custom
connection versions of the basic parts.
Was this message relayed through a probe out about 3 light-months?
-John
On 6/9/11 1:06 PM, J. Forster wrote:
Ha!
Nuclear power in space is poltically utterly impossible in the US. There
is huge opposition to RTGs, never mind even the thought of reactors.
Hmm.. when I
First off, try contacting the company. They are certainly still in the PMT
business. Try www.photonis.com or Google:
photonis -ebay
It might be a selected version of a standard PMT.
Their product line looks kinda like Burle, BTW. Definitely not Hammamatsu.
-John
I just
It's a sneaky way of raising taxes without seeming to raise taxes.
How much money is similarily wasted on prepaid credit or gift cards? You
either buy something more expensive and use the card for only part of the
bill, or just throw away the remaining money.
Either way, it's a scam.
-John
How do you propose to prove that in a court of law? Seize the cop's watch
as evidence? Somehow I don't think that's very likely.
You might be able to prove a parking meter is running fast (giving 50
minutes for an hour's pay) but a time of day? Unlikely, IMO.
-John
===
Le 02/01/2012
To me the ball drop/fireworks was different from the on-screen time on FOX
by a few secnds.
-John
=h
Hi folks,
Ignoring the travesty of a lyric change on John Lennon's classic song, did
anyone check to see if the clock countdown in Times Square was actually
accurate?
In times
I go the other way. Except for eBay, knowing the time w/in 15 minutes or
so suits me just fine. I neither wear a watch, nor carry a cell phone any
more.
-John
You expect *anything* to be accurate on Fox? :-D
I recently read an article about how the new thing is to have ever
On Sun, Jan 01, 2012 at 05:54:46PM -0800, J. Forster wrote:
To me the ball drop/fireworks was different from the on-screen time on
FOX
by a few secnds.
I was watching the media pool HD satellite feed on AMC-1 and
through a broadcast grade IRD (ex PBS Bitlink ) it appeared to be about
2
Could well be. The ball-drop guys could have been off too. I've no idea
who or why any were off. And it really doesn't matter much. In all
probability, nobody other than a real time nut cares anyway.
-John
On Sun, Jan 01, 2012 at 09:14:03PM -0800, J. Forster wrote:
I
But Chinese postmen (postwomen) get paid a lot less than USPS employees.
-John
But if you send something to China, who do you think pays for the delivery
there?
- Original Message -
From: Richard W. Solomon w1...@earthlink.net
To: Discussion of precise time and
I hope Customs is more worried about containers full of counterfeit and
pirated stuff, than a single electronc toy.
-John
=
Was it really a gift ?? The U. S. Customs folks take a dim view on folks
lying on a Customs Declaration.
But, being realistic, it's so rampant that only
This might be useful:
http://www.microwaves101.com/encyclopedia/wherenow.cfm
Try calling the current owner of Engelman Microwave.
-John
===
I have a number of RF mixer modules mounted in junk microwave IF
converter blocks. They are labeled MLP-102 in either KDI or EMCO
brands,
I suspect turret lathes are still used for shortish runs of some of the
simpler parts, like bushings and similar parts.
Not every shop looks like a NASA facility.
-John
==
On Sat, Dec 17, 2011 at 4:48 AM, Chuck Harris cfhar...@erols.com wrote:
Which works very well, but unlike
See attached .pdf on Iranian engineers.
-John
Javad Ashjaee.pdf
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You use the change gears in a ratio of 127:50 (254:100)
-John
==
Hi Don:
Sure converting lengths is easy and I have metric, English and weird taps
and dies, but how do you turn metric threads?
Have Fun,
Brooke Clarke
http://www.PRC68.com
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