On 21 Apr 2016 01:00, "Bob Camp" wrote:
>
> Hi
>
> RG-6 Quad Shield should be fine as long as it’s meeting the published
specs. The advantage of LRM-400 is that you likely *know* where it came
from and what the specs are.
There is plenty of coax marked LMR400 that is produced in China and not by
On 30 Mar 2016 09:00, "Jay Grizzard" wrote:
>
> > It get's "interesting" when you look at the MTBF times on hard disks.
Some
> > of the figures quoted in hours related to an MTBF of over 100 years.
From
> > what I read before, this was based on you replacing the drive at the
end of
> > its service
bly
chose to replace it with one of higher capacity.
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT,
UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44
On 27 Mar 2016 03:00, "jimlux" wrote:
>
> On 3/26/16 3:25 PM, Bruce Griffiths wrote:
>>
>> On Saturday, March 26, 2016 09:30:30 PM Rob Sherwood. wrote:
>>>
>>> You cannot add the directivity and gain. Doesn't work that way. Rob,
NC0B.
>>>
>>> Sent from my iPad
>>
>> Minicircuits would disagree w
On 14 Feb 2016 09:04, "Perry Sandeen via time-nuts"
wrote:
>
> Hi,
> It is rather depressing to me to hear RK and others remark about the
unreliability of HP test equipment.
> There is one area where they had outstanding equipment.
I have a friend with a fairly large lab. He must have 50 signa
y can't understand why they don't put two battery holders and a
couple of diodes so a good battery in an one would be ok. Having to mess
around desoldering batteries and hooking up power supplies seems crazy to
me.
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered o
On 11 Feb 2016 08:05, "Joseph Gray" wrote:
> The less expensive Z3805A's look like they have been beat to crap,
> before or after being pulled from the scrap pile. I'd worry about
> damage to the OCXO in these. For more money, yixunhk has some nicely
> packaged units and AFAIK he has a good reput
On 30 December 2015 at 14:20, Bob Camp wrote:
> Hi
>
> Actually it looks like the party is over. At least from here in the US,
> when I go to
> the original links, they will only sell me the book. No more free
> downloads.
>
> It was fun while it lasted ….
>
> Bob
>
The party never started here
On 17 Dec 2015 21:00, "Anders Wallin" wrote:
>
> First prototype assembled today, tested with 12 VDC SMPS wall-wart supply
> and with 12 V lead-acid battery.
> Anders
Is the lead acid battery supposed to be there so the unit continues to
function if power is removed?
If do, I believe that the c
Unlike the USA, the UK has just one grid. Someone pointed this out to me,
which looks an interesting visual display
http://www.gridwatch.templar.co.uk/
but there are links to the raw historical data, which includes frequency. I
have not looked into how much data is available, but it might interes
On 10 October 2015 at 14:20, Chris Waldrup wrote:
> Hi,
>
>
> I have decided I'd like to get a UPS to put on the rack containing my
> Thunderbolt, the laptop that runs Lady Heather, and frequency counter.
>
There's one issue with them that I don't see anyone mention.
I was thinking of doing the
On 28 August 2015 at 21:48, Dr. David Kirkby (Kirkby Microwave Ltd) <
drkir...@kirkbymicrowave.co.uk> wrote:
> My LCR meter came back from Keysight UK last week, where it was
> calibrated. This instrument works at various frequencies from 20 Hz to 1
> MHz, so obviously h
On 29 August 2015 at 12:59, Javier Herrero wrote:
> Hello,
>
> The calibration certificate does not indicate that the measurements were
> done with the frequency counters referenced to the 5071A at the time of
> calbiration (if so, it would be listed under the Calibration Equipment Used
> table).
On 28 Aug 2015 23:05, "Oz-in-DFW" wrote:
>
> The uncertainly listed seems to be 7.6 mHz (milliHertz, or .0076 Hz. A
> bit better that you mention..
No, please look again.
The first line does show an uncertainty of 7.6 mHz, but that is when the
LCR meter was set to 1 kHz. The last line shows an
My LCR meter came back from Keysight UK last week, where it was
calibrated. This instrument works at various frequencies from 20 Hz to 1
MHz, so obviously has some sort of oscillator in it. But I don't think the
absolute accuracy on frequency is important on this, as it does not even
have the abil
ve test equipment to make a 10 MHz reference.
--
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44
On 18 July 2015 at 09:45, Ole Stender Nielsen wrote:
> I had a few LM394CN left and used one for the pre-amp.
> I would try to use another low-noise transistor. Furthermore, you do not
> necessarily need a matched pair. The transistor on the right in the
> schematic is merely used for biasing the
I had a plan to construct an "off-air" frequency 10 MHz standard based on
the 198 kHz from the Droitwich radio 4 transmitter, just by hooking up
various bits of test kit and writing a computer program to control the
equipment via GPIB. No electronics, apart from an antenna, would need to be
built a
On 19 July 2015 at 13:39, Bob Camp wrote:
> Hi
>
> One thing worth checking:
>
> The impedance at the “sum” port may or may not be 50 ohms. It’s worth
> checking before you
> go to extreme lengths to come up with a “perfect” 50 ohm amp.
>
> ==
>
> Since part of the world likes 75 ohms, it’s a
On 20 Jul 2015 00:09, "Mike Feher" wrote:
>
> But they can be found very inexpensively on eBay. 73 - Mike
There are a lot of fake transistors on eBay.
There was a report on the HP/Agilent list where someone bought 10 IC's from
eBay as a test. Not one was genuine.
Personally I would not buy semi
On 19 July 2015 at 10:56, Charles Steinmetz wrote:
> Dave wrote:
>
> Some time ago I mentioned I'd bought a couple of Minicircuits 16-way power
>> splitters with the intention of making a 10 MHz distribution amplifier
>> * * *
>> Here are the ISOLATION results.
>> * * *
>> CONC
On 18 July 2015 at 04:25, Charles Steinmetz wrote:
> Dave wrote:
>
> 1) Do you have any suggestions for a replacement for the LM394CN, which is
>> obsolete and unobtainable from any reputable source? There are plenty on
>> eBay for a few $'s from China, but the probability of them being fakes is
On 16 July 2015 at 08:05, Ole Stender Nielsen wrote:
> I use a home-made untuned loop antenna with 4 windings of 2.5 mm2
> insulated wire on a 80 x 80 cm wooden frame, and with a grounded base
> pre-amplifier mounted on the antenna frame. A schematic is enclosed for you
> to copy.
> The pre-ampli
On 16 July 2015 at 23:23, Bob Camp wrote:
> Hi
>
> Quick and simple:
>
> 1) Signal power is proportional to the area of the loop. Bigger is better.
> 2) Inductance is proportional to the turns squared. Turns do not directly
> affect signal to noise.
> 3) Inductance may be resonated with a capacit
On 16 July 2015 at 08:05, Ole Stender Nielsen wrote:
> I use a home-made untuned loop antenna with 4 windings of 2.5 mm2
> insulated wire on a 80 x 80 cm wooden frame, and with a grounded base
> pre-amplifier mounted on the antenna frame. A schematic is enclosed for you
> to copy.
>
Thank you. I
ZOn 15 Jul 2015 22:18, "Poul-Henning Kamp" wrote:
>
> ----
> David Kirkby - Kirkby
> Microwave Ltd " writes:
>
> >What's the best sort of antenna for these?
>
> I use a $20 loop antenna I have rigged up myself, it lives in my attic:
>
&g
tandards. I did
think of using a half-wave dipole, but my garden is just a wee bit too small.:-)
Dave
--
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, comp
exceeds the minimum specifications
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT,
UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44 7910 4
On 11 Jul 2015 03:28, "GandalfG8--- via time-nuts"
wrote:
>
> This is a reply to the topic "Loran-C reception in the UK" with specific
> emphasis on the Stanford Research FS700.
> Points to note.
>
> All three of my units seem to have the Option 01 oscillator fitted,
> although only one state
How good/bad would a LORAN-C frequency reference such as the Stanford
Research FS700 work in the UK? I live about 60 km to the east of central
London.
Is there any future for LORAN-C in the UK?
I am looking for a frequency reference that is not GPS - I already have a
GPS frequency reference but
On 20 June 2015 at 04:18, Bob kb8tq wrote:
> Hi
>
> It is interesting as you go through the various student and home versions,
> just how
> hard it is to figure out what you are (and are not) buying in each case.
> One example
> would be the inclusion (or not) of GPIB capability. One would *assum
I have an HP 58503A which I am using as a frequency source only - not
to tell the time. I want to shorted the antenna cable a bit, but are
wondering if I should let the GPS receiver finds it position again. Or
either of the following better
* Remove antenna cable, put a new N plug on, and screw it
On 5 Apr 2015 02:26, "Charles Steinmetz" wrote:
> One expects a safety factor between the minimum spec and typical
operation. I'd be concerned if a 58503 was consistently predicting >2uS
(to me, >2uS means "I may still meet spec, but I'm not as stable as I
should be").
>
> Best regards,
>
> Charl
On 1 Apr 2015 23:24, "Bob Camp" wrote:
>
> HI
>
> Best guess is that your antenna is not doing the job.
That's possible. It was supposed to be an Andrews antenna, but there's
nothing on it to indicate that to me. But it is well sited. I expect
antenna issues can explain the log entry
092:20150
On 1 April 2015 at 17:39, Chuck Harris wrote:
> I can't help but notice that you have several of these entries:
>
> Log 067:20150101.00:00:11: 5V is out of tolerance, value: 5.52
> Log 068:20150101.00:00:11: 15V is out of tolerance, value: 19.46
>
> I think you better look into them before anyth
's currently a
problem, but I'm puzzled there's no entry in the log to indicate why
the alarm is on
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company numbe
On 18 Feb 2015 04:20, "Tom McDermott" wrote:
>
> Hi Dave - agree that VNA is one good way to measure the delay. If
required
> accuracy is less than about
> 0.5 nsec, then Tx antenna to Rx antenna mutual impedance starts to become
> an issue.
I don't see why. The two antennas can (and should) be
On 7 Feb 2015 19:18, "Tom McDermott" wrote:
> Has anyone on the list measured or otherwise estimated the active antenna
> delay including the amp and filters?
>
> -- Tom, N5EG
I have never done this, but suspect that using a VNA is the best way to
go. With a simple passive dipole on one port, a
On 25 Jan 2015 23:02, "Tom Van Baak" wrote:
> You're getting 1e-12 at 1 second. Sounds fine to me.
Obviously you have the experience to know that 1e-12 at 1 second is fine.
But if it's possible, I would like to understand the relationship between
the counters specification and the adev (or one
After sorting out some GPIB issues, I finally got to be able to make
some measurements on my Stanford Research SR620 time-interval counter.
I thought it sensible to first try to determine the performance of the
counter, which is using its own high stability clock (option 001). So
no external refere
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Chelmsford, Essex, CM3
6DT, United Kingdom
Registered in England and Wales as company number 08914892
http://www.kirkbymicrowave.co.uk/
Tel 07910 441670 / +44 7910 441670 (0900-2100 GMT)
On 13
On 12 January 2015 at 12:34, Attila Kinali wrote:
> Hi,
>
> I just stumbled over this [1] nice article by Fritz Riehle that might be
> of interest to others as well.
>
> Attila Kinali
>
> [1] "Towards a Re-definition of the Second Based on Optical Atomic Clocks",
> by Fritz
On 8 January 2015 at 10:03, Charles Steinmetz wrote:
> Dave wrote:
>
>> Yes, but I was aware of this, and that's why I got two different isolation
>> figures.
>
>
> What I was pointing out is that there will be *4* different isolation
> figures from any one output port, not just two. The lowest w
On 7 Jan 2015 01:24, "Charles Steinmetz" wrote:
>
> Dave wrote:
>
>> At 50 MHz, the loss from the common port is 12.8 dB, and the isolation
>> between two ports sets of ports is either 38 or 48 dB
>
>
> To get the worst-case output-to-output isolation, you need to test two
output ports that are el
Just to say, the comment on the graphs that the VNA covers 50 MHz to 20
MHz, is obviously wrong. My 8720D covers 50 MHz to 20 GHz.
I do have another couple of VNAs here that cover 10 MHz. I will do some
more measurements, with a more suitable VNA when I have both splitters here
and some time for
On 4 January 2015 at 02:37, Bob Camp wrote:
> Hi
>
>> On Jan 3, 2015, at 6:09 PM, Dr. David Kirkby (Kirkby Microwave Ltd)
>> wrote:
>>
>> I was looking to make a 10 MHz distribution amp to feed test equipment with
>> the output of a GPSDO.
>>
I was looking to make a 10 MHz distribution amp to feed test equipment with
the output of a GPSDO.
I see this
http://m.ebay.com/itm/201244302355
16-way Minicircuits splitter on eBay which I got for $40. I guess the loss
is around 12 dB.
I actually bought another for $35 which was similar but o
I'm just in the process of trying to look at writing some GPIB
software for my SR620, which is a fairly new arrival. I paid $950 for
it, which I think was pretty good, considering it has the high
stability time base.
Anyway, the first thing after setting the GPIB address to something
that did not
On 1 January 2015 at 17:03, Andy Bardagjy wrote:
> Sounds like the GPS receiver is hosed. I think there are two different
> receivers used in the 58503a, unfortunately I'm away from my lab, otherwise I
> could check mine. It is a standard part, and may be available on the surplus
> market.
>
>
I have two queries. Both hopefully quick to answer
1) From what I gather, the HP GPS timing receivers can be
observed/controlled with HP SmartClock. But where I download it from? I
drew a blank with Google, as well as the Microsemi site
http://www.microsemi.com/
which bought Symetricon, whic
On 16 Dec 2014 23:06, "Bob Camp" wrote:
>
> Hi
>
> What ever you do, take the extra step of checking the baseplate
temperature once you have things up and running. The Rb’s will *work* over
a wide temperature range. The region over which they will last a long time
is a bit more narrow. I seem to h
On 16 December 2014 at 13:18, Bert Kehren via time-nuts
wrote:
> I suggest you go to http://www.febo.com/pipermail/time-nuts/ back a couple
> of years and you will find every thing you ever want to know about the FE
> 5680A. Similar to the recent Lucent activity
> Bert Kehren
I did do that, and
On 16 December 2014 at 12:16, Bob Camp wrote:
> Hi
>
> One fairly important issue - the unit needs to be on a heat sink. If you run
> it without cooling of some sort, it will not run for very many years.
>
> Bob
I do realize that, but how big? Normally "the bigger the better" is
not an unreasona
I have a couple of Rb sources bought from China or Hong Kong a year or
two ago. I'd like to fix these up. Initially in a box where I can
adjust them to frequency manually, but perhaps later lock them to GPS.
Looking around the web, there are countless options on these things,
and different connecti
On 15 Dec 2014 00:52, "Tom Van Baak" wrote:
>
> If any of you want me to post more photos let me know. I have several of
every kind of HP/Agilent GPSDO product. And they are all genuine because I
bought them a decade before the China/eBay/GPSDO business.
Hi Tom,
I would appreciate some pictures o
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please)
On
On 14 December 2014 at 20:25, Bob Camp wrote:
> Hi
>
> http://www.cnssys.com/files/M12+UsersGuide.pdf
Thank you.
> On page 46 there is a pretty good chart for signal strength to c/n. The chart
> for the Motoroal GPS module in yours should be quite similar.
>
> If there is no SCPI then it’s a “f
On 14 December 2014 at 19:52, Bob Camp wrote:
> Hi
>
> SS is signal strength. There is a setting somewhere buried deep in the SCPI
> to switch the display units.
>
> Bob
I guessed SS probably was signal strength, but what values are good
and bad? There's nothing in any manual I can find that men
On 14 December 2014 at 19:32, Bob Camp wrote:
>> There are not the usual 3 holes underneath where feet go.
>
> I understand that they are different. The problem is the same though. Pulling
> a box in and out of a rack with feet or bumpers on it is a pain. They often
> get “lost” early in the in
t it says SS ranges from 0 to 255, and that 20-30 is weak. *IF* I
can assume the SS in the 58503A works the same was as SS in the
59551A, then it looks like I have 6 satellites which are not weak. But
that is a big "IF"
Does anyone have an HP manual for the 58503A?
Dr. David Kirkby
On 14 December 2014 at 02:31, Bob Camp wrote:
> Hi
>
> You see a lot of surplus HP gear with the feet pulled. That was pretty
> standard when gear was rack mounted.
>
> Bob
There are not the usual 3 holes underneath where feet go.
I would nice to be able to find a few photos of a real 58503A. D
On 14 Dec 2014 15:45, "Bob Camp" wrote:
>
>
> There are some long and detailed threads back in the archives about just
how USB works and what this does to timing.
>
> Simple / quick summary:
>
The impact on pps timing could (and often is) quite major.
I would still like to experiment with it. A
On 14 December 2014 at 13:37, bownes wrote:
>
>
>> On Dec 14, 2014, at 07:42, Dr. David Kirkby (Kirkby Microwave Ltd)
>> wrote:
>>
>>> On 14 December 2014 at 11:57, Hal Murray
>
>>
>> That command works.
>>
>> How do you reboot - ap
On 14 December 2014 at 12:39, Neil Schroeder wrote:
> Based on my recent testing - including Solaris - you will be better off
> with the Internet unless your USB adapter is far better behaved than the
> several I have here
The USB -> serial adapter I have is an Keyspan USA-19HS
http://www.trippl
On 14 December 2014 at 11:57, Hal Murray wrote:
>
> drkir...@kirkbymicrowave.co.uk said:
>> Can anyone advise if this is possible, and if so what software is needed?
>> Any idea what sort of accuracy would be achievable?
>
> I'm not familiar with Solaris. I've never worked with a 58503A, but I h
Both my computers run Solaris.
* One, a Sun Ultra 27 has a Xeon processor, no serial ports, but I do have
a good quality USB serial adapter for it.
* The other, a Sun Blade 2000, has a SPARC processor & a 25 pin serial
port.
I am using the Sun Blade 2000 to talk to the HP now, but I don't run th
On 14 Dec 2014 08:07, "Dr. David Kirkby (Kirkby Microwave Ltd)" <
drkir...@kirkbymicrowave.co.uk> wrote:
>
> If the boxes had "Yixun Electronics" or similar printed on the rear I
would not have a problem with him putting the electronics in new boxes,.
But clearl
On 14 Dec 2014 02:12, "Adrian" wrote:
>
> Same here. I have a Z3805A from this vendor that works flawlessly, and I
> know of other people that purchased from him without any problems.
>
> To call it a cam when a HP unit comes with a remanufactured box is quite
> a harsh statement, IMHO.
>
> I'm gl
On 13 Dec 2014 19:41, "ed briggs" wrote:
>
> I’ve never had a problem with this vendor.
> I’m sorry to hear you are having difficulties with your 58503a, but on
the basis of my experience, I would not call this vendor disreputable, as
others seem to be suggesting. I’d suggest sending him an emai
On 13 December 2014 at 11:13, Dr. David Kirkby (Kirkby Microwave Ltd)
wrote:
> I have a counterfeit 58503A which appears to run warmer than I would
> have expected. I'm not sure if this may be by design, or if there is a
> fault, or maybe there is simply not enough ventilation
On 13 December 2014 at 13:03, Bert Kehren via time-nuts
wrote:
> Ebay does not protect buyers and it is understandable. Look at the # of
> your buys and the # of the seller. I can tell you horror stories and in the
> case of
> _ggg*fitting_ (http://www.ebay.com/usr/ggg*fitting?_trksid=p2047675.l2
On 13 December 2014 at 06:55, David J Taylor
wrote:
> Or get a more modern using such as the LTE-Lite evaluation kit. I see a
> 19.2 MHz version as item 171504588307, but 10 MHz and 20 MHz versions have
> also been made available. It's a lot smaller and lighter than last
> century's kit, and mig
On 13 December 2014 at 05:13, Peter wrote:
> On 12 December 2014 at 08:31, Dr. David Kirkby wrote:
>
>> This has been reported to eBay by telephone, reported to the police, and I
>> will soon create a case on
>> eBay, and report it as a fake. I have a crime reference nu
As you will have gathered from my posts on this mailing list, I bought
something from eBay that was supposed to be an HP 58503A:
http://www.ebay.co.uk/itm/271642102264
But I have every reason to believe has a new case and serial number
label fitted to the old chassis. The serial number just fell
this scam, rather
than just get my money back and let the problem persist for others.
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymi
On 11 December 2014 at 01:10, Bob Camp wrote:
> Hi
>
> I suspect that if you look closely at the board in the unit, it’s got water
> stains on it ….
>
> Bob
This was bugging me too much, so I decided to open it to find out.
Sure enough, there are rust signs in it. One can also see clear
evidence
On 12 December 2014 at 03:54, Peter wrote:
> Hi David
>
>> "The fact it does actually work, probably indicates there's nothing too
>> serious wrong with it."
>
> In my opinion, you potentially (pun intended) have a very serious problem.
> Your LOG shows the 15V supply rail out of tolerance at 1
On 11 Dec 2014 21:52, "Bert Kehren via time-nuts"
wrote:
>
> who did you buy it from?
>
The seller was yixunhk on eBay.
That information was in the title and first line of my original post.
Dave.
___
time-nuts mailing list -- time-nuts@febo.com
To uns
Hi Stuart,
Several people have contacted me about the fakes. I can't understand why
his feedback is so good. The seller bought some calibration standards from
me which I clearly stated were damaged. I did at the time notice they left
about 25% negative or neutral feedback, so was expecting that,
On 11 December 2014 at 01:10, Bob Camp wrote:
> Hi
>
> I suspect that if you look closely at the board in the unit, it’s got water
> stains on it ….
>
> Bob
I suspect you might be right Bob, but I am not going to break the seal
to open it up to find out. I will be contacting the seller, to see
w
I see this on eBay - it might interest some, and at $10 it will not
break the bank
http://www.ebay.ca/itm/1968-Scientific-American-Magazine-Cesium-Clock-Standards-Measurement-DNA-Dis-/381078816062
BTW, does anyone know why the Amateur Scientist column was dropped in
Scientific American? Perhaps t
On 10 December 2014 at 10:09, Jean-Louis Oneto wrote:
> I have a pdf file in which I have already reunited the user manual, the
> schematics, several application notes. The format of the pages are mixed:
> most of the manual is in A4/Letter, the schematics are in A3. I have added a
> full table
I have ordered a ST620 and decided to get a hard copy manual. But the
thoughts of paying Stanford Research $100 for one are not overly
attractive. A more sensible approach to me is to download the manual and
get it bound. I found a company in the UK that can do it for a lot less.
I thought it wou
On 8 December 2014 at 07:24, Chris Wilson wrote:
> This is audible here in the UK and elicited many comments on 160
> meters last night. Seen as oblique striations on SDR receiver displays
> and audible as a clicking sound. What the devil is it?
>
>Best Regards,
>Chris
On 7 Dec 2014 18:59, "Bob Camp" wrote:
> >
> > There is always
> >
> > http://www.geo-ship.com/
> >
> > which searches all eBay sites except those that use obscure characters
> > like China.
> Right, but now you need to put in every possible spelling of anything
that might reference to what you
On 7 December 2014 at 15:55, Bob Camp wrote:
> The real issue is:
>
> Do you want to spend hours a day doing searches on eBay for all sorts of
> weird spellings and listing conventions? Do you want to search all of the
> various eBay sites throughout the world? When any single piece one of a ki
On 6 Dec 2014 21:10, "paul swed" wrote:
>
> David
> I picked my unit up for $125 at a Hamfesyt and the tube was absolutely bad
> as it turned out. But then what do you expect for the $. That said another
> time nut gave me his dead tube from a 5060. I spent a good deal of time
> getting it adapted
On 6 December 2014 at 17:58, paul swed wrote:
> Well a bad tube is a bad tube and thats been my story. Though for $125 how
> can I complain. But for $999 plus $79 shipping no interest at all.
> When the tubes used up its used up. Generally.
> Regards
> Paul
> WB8TSL
I just offered them $250 for i
On 6 Dec 2014 18:33, "Bert Kehren via time-nuts" wrote:
> be done, the real issue who would buy one people that need
> Cesium will pay the price for a new one and time nuts would not spend the
> money for a working rebuild tube. Where is the market?
There's a professional market for thermionic
On 6 Dec 2014 17:58, "paul swed" wrote:
>
> Well a bad tube is a bad tube and thats been my story. Though for $125 how
> can I complain. But for $999 plus $79 shipping no interest at all.
> When the tubes used up its used up. Generally.
> Regards
> Paul
> WB8TSL
I have never looked a tube, but wh
al to replace the tube?
Dr. David Kirkby Ph.D CEng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK.
Registered in England and Wales, company number 08914892.
http://www.kirkbymicrowave.co.uk/
Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT
On 5 Dec 2014 20:05, "Dave M" wrote:
>
> I finally took an ineterest in this thread, because I have needed (rather
infrequently) a way to get LED light from a PCB to a front panel. I
Googled "flexible light pipe" (no quotes in the Google search) and got
loads of hits for them. So, I guess they'r
On 5 Dec 2014 13:19, "Chuck Harris" wrote:
>
> I think the name "light pipe" has been supplanted by fiber-optic.
>
> -Chuck Harris
Technically I agree that they have a lot in common. But I think the large
devices, which are often not cylindrical, are usually called light pipes.
http://uk.mouser
On 5 Dec 2014 12:23, "Bob Camp" wrote:
> Shipping across the atlantic has become silly expensive over the last
decade. There are a *lot* of organizations that are behind the curve on
figuring out how to do it cheaply.
>
> Bob
I ship VNA calibration kits across the Atlantic almost every week -
ad
On 27 Nov 2014 13:56, "Jim Lux" wrote:
>
> Time to stock up on those transformers, mixers, amplifiers
>
> "Throughout the month of December, all online orders of any quantity of
any Mini-Circuits catalog model from our web store on minicircuits.com will
receive a 10% *discount!
> "
I thought I wo
On 5 Dec 2014 07:05, "David J Taylor" wrote:
>
> David it always does a survey. Though even while doing that the frequency
> output is fine after its had a bit to stabilize. I wanted to bring the
> survey lamp out to a front panel LED however that appeared to be more work
> and risk then the value
On 28 Nov 2014 02:06, "Don Latham" wrote:
>
> I’ve just replaced the SR620 oxco option 01 with a Morion, by simply
adding a 7812 to the 15 v heater
Did the SR620 have option 01 before you did the mod?
In other words, did you change to the Moxen because you believe it is
better than Stanford Res
On 3 Dec 2014 02:08, "James Robbins" wrote:
>
> Brief update:
>
> This receiver (whatever it is) refuses to "forget" 1995 despite
un-powering, etc. I will learn to live with it, I think.
You could report it to the seller as a fault. He must have quite a bit of
experience on these.
Another optio
On 2 Dec 2014 03:10, "wb6dgn_...@att.net[hp_agilent_equipment]" <
hp_agilent_equipm...@yahoogroups.com> wrote:
>
> Isn't the 10811 a "double oven" oscillator (an oven within an oven)? I
also believe it has anticipator circuitry to predict changes based on
environmental parameters. Or...am I confu
On 1 December 2014 at 16:54, Bob Stewart wrote:
> I've just won a "Symmetricom / Datum PRS45A PRS45-0001K - Single Cesium
> PRS-45 DS1" on ebay from a guy in the Netherlands.
$900 seems cheap. I'm surprised you made an offer when it was $975. I
bet you would have been sick if you lost it!! It so
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