I recently got a used 53131A. It had the same problem, even though the
BNC connectors are fixed to the front panel.
On Wed, Nov 19, 2014 at 2:18 PM, Anders Wallin
wrote:
> A colleague of mine had seen this exact same behavior on another 53230A.
> The problem is a narrow trace right after the CH
Is the upgrade similarly easy on a 53131A ?
I realise that it needs to have an additional controller pcb but I
have one of these counters fitted with option 001. The pcb holding the
oscillator has an edge connector that looks suitable for a 10811A, and
I have one to hand as well as a couple of com
I've seen Gerry's board and might well fit one to another counter.
However, this already has a suitable board - in fact, it appears it is
an oven, not a tcxo. Presumably just not as good an oven.
The point is, it looks ready to receive a 10811A. In fact, consulting
the assembly-level service guide
Do any have the 68332 ? That's got the TPU - Time Processing Unit.
Pretty good at multiple time domains or, in their frequent job as
engine controllers, mixed time/crank angle domains.
On Fri, Dec 5, 2014 at 9:17 PM, Gerhard Hoffmann wrote:
> Am 05.12.2014 um 21:20 schrieb Hal Murray: d...@dougro
Due to a bulk purchase, I have two used 53131A counters to sell.
Preferably a UK buyer, looking for about £200 + postage. Standard
reference (not medium or high stability), calibration expired.
Please contact me off-list for full details.
-adrian
___
ti
I'm the seller. The counters, as a matter of interest, came from the
factory that Rakon recently closed in Lincoln. Unfortunately there wasn't
any contact with the actual staff so I have no information about them.
I bought 3, kept one for myself - the only one with the MS option. I
haven't tried t
I think another spinoff from Cirkit was Mainline Electronics of Leicester.
They also mostly disappeared (though I have wondered if they still trade as
the ebay seller anonalouise, who seems to have similar stock).
Mainline Electronics seems to exist as a Russian website, and it looks as
though the
The ttyS* devices should be owned by root and be in the dialout group, eg
crw-rw---T 1 root dialout 4, 64 Feb 28 08:31 /dev/ttyS0
crw-rw---T 1 root dialout 4, 65 Feb 28 08:31 /dev/ttyS1
crw-rw---T 1 root dialout 4, 66 Feb 28 08:31 /dev/ttyS2
crw-rw---T 1 root dialout 4, 67 Feb 28 08:31 /dev/ttyS3
Seiko and some other manufacturers used Supercaps for a while in their
Kinetic watches. Electrically they're fine, but they turned out to have a
shorter life than rechargeable batteries. They even replaced capacitors
with lithium rechargeables when servicing the older models.
In a backup situation
Thanks for the heads-up. Postage to the UK isn't quite so bad, and he
accepted a lower offer ..
The list of other items is well worth a scan, too.
I don't have a reference setup working yet but if there's anyone near
Bedfordshire, UK that would like to do an ADEV plot (just for fun, I'm not
expect
This stuff is lovely, but it's enthusiast's equipment, not public or
commercial museums. There's a great computer museum in Paderborn, Germany -
it's owned by the founder of an ATM company. I love that it has, in
Germany, a really good exhibit about Bletchley Park.
There's a pinball machine museum
The HP101A and 5275A arrived today. The 101A warmed up in about an hour and
the crystal temp settled. It's now reading 98.50 against my 53131A
(med. stability option but uncalibrated).
I'm not sure what the spec is, or how long ago it was tuned - but even if
it was set recently, it's still sur
There have been large numbers of master clocks in the broadcasting house
clearance auctions over the last year. As a result there are probably quite
a lot in circulation in the UK right now, though the BBC cachet put the
prices above dirt-cheap. The studio slave clocks were particularly popular.
I
What caused that degradation ? I'm interested in dos/don'ts for best use of
a 10811.
On Sat, Apr 11, 2015 at 11:32 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:
> On 4/11/2015 5:01 AM, J. L. Trantham wrote:
> Unless the design has been changed, the 10811 option
> for the 53132 ha
Looks to be Protel aka Altium for the schematics / pcb.
On Sun, Apr 26, 2015 at 2:42 PM, Bob Camp wrote:
> Hi
>
> After poking around a bit, more questions that comments.
>
> 1) It looks pretty cool.
> 2) Any idea of what the tool chain was that generated the files? (I
> probably need viewing pr
Is it driven as an inductive loop? That might put it under different
regulations.
On 11 May 2015 17:47, "Chuck Harris" wrote:
> Yes, but in the case of the lawnmower fence, and the
> invisible dog fence, the transmitter drives the fence
> as an antenna.
>
> In the US, the antenna size for "free
I hesitate to say this for fear of provoking a fault, but although I
wouldn't consider them especially good, they're not universal failures. I
have a Pi running a house control and logging system that has an uptime of
230 days despite being largely unattended (I'm not on site - it doesn't get
any s
The PA-09 crimp tool will do a lot of smaller crimps, even the small JST
sizes. There's also a bigger one available.
http://www.ebay.co.uk/itm/261046260247?ru=http%3A%2F%2Fwww.ebay.co.uk%2Fsch%2Fi.html%3F_nkw%3D261046260247%26_rdc%3D1
On Mon, Jun 8, 2015 at 12:53 PM, George Dubovsky wrote:
> I
Although it's published by a vendor, this applications manual has a lot of
useful information.
http://www.we-online.com/web/en/electronic_components/produkte_pb/fachbuecher/Trilogie.php
I was sufficiently impressed when I saw it at a trade show that I bought a
copy, and they've reduce the price s
I have a very similar looking Junghams clock bought in the UK about 20
years ago (though it doesn't have that time zone graphic). It works off the
UK MSF standard : still in daily use, though it doesn't sync quite so well
since the transmitter moved to Cumbria (I'm quite close to the old site,
Rugb
The difficult thing about that is that making the wifi connection without
any user interface is difficult now that most wifi connections have
security enabled.
On Tue, Aug 11, 2015 at 8:14 AM, Chris Albertson
wrote:
> You might look into GPS devices. They aren't quite as cheap as the WWVB
> > c
These seem a good deal but the shipping price to the UK puts me off a bit -
it's 3 x the price of the unit.
I've looked into shipping a number of them to get a better rate and it
seems worthwhile. I'm happy to sell them on to time-nuts at cost (will
include shipping and duty) and ebay the remainde
box. I would not have any real fear of them not making the
> trip over
> the ocean in fine shape. Once they get there, you should be able to
> re-label the
> original boxes and mail them out. Certainly not a “no hassle” deal, but
> pretty
> simple as these things go.
>
&
Thanks for doing these write-ups.
I've bought several units from the US supplier with the intention of
getting shipping down to a sensible level, and have a lash-up based on your
article which has had all the first few running. They won't lock to
anything far off 1pps so need a properly working re
I shipped a bunch of ref-0 units to the UK. Saved a huge amount of shipping
by buying a lot. It might not be much more expensive to ship 10 than 1.
There are still a couple of patient folk on this list waiting for me to
ship them on (or maybe they've given up waiting for me to be less busy).
O
There's a drawing on the spec sheet. It's just a bit of 1 5/8 tube. Try a
local aerial fitter.
On Fri, Oct 2, 2015 at 2:01 PM, Steve wrote:
> The Symmetricom data sheet mentions the Option AUB antenna mast. What is
> that? I don't find details of it. How does you mount the 58532A antenna if
> t
I have a synchronome clock built for the British Post Office.
I find that the 10V or so that a USB to serial adapter can produce can
trigger the solenoid, if allowed to charge a capacitor for the intervening
minute. The effect is that I can print a single character once a minute at
a low bit rate
Are these the references with a rubidium oscillator ? They seem to have
similar models with OCXOs etc.
http://www.ebay.co.uk/itm/111862884745
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Yes, i found that description and it put me off buying one. But there are
also references on the web (including time-nuts archive) to surplus T801s
with rubidium sources.
Anyway, I took a punt and bought one.
So I'll find out soon :).
On Mon, Jan 11, 2016 at 11:18 AM, Charles Steinmetz
wrote:
If so, let's hope the sudden surge of purchases will encourage the dealer
to find some more :)
On Tue, Jan 12, 2016 at 1:39 PM, Clint Jay wrote:
> 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 I
not a big issue. I may
just rewire those outputs as a distribution amplifier in any case.
On Tue, Jan 12, 2016 at 5:46 PM, Adrian Godwin wrote:
> If so, let's hope the sudden surge of purchases will encourage the dealer
> to find some more :)
>
>
> On Tue, Jan 12, 201
Why use a board full of TTL when an $1 8-pin chip will do it ?
On Thu, Jan 14, 2016 at 11:44 PM, Morris Odell
wrote:
> Am I missing something here?
>
> I understand the ease and fun of programming up an AVR as much as anyone
> but surely this task could be accomplished easily with a chain of f
If you have RS232 connections, won't you have one for each device ? Whereas
with GPIB, you'll (probably) only have one bus. The GPIB bus will arbitrate
and avoid both instruments talking at the same time (this might not be true
in talk-only mode since there's no target address involved) but it does
You might have come across the Raspberry Pi story : one of the revised
versions had a SMPS control chip that was intended to be buried inside a
phone, not exposed on an open pcb.
https://www.raspberrypi.org/forums/viewtopic.php?t=99042
On Mon, Jan 18, 2016 at 3:11 PM, Bob Camp wrote:
> Hi
>
>
A tant melted on one of my KS-246361 boxes (I guess they're a similar age,
possibly even the same source). The only one so far to have trouble. It
failed in such a way that it continued to smoke and load up the power
supply,
The current drawn from the no-name laptop power supply was still well
wit
HP built their reputation for quality and reliability with test equipment.
Computers were always considered a bit weird (in a nice way, in the case of
handheld calculators) but printers have followed the consumer race to the
bottom.
It's sad to hear that the instrument division are no longer focus
I have a small collection of 10811 and similar oscillators here, collected
from hamfests rather than china (and mostly pre-ebay).
What sort of testing regime would you put them through ? I don't have
anything as exotic as a timepod but I do have an HP53131A, the Tait Rb
source, and a KS-24361 set
Could it be microphonic capacitors, or the crystal itself ?
Have you got a big old heavy power supply with a buzzing transformer on
your workbench ?
On Sun, Feb 28, 2016 at 3:04 PM, Daniel Watson
wrote:
> Hi,
>
> I put one in a freezer and measured the current draw. At -12*C, it drew
> about 32
This turned out to be an easy way to run Lady Heather itself (herself ?) on
Linux - it works well under Wine, but identifying the serial port is a
problem. But run Heather with '/ip=localhost' and ser2net to connect to the
USB serial port and all is smooth.
I used the ser2net config line
45000:ra
My understanding of the article was that although fairly simple control
techniques such as PID were used, their innovation was to determine what
function the loop was performing, (initial lock, stability, and transition
from one to the other) and to choose a set of constants for loop control
approp
I've dumped out the KS24361 ROM using the built-in Forth interpreter as a
move towards reverse-engineering it.
Is there somewhere I can put this for easy access ? I imagine it's
copyright HP and although I doubt they'll care, I don't want to cause any
problems.
-adrian
___
's site:
>
> http://www.ko4bb.com/manuals/
>
> /tvb
>
>
> - Original Message -
> From: "Adrian Godwin"
> To: "Discussion of precise time and frequency measurement" <
> time-nuts@febo.com>
> Sent: Friday, April 15, 2016 1:56 PM
> Subjec
They're a LED and some current limiting. Some are specced as low as 3V and
10mA but they're optimised for 12-24. I'd definitely use a transistor and
at least 5V, especially from something like a Pi or Teensy, which have 3v3
logic levels.
My reading is that Bill doesn't want to mess around with mic
that.
http://www.audon.co.uk/webcontrol/EZ-21g.html
On Mon, May 2, 2016 at 7:21 PM, Adrian Godwin wrote:
> They're a LED and some current limiting. Some are specced as low as 3V and
> 10mA but they're optimised for 12-24. I'd definitely use a transistor and
> at least 5V, esp
Since you have an impulse clock system, you could use that to fire the bell
- you could modify a slave clock or use one of these :
http://www.ebay.co.uk/itm/111982558390
or possibly this one :
http://www.ebay.co.uk/itm/291730808914
The first seems rather expensive to me, I've more commonly seen
With regard to the data sheet, all the specified errors have to be added to
get the worst case (though they may not all operate in the same direction).
So you have the initial accuracy at delivery, + a term related to age, + a
term related to temperature and any other factors that are specified. T
In case anyone's in London this week, the NPL have an open day :
http://www.npl.co.uk/openhouse/
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and follow the instructions th
On Fri, Jun 24, 2016 at 3:32 PM, Attila Kinali wrote:
>
> The trick is to use semi-manual pick&place machines for low volumes.
> Ie machines that you do not program, but guide by hand. This allows
> faster and more accurate placing of components than would be possible
> with a pure manual process
Many parts can't be recognised visually. Capacitors are the obvious example.
On Sat, Jun 25, 2016 at 6:11 AM, Chris Albertson
wrote:
> The ideal hobby use pick and place machine would be very different
> from a commercial machine. Lets say I want one board made. What I
> want to minimize is m
On Sat, Jun 25, 2016 at 9:26 AM, Steve Wiseman wrote:
>
> There are mailing lists for this stuff, chaps - openpnp, firepick,
> versatronics, plenty of others. All full of people finding out that,
> like everything, it's trickier than you first think. See you over
> there, let time nuts be time nu
I was inclined to agree, cynically reasoning that many implementations
would argue that the leapseconds would average out in most applications and
they could ignore them.
But actually, it would be good for programmers to properly separate the
concepts of elapsed time and clock-time. If elapsed tim
On Thu, Aug 11, 2016 at 4:03 AM, Chris Albertson
wrote:
> Digital clocks are just not the amazing technical wonders they once
> were.
>
>
No, but it's interesting that they've considered the interface rather than
using the common one supported by generic clock chips. Phone interfaces are
rarely g
I use a beautiful Wild M3Z that I got at a good price from a British
Aerospace auction. It does have the disadvantage that there's a very exact
spot to place your eyes, but the image is superb. I typically start at the
bottom end (6.5 x 10 x 0.5) but often use the other zoom levels (up to 40 x
10 x
I'm being Devil's Advocate here because I certainly realise switchers do
generate high frequency noise. But wasn't the intention of them to make
filtering easier, with smaller filter components, exactly because they
operate at higher frequencies ?
So why do they fail ? Is it cost-cutting to make t
On Tue, Sep 6, 2016 at 4:24 AM, Bob Darlington
wrote:
> Rick,
>
> I'm going from memory here. My former business partner (now deceased) had
> a "beer fridge" setup as an environmental chamber for our instruments. The
> trick for stability was to run the AC compressor all the time, and push
> ag
Recently, I dumped the ROM from a ks24361. I imagine it's the same or very
similar code. Are there notes published somewhere ? It would be useful to
compare them.
On 7 Oct 2016 7:52 p.m., "Magnus Danielson"
wrote:
> Hi Tom,
>
> On 10/07/2016 06:02 PM, Tom Van Baak wrote:
>
>> To expand on the re
Z3801A there is no more published notes
> as far as I know. I can see what of my project is easy to share though.
>
> Is the images uploaded somewhere?
>
> Cheers,
> Magnus
>
>
> On 10/07/2016 10:06 PM, Adrian Godwin wrote:
>
>> Recently, I dumped the ROM fro
On Sun, Oct 9, 2016 at 9:07 PM, Tom Van Baak wrote:
> 3) The problems you are running into get far worse the less accurate and
> less stable the sources are (such as mains, mechanical, vintage quartz, and
> pendulum clocks). So that's why I developed the picPET time-stamping
> counter. It's 400 n
I would add a DC blocker for the input to the spectrum analyser.
On Fri, Oct 14, 2016 at 7:59 PM, Hal Murray wrote:
>
> time-nuts@febo.com said:
> >> Nick, thanks for your detailed reply. Would you happen to have a photo
> of
> >> the "spring looking things?" I am not entirely sure I have one
How about the Apollo launches ?
On Wed, Oct 19, 2016 at 12:40 AM, jimlux wrote:
> On 10/18/16 4:25 PM, Magnus Danielson wrote:
>
>> Jim,
>>
>> On 10/19/2016 12:51 AM, jimlux wrote:
>>
>>> On 10/18/16 2:30 PM, Tom Van Baak wrote:
>>>
Hi Vladimir,
Some of these numbers survive to t
Wow .. 24kW for a clock display !
On Fri, Oct 21, 2016 at 6:56 AM, Todd Caldwell wrote:
> Hi All,
>
> I've been lurking and assembling gear for the most part, so this is my
> first post I think.
>
> I was at KSC in May of 2010 for the launch of STS-132. Attached is a
> relatively closeup p
What is the circuit driving that signal ? It appears to have too little
positive drive to overcome the capacitance. Perhaps it's an open collector
with too large a pull-up ?
On 21 Oct 2016 12:23 a.m., "Ilia Platone" wrote:
> sorry, no attachment, this mail contains two images, one is the previou
That's one sweet soldering iron. Is it an American Beauty ?
On Fri, Oct 28, 2016 at 4:31 PM, Peter Reilley
wrote:
> I did finally get it open. I used a very large old style soldering
> iron and .003 inch steel shim stock. I would melt the solder on the
> straight seams and insert small piec
The 1k resistor doesn't seem to feed the 'S30'. It looks as though pin 14
(Vcc) goes via that thick track to the +12 input.
On Fri, Oct 28, 2016 at 5:46 PM, jimlux wrote:
> On 10/28/16 8:31 AM, Peter Reilley wrote:
>
> Looking around with my scope it seems that the output driver chip is bad
>> a
The data sheet for the device only mentions 12V. Other data sheets (eg the
131) mention 5V and 12V, but don't indicate how to specify one or the
other.
Gerry Sweeny's article at
http://gerrysweeney.com/diy-hpagilent-53131a-010-high-stability-timebase-option/
mentions a part number suffix that dist
Metcal /OKI might be that other brand. I'd certainly recommend them, but
the tweezers are not as fast to heat as the single tip devices.
I've had little success personally with the hot air devices. I seem to
toast the board before I melt the solder, and when it does melt it's not
limited to one co
SMD parts aren't going to go away. It's worth investing in good tools to
deal with them and learning the best way to use them.
I'd put tweezers quite high on that list, and although the metcals are
worthwhile if you can avoid full price, the chinese tweezers are
surprisingly useful at very low cos
without trying them
> first. They are not easy to control solder application when mounting a
> component.
>
> I do really like the Weller rt7 knife tip.
>
> On Sunday, 6 November 2016, Adrian Godwin wrote:
>
> > SMD parts aren't going to go away. It's worth inve
You might also want normal cold tweezers to place the part. I'm not sure
what an orange stick is, around here I'd use a wooden toothpick. Perhaps
that's the same thing !
The Swiss Venus tweezers have a lovely finish and the ends always meet.
There are probably others as good.
If you get some plac
Ref. the thread about burning tantalum capacitors .. If I were going to
china I'd be looking at the tools. Many might be low quality (but cheaper
than ebay). Others might be excellent. You need to see them to find out.
On Sun, Nov 6, 2016 at 4:33 PM, Azelio Boriani
wrote:
> Maybe I have a clue:
Slightly off-topic, as this is a general repair question. But it's a TIC.
I'm repairing a 5275A timer (all-discreet count logic to 100MHz, neon bulb
display, a most amazing bcd to decimal decoder made from neons and LDRs,
1-2-2-4 decade counters ..) and the current problem is a 2n1038-2 germanium
.
>> How about some pix of a 9815 calc. That would be pretty neat.
>> On really old stuff if you can't find the part needed its pretty easy to
>> replace the whole function with modern answers. I know it sort of breaks
>> the original mode but for me at least its a case of
t;> How about some pix of a 9815 calc. That would be pretty neat.
>> On really old stuff if you can't find the part needed its pretty easy to
>> replace the whole function with modern answers. I know it sort of breaks
>> the original mode but for me at least its a case of ge
I'm still struggling to get the acrylic I need. I've been into London a few
times but not been able to get to the shop in business hours. Guess I could
order online if necessary but it will cost a fair bit more.
On Wed, Nov 9, 2016 at 3:19 PM, paul swed wrote:
> I saw the low CBT temp also and 1
Yes, I'm sorry about that.
On Wed, Nov 9, 2016 at 5:18 PM, paul swed wrote:
> Adrian
> I think you may have responded to the wrong thread??
> Regards
> Paul
>
> On Wed, Nov 9, 2016 at 10:21 AM, Adrian Godwin
> wrote:
>
> > I'm still struggling to get the
But trailing isn't the same as falling. The leading edge can be of either
polarity.
On Wed, Nov 9, 2016 at 11:28 PM, Bob Stewart wrote:
> Tom,
> How many times have people posted here, on time-nuts, not to trust the
> trailing edge of a 1PPS pulse?
>
> Bob --
I looked at this when it was mentioned here a few weeks ago. I did the
procedure in an hour or so and it's working well, keeping the PPS within
50ns of GPS with 6-8 satellites. Monitored by the patched version of Z38XX
at the moment though I look forward to putting Lady Heather on the job.
The cur
What if your shop reference were drifting up ?
On Sat, Nov 12, 2016 at 11:25 PM, Joseph Gray wrote:
> TCXO, not OCXO, but related. Sorry, but I have no graphs.
>
> I work for a municipal radio shop. We service radios that span 20
> years (through acquisitions, it was GE, Ericsson, Com-Net, M/A-
Tom describes the PIC as a 'poor man's FPGA'. And I'm aware of how they're
programmed - I agree they're a good choice for this sort of device.
However, even poor men can use FPGAs now. I'm following with interest the
open-source toolchain available for the Lattice ice40,
http://www.clifford.at/ice
This one's pretty quiet. But the airflow is a bit lower.
http://www.frozencpu.com/products/9367/fan-587/Sunon_MagLev-Vapo_40mm_x_20mm_Fan_w_TAC_Sensor_Wire_-_Bare_Wire_HA40201V4--C99.html?tl=c15s560b53&id=mrFX8Rvo
On Mon, Nov 21, 2016 at 5:57 PM, jimlux wrote:
> On 11/21/16 6:39 AM, Charles
I bought some old crystals on ebay :
http://www.ebay.co.uk/itm/15114483
Is anyone familiar with this style ? I don't think the quartz is visible in
the glass section : I imagine that's just an insulator. I think the quartz
is under a brass disc, with a sping to hold the disc down visible thro
bout right for that sort of thing. Swap one
> in and the
> transmit frequency changes. Number 7 for 80 KHz. Number 8 for 85 KHz.
> Number 7 for
> 75 KHz. Just a guess …
>
> Bob
>
>
>
> > On Nov 26, 2016, at 7:40 AM, Adrian Godwin wrote:
> >
> > I bo
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., "jimlux" wrote:
> I'm looking for a small linux single board - similar to RPi or Beaglebone
> Black, but
Thanks for this. I've seen something similar from Murata :
http://uk.farnell.com/murata-power-solutions/oki-78sr-5-1-5-w36-c/converter-dc-dc-1-o-p-7-5w-1-5a/dp/2102101
Since they're a mainstream supplier of inductors they may have managed
better performance - it would be interesting to compare.
:
>
>> Thanks for that pointer! When I searched Digikey, I wasn't able to find
>> anything that was in the 3-lead TO-220 case. I will definitely check
>> out the Murata units, as I suspect they perform better than this one.
>>
>> John
>>
>> On 12/0
Now running for me on Linux twice : one with a KS24361 and the other with a
Res-T (rx only).
Thanks !
On Sat, Dec 10, 2016 at 7:09 PM, Bob Camp wrote:
> Hi
>
> Well there goes the neighborhood :) …
>
> It used to be that the absolutely terrific Lady Heather only worked on
> TBolt’s.
> That mad
I've got several of the Ref 0 boxes but none of the Ref 1. I've added an
Oncore GPS receiver to one of them as per Peter Garde's notes and it works
well.
But I'd like it to run with an unmodified Ref 0 too in the ref0/ref1
configuration. Not that I need an HA reference but just for interest. I've
ugging
> the cable I don’t think they matter at all. If anything, the system is
> more reliable
> with a normal length pin on the connector.
>
> Bob
>
> > On Nov 22, 2017, at 6:08 PM, Adrian Godwin wrote:
> >
> > I've got several of the Ref 0 boxes but none
d transfer to the active unit.
>
> Jerry
>
> > On Nov 22, 2017, at 4:10 PM, Adrian Godwin wrote:
> >
> > Yes, I cross-connected the pins, but I didn't cut any short.
> >
> >
> >
> > On Wed, Nov 22, 2017 at 11:36 PM, Bob kb8tq wrote:
&
Maybe this one ?
http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
There are probably many others
On Wed, Dec 13, 2017 at 8:03 PM, Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:
> I need a very simple controller to tune a DDS with up/down
> switches (imagine setting the
t's a superset
> that I can just simplify.
>
> Rick
>
>
> On 12/13/2017 12:10 PM, Adrian Godwin wrote:
>
>> Maybe this one ?
>>
>> http://www.qsl.net/pa3ckr/bascom%20and%20avr/ad9951/index.html
>>
>> There are probably many others
>&g
;
> On Wed, Dec 13, 2017 at 4:05 PM, Adrian Godwin
> wrote:
>
> > It's a bit bizarre that it uses Basic. I just remember my local ARC using
> > it as a project sometime ago. Possibly in the 20th century. :)
> >
> >
> > On Wed, Dec 13, 2017 at
https://www.youtube.com/watch?v=oMcRUqhrYNY
Right at the end of this teardown (50:50 minutes) Mike reaches the Vectron
oscillator module and opens that up too.
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A similar product is the Polar Toneohm. I've been after one for a while but
they seem to go for high prices.
On Mon, Jan 1, 2018 at 12:12 AM, Gary Woods
wrote:
> On Sun, 31 Dec 2017 20:56:26 +0100, you wrote:
>
> > Without a thermal camera I've used a 4-1/2 digit DVM set for 200mV full
> scale
Like this one ?
(Not for a 53132A but a similar problem)
Better still would be a graphics display that emulates the original
annunciators.
https://www.youtube.com/watch?v=GgQS7ePEFmA
On Sat, Jan 6, 2018 at 9:14 PM, wrote:
> Hi,
>
> Saw this on the EEVblog and wondered if it could be done for
Joe's link worked for me earlier this afternoon in the UK, but is blocked
now at 10pm local time.
Glad I watched it when I could !
On Wed, Jan 17, 2018 at 10:00 PM, Bill Metzenthen
wrote:
> It also worked in Australia last night. I watched a few minutes and
> decided to watch the rest today.
What a pity nobody thought to include an accuracy degradation system into
GPS itself, for use when you don't want the enemy to benefit from it.
And how odd to show off your secret jamming technology in a major scheduled
exercise, so the Bad Guys can study it.
On Fri, Jan 26, 2018 at 2:57 PM, Gar
Hi Deirdre,
I'd like to repeat your measurement at a different location (eastern
england).
What did you use to capture the data and write it as a vcd file ?
-adrian
On Tue, Feb 6, 2018 at 6:40 PM, Deirdre O'Byrne
wrote:
> OK so it's not the microsecond or nanosecond stuff that much of this l
It's called 'adhesive lined heatshrink'. Yes, it's available, though a reel
of the Good Stuff (Raychem) costs a small fortune.
They also make custom boots to fit various standard connectors.
Probably best bought as surplus or from a trusted seller who bought reels
from military, autosport or aircr
I've come across an old (2003) GPS receiver made by the Australian company
Sigtec Navigation. Although this is old, it has some interest because it's
a relatively open design and has been used as the basis for various open
source and experimental receivers.
It does seem to work (I'm getting NMEA o
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