SayRosa may be long gone but a lot of their IP went over to Wayne Kerr and
some is still produced to this day, the 257 automatic modulation meter is
one I think.
On Sun, 10 Jun 2018 at 20:31, gandalfg8--- via time-nuts
wrote:
> Perhaps not a very common item, and probably restricted to the UK, b
t on
> it working without some significant effort. The price is right though.
>
> Bob
>
> > On May 25, 2018, at 10:21 AM, Clint Jay wrote:
> >
> > Just spotted on eBay, a rather sorry looking GNS-500A Rubidium standard,
> > it's not expensive and is up for b
Just spotted on eBay, a rather sorry looking GNS-500A Rubidium standard,
it's not expensive and is up for best offer, May or may not be of use to
someone?
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
Is it worth buying for that money if it is?
On Mon, 21 May 2018 5:13 pm Dan Rae, wrote:
> On 5/21/2018 8:24 AM, Clint Jay wrote:
> > Found on eBay with no further information, can anyone identify?
> >
> >
> https://www.ebay.co.uk/itm/EX-MOD-Motorola-Antenna/32317797
Found on eBay with no further information, can anyone identify?
https://www.ebay.co.uk/itm/EX-MOD-Motorola-Antenna/323177970249?hash=item4b3ee87a49:g:tHIAAOSwUCZavUAe
--
Clint. M0UAW IO83
*No trees were harmed in the sending of this mail. However, a large number
of electrons were greatly inconv
Interested to know how much noise would be from USB signalling and how much
is " machine noise" from the PC as my understanding of USB signalling is
that it's differential so such should be low noise?
I'm also not sure I've ever seen a non screened usb cable?
On Fri, 18 May 2018 1:17 pm Dana Whi
I'm all for anything that encourages whisky growth
On Sun, 13 May 2018 12:16 pm Dana Whitlow, wrote:
> Flux can provide just the right kind of ionic leakage path that leads to
> whisky growth
> and eventual sudden shorts.
>
> Dana
>
>
> On Sun, May 13, 2018 at 12:23 AM, Hal Murray
> wrote:
>
>
Why not try one, the 74HC4046 is pin compatible I think, you may need to
make some changes to use the '7046 version but you can then make a value
judgement if the flaw had in fact mainfested itself as a problem in your
design?
On 18 April 2018 at 09:04, donald collie wrote:
> I have 4 frequency
Sad to say I think I was right, the listings have been pulled already and
the seller now has zero items for sale.
Get those paypal refund cases logged.
On 10 April 2018 at 15:13, gandalfg8--- via time-nuts
wrote:
>
>
>
> Is this auction # 273145006434, actually showing at $9.77 here in the UK,
Ahh, I've found the listing, has anyone received one?
I hate to say this but I'm highly sceptical that they will ever turn up,
looks and smells very much like the standard eBay scam to me.
On 10 April 2018 at 14:52, Bob kb8tq wrote:
> Hi
>
> Simple answer is that the “simple” approaches don
If it's not restarted after a power down and there's no 'ticking' sound
from it then it's likely to be a problem with the bootstrap supply,
switchers will run for years once they're running but while they're running
the small capacitor (of the order of 47uF) and the resistor that feeds it
(often 22
It looks rough, there's a cesium standard for sale in the UK, time nuts
member perhaps, that's sat at a quarter of the price, I know which I'd buy.
On 24 Feb 2018 10:46, "George Atkinson via time-nuts"
wrote:
> There is one on UK ebay at the moment but its not being given away. From
> the one pa
Then Africa.
On 22 Feb 2018 22:42, "Bob kb8tq" wrote:
> India
>
> > On Feb 22, 2018, at 5:37 PM, Van Horn, David backcountryaccess.com> wrote:
> >
> >
> > "Some of you are to young to remember when Javanese products were
> considered junk same storyBert Kehren"
> >
> > I've lived through Japan
> pictures of the label? That way those (not I) who can read Chinese might
> spot something that allows a search to proceed.
>
> Bob
>
> > On Feb 13, 2018, at 11:06 AM, Clint Jay wrote:
> >
> > Sounds like a drop shipping operation, they've found a supplier in C
tq" wrote:
> Hi
>
> That can be a bit harder if the labels are all in Chinese. Maybe posting
> pictures of the label? That way those (not I) who can read Chinese might
> spot something that allows a search to proceed.
>
> Bob
>
> > On Feb 13, 2018, at 11:06 AM,
Sounds like a drop shipping operation, they've found a supplier in China
who is willing to send goods either in plain wrapping without any supplier
name or the name of the agent who's selling it. It can be useful to Google
anything that looks like a part number on the packaging, you'll often find
t
Perhaps of interest to the list
https://www.theregister.co.uk/2018/01/25/microsemi/
--
Clint.
*No trees were harmed in the sending of this mail. However, a large number
of electrons were greatly inconvenienced.*
___
time-nuts mailing list -- time-nuts
Seconded on the Andy Talbot suggestion, iirc he has almost exactly what you
need
On 14 Dec 2017 17:19, "Dave B via time-nuts" wrote:
> Take a look at Andy Talbot's page at...
>
> http://www.g4jnt.com/Synthesizers.htm
>
> Lots of good options there for that sort of thing.
>
> 73.
>
> Dave G0WBX.
I think maybe you might have meant the AD9835 ?
Anyway, there are plenty of code examples out there, do you have a
processor in mind or are you free to use whatever is suggested?
On 13 Dec 2017 20:03, "Richard (Rick) Karlquist"
wrote:
> I need a very simple controller to tune a DDS with up/do
I was thinking the same as Azelio, I had a Racal 04B OCXO which refused to
start until I reseated the crystal in the socket. After that, well, it's in
almost daily use as a reference in a 1992 counter and has never stopped
since.
On 17 Oct 2017 07:18, "Azelio Boriani" wrote:
> The crystal is soc
It's a very standard supply, RS do them for instance:
http://uk.rs-online.com/web/p/embedded-switch-mode-power-supplies-smps/4557639/
There are plenty of uncased ones for a lot less if you're willing to do
some metal bashing.
On 4 October 2017 at 22:20, Lists via time-nuts wrote:
> I should
Hi Chris, if it's not blowing fuses and you're sure you've got all the
capacitors ( low value ones in the primary specifically) then check all the
high value resistors on the primary and continuity from reservoir capacitor
to switching transistor.
The average SMPSU usually doesn't deviate wildly f
Yes.
An instrument with a calibration certificate is not necessarily accurate
but it's inaccuracies are known and can be compensated for (but only to the
accuracy of the calibration reference of course.)
On 17 Sep 2017 17:39, "Magnus Danielson" wrote:
> Hi,
>
> The word "calibration" is overl
I do enjoy the 'chase' of repairing things other people have discarded as
beyond economic repair, my CMU200 came with a rather amusing fault as well
as a good example of poor industrial design choice, it's now a very useful
piece of equipment.
I often scrounge faulty electronic equipment just for
Experience has shown me that you can reasonably purchase good, working test
equipment that's well within calibration tolerances if you are buying the
more 'common' equipment, 6.5 digit meters, frequency counters, even a
Stanford SR620...
I've been very lucky with those, two spectrum analysers and
It's been interesting watching the various web SDRs the afternoon and
seeing the HF bands go silent.
They were recovering a short while ago but I will keep a corner of my eye
on them for the rest of the day
On 7 Sep 2017 5:57 pm, "jimlux" wrote:
> On 9/7/17 8:35 AM, David G. McGaw wrote:
>
>> N
on, 14 Aug 2017 10:26:13 +0100
> Clint Jay wrote:
>
> > That it can "so easily" be spoofed (it's not a trivial hack to spoof and
> > would, as far as I can see, take good knowledge of how GPS works and
> skill
> > to implement) is worrying and it could have
I guess it would depend on the level of infrastructure available to the
attacker, clock distribution is a reasonably well solved problem isn't it?
There would, I suppose also be the issue of receiver swamping, you could
monitor received signal levels as it's my understanding that the signals
from
Oh definitely and if I was going to cheat at Pokémon then that'd be the
most cost effective method (yes, I play, my 9 year old son insists) but I'd
rather have the "fun" of actually catching them the proper way
On 14 Aug 2017 12:08 pm, "Martin Burnicki"
wrote:
&
No, this was not the software hack, it was done with some rather nice
Rohde&Schwarz test equipment.
On 14 Aug 2017 10:42 am, "Martin Burnicki"
wrote:
> Clint Jay wrote:
> > Absolutely, their use of it was for something trivial and my reason for
> > using that ex
n't a turnkey solution available to anyone who has the funds.
On 14 Aug 2017 10:04 am, "Martin Burnicki"
wrote:
> Clint Jay wrote:
> > It might have been a hoax but I'm sure I saw it demonstrated by a couple
> of
> > students who used it to fool Pokémon go...
It might have been a hoax but I'm sure I saw it demonstrated by a couple of
students who used it to fool Pokémon go...
On 14 Aug 2017 8:27 am, "Martin Burnicki"
wrote:
> Clint Jay wrote:
> > Didn't someone demonstrate this using some rather expensive but 'off
Didn't someone demonstrate this using some rather expensive but 'off the
shelf' Rohde & Schwarz lab gear a year or so ago?
On 12 August 2017 at 22:23, John Allen wrote:
> FYI, John K1AE
>
> -Original Message-
> From: YCCC [mailto:yccc-boun...@contesting.com] On Behalf Of ROBERT
> DOHER
Well that's handy to know, I've got a box of those I picked up from a
hamfest. I'll have to dig them out and test them
On 12 Jul 2017 2:55 pm, "Pete Lancashire" wrote:
> I may have more of replacement Motorola GPS receiver modules. I had been
> sorting out stuff in storage
> and ran across some
Ooh, I forgot the Neutrik range, haven't used those for years.
Excellent quality and not horrifically expensive
On 22 Jun 2017 3:11 pm, "Clay Autery" wrote:
> OK I was wrong... Attila was right. IF we are going to talk
> alternatives and not simply bash PP cons, then I'm in. Always up fo
al
> application. They are used to connect pads to Automatic External
> Defibrillators. In that application, the two poles (15A, red & white) are
> glued together rather than using the roll pin.
>
> Bob
>
> > On Jun 22, 2017, at 08:29, Clint Jay wrote:
> >
> >
It is possible to get hold of locking barrel connectors, they insert as
normal and a quarter twist fastens them in place. The plugs and sockets are
compatible with non locking equivalents too.
Of course they're not great for applications that need a decent amount of
current and other disadvantages
A little extra heater voltage and allowing the tube to 'cook' a while can
help as can a CRT rejuvenator but the cathode is usually tiny on a mono
tube and from experience with television repairs back in the dawn of my
career, they very rarely last any length of time after rejuvenation before
emiss
t an experimental modification to
> increase the robustness and usefulness of the OFS-1 here:
> http://dabbledoo.weebly.com/halcyon-ofs-1.html
>
> Best regards
> Ole
>
>
>
> Den 19-06-2017 kl. 17:15 skrev Clint Jay:
>
>> Mine is somewhat different to that model, the cas
> locking chain. If a micro is involved then things get fuzzy fast. Anyhow
> > good luck with you digging in.
> > Regards
> > Paul
> > WB8TSL
> >
> > On Mon, Jun 19, 2017 at 8:27 AM, Clint Jay wrote:
> >
> >> Thank you Stephen, Nigel,
If it's just locking to the carrier I wonder if it'd be possible to use a
suitably modified PICDiv clocked from a 'standard' 10MHz GPS locked device
like the Lucent?
On 19 June 2017 at 14:19, GandalfG8--- via time-nuts
wrote:
> I suppose a converter from 198KHz could be an option but I know of a
On 19 June 2017 at 11:54, Stephen Tompsett (G8LYB)
wrote:
> I have a little Halcyon information I managed to find a few years ago
> when I acquired a couple of PFS units. It includes a brief document on
> OFS alignment.
>
> I'll mail the documentation to you directly...
>
&g
I have been given a Halcyon Electronics OFS1 standard which seems to work,
it's a version that has 198KHz and 162KHz selector on the fron and after a
reasonable period of time it displays 'lock' and gives a nicely stable 1,10
and 10 MHz output on the front panel BNCs, (I know, it should be 1,5 and
There's a few 'OCXO' designs out there, I'm not qualified to comment on the
timenutty quality of them but someone else mentioned Hans Summers offerings
and I would offer Roman Black's simple design (if it's not been mentioned
already):
http://www.romanblack.com/xoven.htm
I've no idea if it's usef
Congratulations, I was mulling over buying it, even just for resale if the
Rb standard worked its worth way more than the asking price, looking
forward to seeing the results of testing.
On 12 May 2017 9:18 am, "Iain Young" wrote:
> On 12/05/17 07:23, Gregory Beat wrote:
>
> As noted by Bob Camp,
Yes, Bletchley is a good day out but be aware the national museum of
computing is a separate entity and has its own entry fee.
On 27 Apr 2017 12:00 pm, "Dave B via time-nuts" wrote:
> On 26/04/17 17:00, time-nuts-requ...@febo.com wrote:
>
> > Message: 12
> > Date: Wed, 26 Apr 2017 15:05:52 +0200
Greenwich as recommended by others is a must, the science museum is also a
good way to spend a day.
Cheap and London don't necessarily go hand in hand unpess you go d hostel
style accommodation or perhaps even youth hostels?
I can recommend the New Linden hotel near Notting hill gate from recent
The clocks in my car have been set by the RDS data, DAB data or GPS in the
last five or six I've had. Drift is a thing of the past as long as i listen
to digital radio or the BBC on analogue FM, if i listen to neither then the
clock drifts a couple of seconds a month but it syncs right up withing a
y be using an FPGA programmed as a divider to provide the output
> frequency.
>
> BillWB6BNQ
>
>
> Clint Jay wrote:
>
> Yes, in the 5650 there's only DDS on opt 58, in the 5680 there is one in
>> the main loop too, my bad for not being precise/muddled.
>&
Yes, in the 5650 there's only DDS on opt 58, in the 5680 there is one in
the main loop too, my bad for not being precise/muddled.
On 10 Jan 2017 01:43, "wb6bnq" wrote:
> HI Bob & Clint,
>
> If you look at the second message of this thread, I attached the manual
> that applies to Option 58. L
Option 58 in a FE Rb is an additional sub board which has nothing to do
with the physics package control loop.
In an option 58 Rb there are two DDS chips.
On 9 January 2017 at 17:48, Scott Stobbe wrote:
> It very well could be. Based on Marks comments, it sounds like the DDS tone
> after bei
hard (Rick) Karlquist"
wrote:
> On 12/7/2016 12:16 PM, Clint Jay wrote:
>
>> I was looking for a low noise regulator to power a log amp/detector
>> earlier
>> this year and was rather surprised to find the 78xx regulators were
>> considerably better than many of the
I was looking for a low noise regulator to power a log amp/detector earlier
this year and was rather surprised to find the 78xx regulators were
considerably better than many of the "low noise" devices.
But!!
I've also had odd experiences with some brands of 78xx devices (and way
before the 'net w
Raspberry Pi compute module? Maybe even a Pi Zero?
On 30 Nov 2016 21:47, "Adrian Godwin" wrote:
> The tiny g3 routers are worth looking at. They have WiFi, Ethernet and USB,
> cost very little and will usually run wrt54g Linux. Can be rather short on
> memory though.
>
> On 30 Nov 2016 8:43 p.m.
Might be worth popping over to the GQRP mailing list and asking, there are
a few enthusiasts there but wireless set no. 7 makes it sound like they
were from a military radio.
On 26 Nov 2016 13:00, "Adrian Godwin" wrote:
> I bought some old crystals on ebay :
>
> http://www.ebay.co.uk/itm/1
Given recent discussions of IoT, NTP and wall clocks, this may be of
interest
http://www.theregister.co.uk/2016/11/23/ntp_patch_time_rolls_around_again/
And the vulnerabilities:
http://www.kb.cert.org/vuls/id/633847
--
Clint.
*No trees were harmed in the sending of this mail. However, a large
I thought the same at first, but then I thought a little more, it may not
be time nut standards of accuracy but...
It's possible to buy ESP8266 modules for a couple of pounds, they will run
NTP, if you want to go up market then a Pi Zero.
Hooked up to a cheap DS1307 module or one of the higher st
Don't forget power line networking equipment but just because one
interference source is tolerated or in order by the authorities doesn't
mean it's ok to create another.
Those switchers and even the hardware they power (I'm thinking of satellite
receivers which spew all sorts of hash over HF bands
Found it.
There was an article by Andy Flind in a UK electronics magazine, EPE
December 2001 which detailed an MSF repeater to overcome a problem with
60KHz time signal reception.
Shouldnt be bothered by the signal format as I remember it being a very
simple design.
As others have pointed out,
Yes, there are projects that will generate the relevant signals but you
have to be absolutely certain that the signal will not 'leak' and affect
clocks you don't own.
Which may not be as easy as it sounds, it's amazing just how far a couple
of milli watts of RF can travel.
On 10 Nov 2016 12:2
I should also have added, it may be better to work out a repeater scheme
where an externally mounted antenna re-radiates the received signal inside
your home.
On 10 Nov 2016 12:21, "Peter Reilley" wrote:
> I have a few of those "atomic" clocks that receive WWVB to set the time.
> However since
Definitely, for a proven bad or dirt cheap leaded part when the board is
valuable cut the legs. gives you an added advantage when removing the part
as well as you can apply heat to both sides of the leg if it's through
hole.
On 5 November 2016 at 21:56, Mark Sims wrote:
> Tom's method is what I
Heating one end and adding a little solder to the joint will allow you to
lift the cap, the leads are folded over tabs so they'll bend nicely and
allow the cap to lift, once you've got one end lifted, heat the other and
it will come away easily.
Clean up the pads with solder wick then you're go
I own a 5680b and while it only outputs a PPS signal there is a very stable
30MHz signal available inside the unit IIRC.
I can dig mine out and find the signal if that's of use?
I believe they can be modded for 10MHz output on the 15p D type but I've
just not managed to find time to get around t
While I've no need for such accuracy in my little home workshop, I
*really* would like a Cs standard, just because.
The Rb and GPSDO are more than adequate for my needs but I can understand
(and, for now, manage to resist) the addiction to accuracy and find it
fascinating that such results can b
There's a sectioned Cs tube at the science museum in London, sadly I can't
see the pics you link to but I'd be interested to see if they're the same
as that exhibit (I think I have a picture somewhere)
On 31 Oct 2016 20:54, "Skip Withrow" wrote:
> Hello Time-Nuts,
>
>
>
> I recently acquired a
I am peeking in as a mere amateur and that article hurts my brain, I cannot
imagine how hard some folk here must be battering their heads against their
desks.
Oh, and it's not the first either, this one was a year prior...
http://www.theregister.co.uk/2013/05/01/hoptroff_shows_first_atomic_watch_
I think those voltage reference ICs have been done to death over on EEVBlog
and the general consensus is that they work very well, the only counterfeit
part is the 'calibration' sheet that comes with them, they seem to be done
on a photocopier.
They also appear to exceed the accuracy specification
What's being transmitted?
If it's a repetitive message would it be possible to inhibit transmission
using an external time source, perhaps a PIC or even a Pi inhibiting the
"PTT", leaving the windows box in control of what's transmitted or do the
Windows boxes have to communicate with each other v
Ah, these are the LM723 based linear supplies, Lambda Coutant made
variants as did Farnell, they're renowned as high reliability, low noise
supplies.
There are schematics out there for the variants but they're all extremely
similar if not identical.
I think I may even have a couple of origina
Interested to know if anyone has done this with a ublox receiver, I
spotted the option in some of the technical documents and went as far as
finding a stockist for the external DAC I think it'd need.
On 17 Aug 2016 22:02, "Mark Sims" wrote:
> The Ublox modules (at least some of them) can suppor
I'll throw Designs Park into the mix, it's a free program from RS
components and I *think* it generates gerber files.
I've used it for a couple of boards and got a grasp of it on a quiet
afternoon.
On 13 Aug 2016 16:05, "William H. Fite" wrote:
> For me, the ideal solution is an eyeglass-mount
I doubt it's worth mentioning that a random SMD footprint cut from a larger
board and some of the currently available eBay SMD adapter boards may have
plated through holes which could short if used to prototype on copper clad
board so it's worth paying a little attention to insulating the
'undersid
Tomtom had custom voice capability for sat nav years ago, seems to have
disappeared now but I can, from personal experience, confirm how quickly
John Cleese giving 'funny' directions becomes annoying.
On 8 Aug 2016 16:02, "Artek Manuals" wrote:
> On 8/8/2016 7:28 AM, Morris Odell wrote:
>
>> H
I've used the wiznet module, these days I'd consider the esp8266,
powerful little module that can be had for a couple of dollars complete
with WiFi capabilities and enough GPIO to interface GPS and some sort of
serial nixie interface.
On 12 Jul 2016 20:11, "Vlad" wrote:
>
> In addition, even MCU
No, my experience with Chinese sellers, even when you file a "not as
described" case, is that eBay will require you to return the item at your
own expense if the seller has stated they will not pay return shipping.
Ebay's attitude was that the seller could just state in their item
description
shed by a local enthusiast
> for David. He did a good job because I believe he had no access to any
> documents or circuits. I tried to find some information but it would seem
> the archive has been lost (vandals !!) It probably contains strange things
> like neon ring counters :-))
&
They also have TIM the speaking clock which has a rack mounted atomic
standard.
On 5 Jul 2016 21:01, "John Dalziel - crashposition"
wrote:
> I would also recommend the Worshipful Company of Clockmakers collection at
> the Science Museum. It’s a great collection and they have some of
> Harrison's
There is also the RSGB exhibition station at Bletchley which has some nice
radio principles demos
On 5 Jul 2016 08:45, "Attila Kinali" wrote:
> On Mon, 4 Jul 2016 19:01:45 -0700
> Bob wrote:
>
> > but also to Bletchley Park (just a short train ride outside London) and
> > Bletchley Park was easi
Some of the cheap gigabit network cards can and with surprising accuracy
On 29 Jun 2016 22:02, "Gary E. Miller" wrote:
> Yo Hal!
>
> On Wed, 29 Jun 2016 12:28:50 -0700
> Hal Murray wrote:
>
> > bro...@pacific.net said:
> > > At one point they were looking into making a GPS time receiver
> > > wh
Life is so much easier now, dirtypcb is a great service, I have a pile of
boards here from them which are far greater quality than anything I could
hope to produce at home or even in the lab I used to have. They're also
better quality than any of the local board houses I used in the past.
Havin
Just throwing this into the lion's den.
https://www.elektormagazine.com/labs/gps-assisted-10-mhz-frequency-reference
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow
It would seem so bit I don't remember seeing a 'reset' chip in the 5680.
I'm wondering if there's scope to add one onto the rail that runs the PSD
and 80C320 to keep it in reset.
On 9 Jun 2016 13:00, "Bob Camp" wrote:
> Hi
>
> Based on the number of different ways there seem to be to corrupt the
Sounds similar to the issues you encounter with Atmel and some other
EEPROM/Flash based MCUs when they're not held in reset until VCC becomes
stable.
http://atmel.force.com/support/articles/en_US/FAQ/Prevent-EEPROM-corruption
Some more info:
http://www.embedded.com/design/prototyping-and-develop
To my simple mind they'd be out but by a constant amount because they're
still locked to one master clock. The discrepancy would be from the "time
of flight" between the top and bottom of the mountain.
Or I may have completely misunderstood.
On 20 May 2016 17:01, "Peter Reilley" wrote:
> I h
They use a WSI/ST chip, the PSD813 which is a system chip, it contains
Flash ROM, RAM and peripherals, it's programmed via JTAG.
I'm very interested in obtaining either boards from or complete faulty
units as I believe there's a possibility that these units are configured
with various options bein
Very handy, I've picked up a few Oncore receivers recently and was
planning to test them all and then replace the batteries in the good
ones. Has anyone worked out what the original charge circuit schematic is
though?
On 25 Apr 2016 13:01, "Pete Stephenson" wrote:
> I have several 5V Oncore UT+
That 232 chip should run at near as damnit ambient so I'd say it's highly
likely to be dead.
Replacement should be a doddle
On 25 Mar 2016 19:02, "Ryan Stasel" wrote:
> All,
>
> I recently got an (obviously used) Trimble Thunderbolt (case says Rev B).
> Hooking it up to my bench PS, I got the un
Would it be possible they could be uploaded somewhere as a torrent file?
On 9 Mar 2016 10:00, "walter shawlee 2" wrote:
> I was trolling for old data catalogs, and found some great and VERY useful
> data and app books for National, TI, Signetics, GE, DATA, Alpha, Mullard,
> RCA, etc. Everything
You can have things made anywhere in the world if you pay some Chinese
factories enough.
On 3 Mar 2016 16:01, "John Green" wrote:
> I noticed some US made ones on the auction site for cheap. They say they
> offer a 30 day money back guarantee. Hmmm
>
> On Thu, Mar 3, 2016 at 12:27 AM, gonzo . w
I have to say, I'm hugely impressed by the Aeroflex 3413 I've bought and
Cobham's customer service response has so far been excellent but I suspect
it will be far too expensive for me to buy repair parts which is a shame.
On 13 Feb 2016 09:14, "Dave Brown" wrote:
> Cobham is a UK based defence a
Generally, whenever I've had a non manufacturer 'calibration' it's been a
certification service that tells you your equipment is within spec and
gives you the variances and probability of uncertainty, a pass/fail test.
Where equipment was out of spec then any service to bring it within spec
was u
I've acquired from eBay a 'faulty' Aeroflex IFR 3413 signal generator with
Option 001 (no attenuator) and an error 509 which I think would indicate
it's had power applied to the output port.
Does anyone have service information for these generators?
I'm also looking for firmware upgrades and any
I would imagine it was much less expensive for HP to gut second hand
equipment and re-qualify it than restart a fab or qualify a new design
front end.
On 25 Jan 2016 16:01, "Bert Kehren via time-nuts"
wrote:
> Getting back to the original question, years ago I was told but could not
> confirm tha
Do tantalum then benefit from being 'reformed' in a similar fashion to wet
electrolytics?
Do they recover from moisture ingress by baking in a similar fashion to SMD
chips that have been stored incorrectly?
On 20 Jan 2016 14:10, "Bob Camp" wrote:
> Hi
>
>
> The only thing I would add to that is
That's a very happy coincidence and one I'd hoped to hear.
The pictures in the auction seem to show a lack of tarnish on the Ref Out
and Ref In BNCs which suggests they have had plugs on them, looping the
internal reference, other little bits of information also pointed to that,
the remnants of a
Thank you Nigel, I've also taken a gamble on one of these units and am
keeping my fingers crossed that it has a Rb standard in it.
The service manual is most interesting, it looks like I could use one of
the two 'loops' to lock a different OCXO, with a little tinkering it could
be a very useful
I once spent a very miserable but profitable weekend remaking a thin
ethernet network where the "installation expert" had stripped back 10B2
coax four inches and neatly separated core and shield, heatshrinked them
into pigtails and then soldered them into panel mount BNC sockets.
He was outraged
This may sound silly but aside from the failing capacitors that cause
displays to dim, the emissions falling and other esoteric issues, in my
years repairing VCRs with VFDs I most often found a good clean of the glass
and bezel would improve the brightness a considerable amount.
On 9 Nov 2015 05:
*I MAY BE WRONG* But...
Something is telling me I've run across that device before and it uses a
PLL with inbuilt VCO, if I'm right then it's fairly close to the reference
design for the device plus an atmega processor and the schematics are
available somewhere on the site
On 19 Oct 2015 14:04,
1 - 100 of 109 matches
Mail list logo