Magnus,
That is why I said ". . . setup and properly adjusted . . "
BillWB6BNQ
Magnus Danielson wrote:
> WB6BNQ skrev:
> >Well Dick,
> >
> >Assuming it is setup and properly adjusted, it is absolute as a
> >frequency reference by "def
read it and gain an understanding of its fundamentals. There are
other publications that would be worth studying; if you want or need
those let me know as well.
73BillWB6BNQ
"Richard W. Solomon" wrote:
OK, dumb question time.
I have a few GPSDO's (Trimble
WB6BNQ wrote:
> Tom Van Baak wrote:
>
> > I have a old data device that is spitting out TTL data at 10 MHz.
> > There's just a data line (no clock) but the edges clearly indicate
> > an internal 10 MHz clock.
> >
> > I'd like to do a continuous capt
00Hz to 30MHz.
Look at the following URL: http://www.rfspace.com/SDR-IQ.html
BillWB6BNQ
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Hi TVB,
How about directly capturing it by reading one of the logic bits of the parallel
port ?
BillWB6BNQ
Tom Van Baak wrote:
> I have a old data device that is spitting out TTL data at 10 MHz.
> There's just a data line (no clock) but the edges clearly indicate
> an interna
Hi Mitch,
Sounds like you need a bigger dog ! (hi hi)
73BillWB6BNQ
MITCHELL JANOFF wrote:
> I'm in the process of connecting my Hahl clock to a GPS based standard. I've
> tested quite a few ideas for the Hahl clock and I found that what works best
> is the small &q
.
If you carefully disassemble RB frequency device you will have all the same
components, albeit on a smaller scale. Just add a magnifying glass and you got
it
! ! !
BillWB6BNQ
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Tom,
Don't forget to save a few squares !
BillWB6BNQ
Tom Van Baak wrote:
> This is an interesting T&F problem, actually. It depends what
> you mean by "it". If "it goes" means the paper itself -- if you
> pull at a constant linear rate then it
Brian,
Have you measured the voltages with a scope to see if it may not be a compliance
problem ?
BillWB6BNQ
"bjon...@mindspring.com" wrote:
> Nic - I have tried several of each... and even tried using the breakout
> box to create a crossover/null modem but no
given
length (within reason).
Just some thoughts.
BillWB6BNQ
Hal Murray wrote:
> > I really need to put in a feed through to the roof because my Z3801A
> > is struggling with an indoor antenna too; but the roof needs to get
> > replaced first...
>
> Speaki
Ulrich,
The problem is the software structure is different for the DS18S20. So the
Tbolt
would not know what to do with it.
BillWB6BNQ
Ulrich Bangert wrote:
> Mark,
>
> in this case the DS1620 may perhaps be exchanged against a DS18S20 which
> definitely supports the high
Corby,
My BAD ! I got as far as the word ISOTEMP and failed to pay attention to the
part number. Sorry about
that.
BillWB6BNQ
WB6BNQ wrote:
> Hi Corby,
>
> Took a while to find it, but I knew I had uploaded the data. Half way down
> this page from KO4BB's
Hi Corby,
Took a while to find it, but I knew I had uploaded the data. Half way down this
page from KO4BB's
site.
http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05)_GPS_Timing
BillWB6BNQ
Corby Dawson wrote:
> Hi,
>
> I bought an Isotemp OCXO36-54M a couple years ago on eB
Dave,
I would think the immigration people in the UK would probably have some idea in
that regard. At least it would not hurt to ask them.
BillWB6BNQ
Dave Ackrill wrote:
> Sorry for the off topic question, but my partner, Kate, is off visiting
> friends in Canada and USA on Friday
Another place to find it is in old Motorola two-way radio high power VHF
amplifiers. These amplifiers used a solid metal anode and the the tubes were
clamped
up against a beryllium block (white square about 3/4 inch) that was attached to
a heat sink.
BillWB6BNQ
Steve,
I am pretty sure he meant lifting off of the surface that the unit would be
sitting
on; i.e., the bench.
BillWB6BNQ
Steve Rooke wrote:
> 2009/1/12 Hal Murray :
>
> > You can get slightly better cooling if you turn it on its side/end, or lift
> > the fins off
e.
The lift pads we used were about 30cm in diameter. 1 psi (7kPa)
lifts about 50kg. Moving around 1 ton things with 4 pads wasn't
unusual.
The rougher the floor, the more airflow you need.
James,
Do you have any web sites that show such a contration using leaf
then you have
the ability to have a normal Email service account through AT&T.
So my question is why are you restricting yourself to such limited means as WEB
mail ? Particularly when better processes are available no matter how F-upped
Billy G and Microsoft are.
Bill....WB6BNQ
Mark Si
elf.
BillWB6BNQ
"Ed, k1ggi" wrote:
> Chris -
>
> To help avoid too much confusion, it needs to be pointed out that this 'E'
> notation gets used somewhat imprecisely in context, and you have to read
> "what they meant" rather than "what the
Bruce Griffiths wrote:
> WB6BNQ wrote:
> > Bruce Griffiths wrote:
> >
> >
> >> Magnus Danielson wrote:
> >>
> >>> Bruce Griffiths skrev:
> >>>
> >>>
> >>>> David C. Partridge wrote:
> >>&g
own. I'm sure Bruce can elaborate some on that.
> >
> > One possible issue would be that input impedance could mess things up.
> > So maybe one should consider making quadrature readings in the head such
> > that with some processing the propper level can be given considering the
> > impedance mismatch. For the intended repeatability this might be
> > something to consider.
> >
> > Cheers,
> > Magnus
> >
> >
>
> Since the oscillator is intended for oscilloscope scope calibration the
> leveling detector can operate with a fixed input level and an attenuator
> can be used to set the output level.
> A resistive splitter will have a wider operating frequency range than
> most alternatives.
>
> Diode detectors using a pair of matched diodes can be very stable.
> NIST once used an elaborate coaxial dual diode differential RF detector
> arrangement complete with temperature stabilisation.
>
> Bruce
What about some of the "log" detector made by Analog Devices ?
BillWB6BNQ
'
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Mike,
The biggest problem with Bruce's postings is that he does not leave any damn
space between the OLD data and his NEW data. So you spend an unusual amount of
time mentally separating what is going on. Very frustrating !
BillWB6BNQ
Mike Feher wrote:
> I am now, and actually h
,
unless I misunderstand something, it seems that there may have been a problem
with
tube from the start ? Out of curiousity, perhaps Corby can enlighten us on that
aspect ?
BillWB6BNQ
[EMAIL PROTECTED] wrote:
> Corby,
>
> AT what point would be approp to call symmetricom and complain about
a measurement method was followed. It does not necessarily
mean a direct comparison was made with NIST. Many people I have talked to have
a misconception wrapped around this phrase.
BillWB6BNQ
Ed Palmer wrote:
> Bill,
>
> I agree with the comments made by you and everyone else
it would take to do a Josephson array and still have money
left over to fund that divorce.
BillWB6BNQ
Ed Palmer wrote:
> It's nowhere near the idea of a Josephson array, but if a NIST-traceable 10V
> +-10uV reference is good enough to satisfy your voltage-nut urges, you can
&g
Bruce Griffiths wrote:
> 4) Obsession
>
> Bruce
Bruce,
I think you are confused. #4 is the name of a perfume !
Bill....WB6BNQ
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et quite complicated at times, but you can still grasp some form of
understanding from them. The spec sheets for various ICs have quite a bit of
educational value, especially from the better companies like Analog Devices,
Maxim and others like them.
BillWB6BNQ
Patrick wrote:
>
Yuri Ostry wrote:
> Hello,
>
> Sunday, November 2, 2008, 6:31:32, WB6BNQ wrote:
>
> W> Hi Yuri,
>
> W> Unless you need the longer term stability of an undisciplined Rb source, I
> think
> W> you would be better served to get one of the Timenuts group Trim
Magnus Danielson wrote:
>
> What else shines pink at all times when operated?
>
> Cheers,
> Magnus - lacks H-maser...
>
I think I will leave that one alone !
BillWB6BNQ
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To
GEEZ,
After all this discussion, it sounds like he should consider 2 Cs space devices,
one main and a secondary.
BillWB6BNQ
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Magnus Danielson writes:
>
> > Once doppler bin and phase has been achieved for each PRN
areful
measurement, extremely careful
adjustment and good records would allow it being used as high quality
portable standard if it is kept hot the
whole time during its use.
BillWB6BNQ
"Richard W. Solomon" wrote:
> I am confused (a normal state).
> Why would locking an exte
Yuri,
Sorry about that, but I guess the Trimble Thunderbolts are out of stock all
ready.
BillWB6BNQ
WB6BNQ wrote:
> Hi Yuri,
>
> Unless you need the longer term stability of an undisciplined Rb source, I
> think
> you would be better served to get one of the Timenuts
crystal oscillator would most likely last longer with fewer
problems. I have several +40 year old hp counters with decent oscillators still
operating.
BillWB6BNQ
Yuri Ostry wrote:
> Hello,
>
> Readed list archives and googled a lot, and seen two opposing points of
> view - one i
ty of the oscillator.
Of course, if you are a purist then nothing but the best is good enough.
BillWB6BNQ
Bob Q wrote:
> So why would they not show the same kind of jumps as plain OCXO's? Rick K.
> mentioned atomic standards avoid jumps.
> Bob Q.
> - Original Message
swers your question ?
BillWB6BNQ
Bob Q wrote:
> Do rubidium standards use an OCXO?
> Bob Q.
>
> - Original Message -
> From: "Rick Karlquist" <[EMAIL PROTECTED]>
> To: "Discussion of precise time and frequency measurement"
>
> Sent: W
properly write, whether it is a formal letter or an informal note. An
Email is a letter ! All the "do - dad" shorts for smiling and such
(none of which I have learned) allow people to forget how to describe,
more accurately with words,
Paul,
Send me a photo as well please. I have a Sulzer 1150 5MHz oscillator and am
curious if it looks the same.
BillWB6BNQ
[EMAIL PROTECTED]
Rob Kimberley wrote:
> Paul can you send me a photo of your oscillator?
>
> Cheers
>
> Rob Kimberley
>
> -Original Messag
nce device and much of that can be mitigated with careful record
keeping during its trip.
In the case of the "FMS" you mentioned, the only difference is the devices being
compared are not being moved. The same methodology still applies however.
BillWB6BNQ
_
test equipment is important?
>
> /tvb
Hi Tom,
Your absolutely right. The only two places that I can think of, off hand, would
be televison and RADAR (systems with multiple terminals).
BillWB6BNQ
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or FPGAs (for which I have no
knowledge) but much more effort dealing with the ADCs and such. Well seems that
way to me anyhow.
Mainly I was really trying to get people to see that it should be a group
effort. Otherwise you have 3 or 4 people duplicating the wheel so to speak. If
those 3 or 4 c
To clarify item 3
Item 3 came across unclear after reading it again. What was meant was a third
channel to compare either of the two mentioned House Standards to a third device
without interrupting the two primary control channels referred to in item 1.
BillWB6BNQ
a lengthy diatribe.
BillWB6BNQ
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Hi Neville,
In all seriousness, I thought the Rubidium physics package is heated for
reasons. Now that you are heat sinking it, what has happened to the current
draw
for the whole unit ? Or am I misunderstanding something ?
BillWB6BNQ
Neville Michie wrote:
> Hi,
> I hav
Hi Neville,
You said ". . . I mounted a12V 1 watt 40mm brushless DC ball bearing fan, . . "
Damn, is that thing turbo charged ?
BillWB6BNQ
Neville Michie wrote:
> Hi,
> I have just commissioned a temperature control for my LPRO rubidium
> oscillator.
> When I re
Bill,
Are you sure that they are not suppose to be there ? In otherwords like a
minor axis/division indicator ?
Just a thought.
BillWB6BNQ
wje wrote:
> The dot are aligned horizontally, only a single scan line per set of
> dots. However, this only shows up in graph mode, not
roups of these cubicles for access.
BillWB6BNQ
"Lux, James P" wrote:
> In a message dated 05/09/2008 05:23:56 GMT Daylight Time, [EMAIL PROTECTED]
> writes:
>
> Trivia: The engineer who designed that chip for HP 35 years ago has the
> cubicle next to me at Agilent
Hi Bill,
You're right there are two US stations on the HF band, WWV and WWVH. I was
generically referring to them both. Although in my mind I did not really think
of WWVH per se. In either case neither WWV or WWVH were not there in any
recognizable strength.
BillWB6BNQ
Bill Hawkins
Of course I have Googled and sure enough BPM is the Chinese time station.
Havent chased after QSL cards in a long time. This is one I sure am going to
request and see what happens.
Bill....WB6BNQ
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unately, I have not found a manual or
even a reference to it anywhere on the WEB or at surplkus
places offering books.
BillWB6BNQ
Dave M wrote:
> Phil,
> I'm a new subscriber to this forum. I saw that you have a manual for the
> Montronics 103A comparator. I have one of these an
ment. Not
likely possible.
BillWB6BNQ
Mike Monett wrote:
Bruce Griffiths <[EMAIL PROTECTED]> wrote:
> Max
> A capacitance bridge using a transformer would be a lot
more
> stable than merely using the capacitance to vary th
es it would not be a proper restoration at
that point.
BillWB6BNQ
WB6BNQ wrote:
Hello Russ,
Well, depending upon the size requirement of the thermal switch,
I
would consider trying to retro-fit. One company that makes such
things
is TEMP
data on the variable model and the one I was thinking of
(second item) which is the surface mount model.
BillWB6BNQ
Bill
WB6BNQ wrote:
Hello Russ,
Well, depending upon the size requirement of the thermal switch,
I
would consider trying to retro-fit
Mark,
I think you missed the point ! He was not necessarily trying to use it
as a frequency standard. He said he was trying to RESTORE it,
including making it work !
BillWB6BNQ
Mark Sims wrote:
The original thermoswitch sounds like is is a mechanical switch, so
for #1 or #2 questions, I would think
of those as a last ditch effort.
BillWB6BNQ
[EMAIL PROTECTED] wrote:
I am in the last stage of restoring a 1964 General Radio Frequency
Standard Model 1120-AB.
I'm having trouble getting the inner oven to work propoerly an
ompensated crystal oscillators easily handle that level. With care, a
crystal oscillator in a well designed circuit can reach parts in 10^-8
with a bit-bang oven control. HP did that in the late 1950's. From
that point the difficulty is logarithmic.
BillWB6BNQ
Phi
.
BillWB6BNQ
Mike S wrote:
At 05:42 PM 7/23/2008, Bruce Griffiths wrote...
>Another approach is to divide the 10MHz by 5^7 (78125) and then use
an
>
>injection locked multiplier chain to generate 32768 Hz from the
>resultant 128Hz output.
>It m
Analog Devices program after setting the filter factors.
I certainly am no expert but the Elliptical filter, which I have some
small familiarity with, seemed to be the best choice for the frequency
range.
BillWB6BNQ
References
1. http://designtools.analog.com/dtDDSWeb/dtDDSMain.aspx
Hi Bruce,
I looked at that also. Using OPERA browser I can zoom in really well and at
400 % you can just make out the trace under the coating and other stuff
obscuring the view.
BillWB6BNQ
Bruce Griffiths wrote:
> Jose Manuel wrote:
> > Hello all,
> >
> > I´d like
guess would be that the antenna might be working correctly.
So I would not be shorting anything out without getting a lot more information
first. Is there anyone else in your area that has such a system that you could
compare with ?
Good luck,
73BillWB6BNQ
Jose Manuel wrote:
> He
Did it occur to anyone that possibly these units where intended to be used in
some very cold country, like the top of Alaska or some similar place wheere a
little additional help was necessary ? ? ?
Just a thought . . .
BillWB6BNQ
Ed Palmer wrote:
> > Date: Sat, 19 Jul 2008 20:35:38
so either one can be used and stick out a panel.
Dave ? Dave ? Why are you unplugging my internet feee
BillWB6BNQ
"David C. Partridge" wrote:
> As I've mentioned before, I've been working on the design of a frequency
> divider to go with my TB.
>
>
Hi Phil,
Yes, I just got done with it. This unit looks very much like the TRACOR 527.
Quite nice !
BillWB6BNQ
phil wrote:
> Bill did you click on that "Download Specs" link on that page. A PDF of more
> detail.
>
> - Original Message -
> From: "WB
Phil,
I had never seen a picture before. The 103 is much more envolved than the 100A.
The 100A does not have meters, for example.
Thanks for the link,
BillWB6BNQ
phil wrote:
> Bill,
> For specs, Tucker Still sells it.
> http://www.planettest.com
output BNC's for driving a scope or chart machine,
etc..
When you get the chance, I, and I'm sure, others would appreciate it, thanks.
BillWB6BNQ
phil wrote:
> Bill,
> Just looked and it's Fluke/Montronics model 103A
> It's a big manual if I recall, about the same
your consideration.
BillWB6BNQ
phil wrote:
> Going from memory, I think it's a 103. Yes I have the manuals for all that
> stuff I have.
>
> - Original Message -
> From: "WB6BNQ" <[EMAIL PROTECTED]>
> To: "Discussion of precise time and fre
Hi Phil,
I am curious about your statement, below, concerning the separate Fluke
comparator. Is it the Fluke Montronics model 100 ?
If so, I have one of those and am wondering if you have the manual for it ?
Thanks,
BillWB6BNQ
phil wrote:
> Speaking of the 207, is there any demand
Bill,
The following URL should allow you to search the archives:
http://www.febo.com/pipermail/time-nuts/
BillWB6BNQ
wje wrote:
> Actually, one more question - is there any way to search the list
> archives? Either I'm blind, or there's not, or it's not obvious.
>
possible to use cascading DDS chips,
one providing the clock for the other.
What are the thoughts on such an approach ?
BillWB6BNQ
Ulrich Bangert wrote:
> Bruce,
>
> > Even a DDS followed by a PLL cleanup loop (10811 plus analog PD etc.)
> > should work well although wi
above suggested before on this forum. However, I do not know
what
receiver would fit the scenario.
BillWB6BNQ
Brooke Clarke wrote:
> Hi Rick:
>
> 10.23 MHz shows up in the ICD-200 spec on how the GPS signal is generated.
>
> I've got a GPS sig gen see:
> http://www.p
Gee Brooke,
If you made the picture any bigger it would not have fit on my screen.
73BillWB6BNQ
Brooke Clarke wrote:
> Hi Randy:
>
> Those appear to be the very common 14 pin dip IC oscillators.
> pin 7 = ground
> pin 14 = Vdd
> pin 8 = Out
> pin 1 may be no
Hi Jim,
I would have to look in the manual to be 100%, but for 90%, I think the
"synchronize" button is just to synchronize the 1pps pulse with an external
1pps reference. It is a clock
(i.e., time) function NOT a frequency function.
BillWB6BNQ
"Palfreyman, Jim L"
vided resolution.
Accuracy addresses how well a measurement coincides with an acceptably
understood
and agreed upon reference.
BillWB6BNQ
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Stanley,
We will be looking forward to schematics and full firmware listing by next
Friday.
73BillWB6BNQ
Stanley Reynolds wrote:
> Update the receiver is working not sure if it is decoding time but powered it
> up and was able to hear WWV.
>
> (1) Brown R14 100K to B+
&
rmat
>and another link to describe the rest of the modulation format. The
>modulation format will give you the blueprint that your receiver follows to
>derive its functions. Other menu selections are interesting
to, such as their history page.
Good luck,
BillWB6BNQ
Stanley Reyno
d.
Sure, you
can adjust the accuracy of this singular standard, but how long is it
going to
stay there ? If the accuracy of the adjustment doesn't stay put, then
that
adjustment means little.
So, the question is how do you make a stand-a-lone standard more
accurate the
d. Sure, you
can adjust the accuracy of this singular standard, but how long is it going to
stay there ? If the accuracy of the adjustment doesn't stay put, then that
adjustment means little.
So, the question is how do you make a stand-a-lone standard more accurate the
WB6BNQ
Brian Kirby wrote:
> The Motorola Timing 2000 and 3000 antennas are patch antennas. They
> have a pointed radome. The have very little ground plane, which reduces
> reception near the ground, which is desirable because of multipath
> effects.They also have quite a bit of f
FM and perhaps other modes.
Don't forget that WWV also transmits on 2.5, 5 and 15 MHz. 15 MHz is good
during
mid day and 5 MHz is quite good at night time. 2.5 MHz is only good at night
and
a little tough to copy unless you have a good antenna or are living quite close
to it.
BillWB6BNQ
By the way,
If you do get a Garmin 15, make sure it is the "H" or "L" model which has WAAS.
The
regular model "15," which is cheaper, does not have WAAS.
BillWB6BNQ
WB6BNQ wrote:
> If you go to the Garmin web site and look at their OEM page, you can or
n GPS unit developed a
failure. I was using my main unit to drive my laptop software for mapping
purposes. The Garmin 15 will replace it.
BillWB6BNQ
Hal Murray wrote:
> > The GPS 18 from Garmin is ~130 list, since ti comes with some software
> > for a laptop.
>
> You want th
dollars. If you invest in a nice 8662A instead -- or even an 8640B! -- you
> can use your *existing* 8596E to make measurements 30-40 dB below what even
> the 8560E series can do.
>
> --- snip ---
>
> -- john, KE5FX
Hi John,
How does a HP-8660C compare to the HP-8662 and H
Hello Randy,
Can you give more information on the equipment you are trying to calibrate ?
For example the make and model
and what level of accuracy you expect to reach. What is your intended use of
this equipment, i.e., general
hobby use or more serious purposes ?
BillWB6BNQ
Randy
Hi Mike,
Thanks for the explanation. As I do not own a "reciprocal" counter, I was
unfamilar or had forgotten the issue you described. "Reciprocal" was the
missing
link !
BillWB6BNQ
Mike Feher wrote:
> Bill -
>
> Sorry if I was vague. I am assuming that
solution by being slightly
lower then or any loss by being higher then some arbitrary point.
For the sake of the less skilled that might be on the list -server, could you
explain in more clear detail what you were eluding to ?
Thank you ... BillWB6BNQ
Mike Feher wrote:
> Bob -
>
> W
have, somewhere, the actual paper
article about the second one with schematics, etc..
BillWB6BNQ
Hal Murray wrote:
> > Here are 3 Hewlett Packard appnotes that are in the same vain as the
> > NBS 140 booklet. In many ways these HP items are better written. The
> > first
shelf.
http://cp.literature.agilent.com/litweb/pdf/5989-6171EN.pdf
http://cp.literature.agilent.com/litweb/pdf/5989-6183EN.pdf
http://cp.literature.agilent.com/litweb/pdf/5989-6247EN.pdf
BillWB6BNQ
WB6BNQ wrote:
> Hi Ronald,
>
> This list server is composed of three general c
spending money and physical effort that may not be necessary, please read
through the 3 above references to determine if you really want to get involved
to the
level of additional hardware and expense.
BillWB6BNQ
Ronald Held wrote:
> Since the moving option is out, perhaps I need to in
ous measurements, so don't this at home. I find that completely
disingenuous.
BillWB6BNQ
Bruce Griffiths wrote:
> John Miles wrote:
> > What are some of your favorite low-noise regulators? When I made the remark
> > about the uA723, I was specifically thinking of its perfo
eap) oscillator locked to the
GPS provides the basics allowing for very inexpensive counters and other
inexpensive devices to provide a degree of comfort.
BillWB6BNQ
"Michael J. Dyer" wrote:
> I've been researching an entry-level system for my own learning and
> expe
needed. Or it
became way too passionate and scared him off.
Well Eric, what say you ? ? ?
BillWB6BNQ
Eric Fort wrote:
> I'm looking for a fairly basic, relatively simple 10 Mhz PORTABLE
> reference (probably quartz based) with enough stability over a period
> of a week of outdoor
quiet" drive source.
BillWB6BNQ
Eric Fort wrote:
> I'm looking for a fairly basic, relatively simple 10 Mhz PORTABLE
> reference (probably quartz based) with enough stability over a period
> of a week of outdoor temp extremes to keep a 47Ghz transmitter locked
> with
should be up front and put
their own name on the
product instead of those who they copy.
BillWB6BNQ
Chuck Harris wrote:
> Hi Bill,
>
> I guess it depends on what you think it is that the market is
> desiring.
>
> There is little or no apparent interest in a newly manufactured
some extent and are not paying attention to the
market.
BillWB6BNQ
Chuck Harris wrote:
> The Spaceview is the Accutron model that everyone seems to want (even I want
> one),
> so much so that the Chinese are now making the necessary reproduction parts to
> convert a model with a
pages worth looking at as a
starter. The first would be the "LORAN-C User handbook" and then the "LORAN-C
Signal Spec" links.
BillWB6BNQ
Didier Juges wrote:
> I get this (see picture) with the spectrum analyzer and my wire antenna.
> That looks a lot cleaner than
e line shift using a DC source adjusted to the same level of the
AC
signal on the scope screen. With careful comparison you could do a little
better
then 3 %. That may be all you need to "check" yourself for sanity.
BillWB6BNQ
An old, used and tired EX-metrologist
Joe McElvenne
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Hi Brook,
You could try using a 74123 (or newer variants) retriggerable one shot to extend
the pulse width to a level that would allow you to see it on the scope.
BillWB6BNQ
Brooke Clarke wrote:
> Hi:
>
> Whi
isters to a static register loaded with the wanted value. This loop was read
to just -1x10^6. With this scheme the granularity is obviously the +/- LSB
count, not counting the time base error.
BillWB6BNQ
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the
counter to your GPSDO box if there is not enough room for the GSPDO parts
inside.
BillWB6BNQ
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Hi brooke,
The Windows control program link did not work. Can you explain, a little bit,
about the program on your web page, besides here.
thanks
73BillWB6BNQ
Brooke Clarke wrote:
> Hi:
>
> Scott will co
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Tom,
Very interesting concept ! But I do not think the business world is going to
buy it.
BillWB6BNQ
Tom Clifton wrote:
> Just to stir the pot a little - I'm providing a link
> to Discover magazine - a tome of g
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