Hi List,
Besides a four sail ad, it's a bit of a bottom feeder story.
Several weeks ago, I made a post of 3 R-338's for sale. One was missing the
S-meter so I listed it a *parts unit*.
I also stated that FedEx shipping based on my experience for the units with
cases would be in the $125 range e
List,
I'd like to do 1000 second TIC measurements with my 5370B but I don't want to
have to perchase A HP 1B prologic or similar controller for the timeing.
As long as I'm interested in the TIC difference but not an absolute value is it
reasonable to use the manual start/stop switches and a st
List,
Is it practical to try and convert a HP 5370A to the B model. (I know that a
dedicated TN could do it.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Esteemed List Members,
I have four new Midland glass encased 3.00 MHz HC 6 case style available.
Each one was given a S/N and were ordered for Hallicrafters circa. Ovenized
they would be excellent although I don't now what oven temp was specified.
Best guess is 85 C.
I can send world wide
List,
the item has been spoken for.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Esteemed List Members (was Yo Dudes)
I have a HP 3455A 6.5 digit DVM that has stopped working. When turned on it
fails to complete the self-check routine. The display lights briefly.
I will send it to anyone who will pay shipping from 92220, Banning, CA. 17 x 20
x 3.5 inches. Approx 20 pounds.
Yo Dudes,
Should one consider retrofitting HP 105's, Austron 1250's or HP 10811 power
supplies with the LT3042 for better performance? The price is modest. The HP
10811 suggested PS for the EFC is a 723 circuit that spedc's 6 microvolts
ripple IIRC.
Regards,
Perrier
_
List,
In getting documentation together for my HP 107BR I discovered the manuals I
was able to aquire were for prefix 333.
My unit prefix is 708. Does anyone have that prefix schematics or an errata
sheet? Or does the 708 prefix just designate another factory run?
TIA
Perrier
__
List,
When perusing HP xtal oscillators on ebay I noticed some cases were marked HP
10811 and the same appearing unit was marked HP 10811-60111.
Are both the same for TN purposes?
If so what are the differences?
Regards,
Perrier
___
time-nuts mailing
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
List,
I bought the HP 107BR from ebay. It arrived very well packed and is as new on
the inside and 9.5/10 on the exterior. It requires a special A/N connector for
the AC power.
I also bought the Artek CD and D/L rhe manual from the K4OOB site. I
discovered that my model is of a later revision
List,
I have a 117 receiver that I never got round-to-it.
The tag on the unit sayes one tube is weak. I have at least one extra tube
(6CW4 IIRC) and more likely two.
It's avaiable for shipping from 92220.
If interested please send an ORIGINAL email off list.
Regards,
Perrier
_
List,
I've been following the ongoing mod process for the HP 5065A super on the list.
Two questions:
1. Are any of these upgrades applicable to the Lucnet and other Rb units?
2. Are there any other Rb units available (that don't cost you your first born
child IF they can be found) that could be f
Hi,
I have a HP 420B Clip On DC Milliampmeter with Probe FS as I’mmoving in the
spring.
Current measured goes from 1 mA FS to 10 Amps FS.
I have not used it since I bought it several years ago. The reliable vendor
who sold it to me had guaranteedthat it worked. Will guarantee it
is
Hi,
I have a HP 54501A 100MHz digitizing o’scope
Two probes (notoriginal)
1ea HP 54501ADigitizing O’scop Front panel Operation Reference
1ea HP 54501ADigitizing O’scope Programming Reference
Screen is razor sharp. When first turned on a message shows in small type “cal
ram
Hi,
Amongst my rubble I found 4 more HP test equipment catalogs.They are 1982,
1985, 1987, and 1991. $10each plus shipping from 92220 or $50 plus shipping
for all four. Yes, $50 for all four as I’ve got to put themin a box.
If interested, please send and ORIGINAL E-Mail. If you do a re
Hi,
Amongst my rubble I found 4 more HP test equipment catalogs.They are 1982,
1985, 1987, and 1991. $10each plus shipping from 92220 or $50 plus shipping
for all four. Yes $50 for all four as I’ve got to put themin a box.
If interested, please send and ORIGINAL E-Mail. If you do a rep
HI,
At the request of a TN member (who wishes to remain anonymous)I started to
reproduce:
The Quantum Physics of Atomic Frequency Standards Volume 1By Jacques Vanier
Division de Physique,Conseil National de Recherches, Ottawa and Claude Audoin
Laboratoire de I’Horloge Atomique, CentreNatio
Thanks for all those that replied.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Hi,
I have a HP 8590A that I got from Bob Camp in a trade. In the spring we will
be moving so I'm shedding some of my large TN gear.
I works OK but it may need to be cal'd if one wants precise mearsurments.
$365 plus shipping from 92220 about 30 lbs.
Regards,
Perrier
___
Hi,
I received an unexpected lost money just at Christmas time.
I had my eye on a GPSDO Symmetricom Inside GPS10MHz 1PPS GPS Disciplined Clock
& GPS Ant Display Refurbished $209.99 radioshackus.
It has a LCD display the shows some sat data.
At his time I'm not planning on running Lady Heather but
…
The 105B was a 1960’s
creature that had a 5 MHz crystal in it already.
Bob (who probably has eight typos in the sentence above :)
> On Apr 9, 2017, at 2:46 AM, Perry Sandeen via time-nuts
> wrote:
>
> List,
> Since I've been babysitting this unit for 20 years or so waiti
List,
Since I've been babysitting this unit for 20 years or so waiting for a-round-it
to arrive its probably to to pass it on to someone who would revive it.
It is a 100KHz ovenized crystal with an external reading mercury thermometer.
It has dividers down 100Hz and is equipped with a 2 inch sco
The unit has been sold.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
List,
I'm selling my HP 105B that has been "cooking" for the last 6 months and the
meter readings are all in the OK region and has a 5 MHz output which hasn't
been calibrated.
It has the pre-10811 10 MHz oscillator type and the PS is the of the earlier
version where the regulating transistor is
List,
I am selling my Austron 1250A. The meter readings are all in the OK range and
has a 5 MHz output which I've not calibrated. It's in good cosmetic condition.
It comes with the factory manual,extender board, relay rack mounting brackets,
spare fuses and a AN connector for attaching an extern
List,
I'm culling my too extensive test equipment inventory.
I have two NBS System 358 Frequency Measurement Computers for sale
It works like this: You have a 5 MHz "A" input for your standard and a 5 MHz
"B" input for the DUT.
The computer has a "B" offset output that multiplies the error to 300
List,
The discussion about building a H Maser has been fascinating however it appears
that there will be a long time period before the project reaches fruition.
My questions for those that have a H Maser are:
Where and when did you get it and what was the cost?
Exactly what do you have to do to
List,
A while back there was much discussion about temperature sensors.
One simple inexpensive one to consider would be the ZNI1000Temperature sensor.
It's 1K ohms at 0C and it replicates the temperature curve of the Pt 1K ohm
sensors.
It's about $3 from Digi-Key.
FWIW YMMY
Regards,
Perrier
_
List
It looks like their is as infinitely small chance of being able to get 5065.
So what can be done with the telco Rb's (mine are analog tuned) to wring the
best possible performance from them? Sooper Duper power supplies, Peltier (sp)
cooling modules?
Regards,
Perrier
List,
I recently bout a couple of USB male to USB male cables from Newegg.
About two weeks later I received a catalog from: Brake Manufacturing LLC.
They make inter-connecting cables for almost any type of connector with almost
any type of co-ax as well as selling almost any RF connector one c
List,
There is always going to be some top posting however it has been six or seven
pages long multiple times lately.
I save all these on MS word for reference later. How about shortening these at
least a little bit please?
Regards,
Perrier
___
time-nu
List,
Fair Radio which has been in the surplus electronics business almost forever
has two models of Fluke standards for sale. They have a sterling reputation.
FLUKE-332A $100 Voltage Standard - Used Reparable
FLUKE-332B $125 Voltage Standard - Used Reparable
IIRC, this means they will
List,
After all the problems that Bob Camp has noted with surplus OCXO's from China,
perhaps buying the new Lucent units on Ebay may save bad words and/or unhappy
actions.
LUCENT/SYMMETRICOMKS-24361 L101, Z3812A, RFTG-U REF-0 UNIT -CASE OF 2 EACH
$80 So for about $50 each delivered one has two
Hi,
Wrote:I am the proverbial man with too many clocks and I don'tknow what time
it is.
To correct this situation I have decided to calibrateeverything.
I have a HP 5370B, a HP6370A, and a HP 5328A all with the TCXO
option.
Hi Peter,
You can't really calibrate the 5370B oscillator. I tri
List
Time may be relative, but physicists are a stickler for accuracy.
While many of us may give a few minutes’ grace to the timepieces in our homes,
one group of scientists has successfully synchronized a pair of optical clocks
to within a million billionths of a second.
By measuring time to
Hi,
I have rehabed three houses that I have owned that have cement basements. All
three were in Colorado.
Bare concrete will weep moisture. The solution is to paint (actually spread) a
product made by UGL. It is $125 for a five gallon bucket. It is a latex based
product that seals the surfac
List,
Two Points
1. Switching regulator power supplies are here to stay and will replace most
transformer types as the are cheaper, smaller, and more energy efficient. They
have improved to the point of being used in medical equipment for patient
monitoring equipment that picks up milli-volt si
Hi,
The battery problem becomes more convoluted every day. Due to family medical
issues I have not been able to do any testing/repairing.
The 105B charger is set up for nicads using some selected un-alterable charging
rate so to use an internal lead acid setup requires a different ps.
My unit p
Hi,
In the two HP 105B's I recently acquired both had the 10 Mhz 3010A series
oscillator which appears to be pin for pin compatible with the HP 10811 series
but it has a resistor value listed on the outer case.
Trying to research it, the HP 105A/B supplement vaguely said to take a look at
the HP
List,
WTB for HP 105. please contact off list if you have one for sale.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
List,
I Goofed.
The 2848A late model info is on is on Dider's site as a HP 105B "Supplement".
The HP *Supplement* instructions are: butcher a perfectly good earlier model
service manual add info here and delete info there, pencil in changes making
the original manual a piece of garbage.
They were
Hi,
Thanks to all who replied and made the lite in my brain go on.
Probably a great niche product but not for me.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/tim
Hi,
Thanks for all the suggestions for the ski but I still have drawn a blank.
However I was able to get a large amount of similar data of of Dider's web site.
And thanks Charles for your phase noise postings. More for me to learn.
Regards,
Perrier
List,
Several years ago we were enthralled by the NIST designed Cs that still needed
cal once in a while.
It was listed for sale IIRC for $1400 or so.
Since then it has seemed to have fallen off of the radar screen.
Does anyone have any follow-up info?
Regards,
Perrier
___
Hi,
I bought a HP 105B that is a later version. All the manuals I've searched for
end up being for the original version.
My S/N prefix is 2848Ao or 0.
Plse reply off list if you have even just a ski.
Regards,
Perrier
___
time-nuts mailing list -- time-nu
List,
I purchased a HP 105B oscillator on ebay and it arrived today. Previous to
getting it I D/L the manual and brief;y perused it.
So when I popped open the top cover to see the internal parts, what to my
wondering eyes appeared Not the A1 module shown in the manual but a 10811
lookalike.
Th
Hi,
Several (many?) years ago National Geographic magazine show a picture taken
here in southern California of the state government sending red laser signals
between different mountain tops to keep track what was going on near fault
lines.
There were no technical details on what was taking place
The manual has been sold.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
List,
I have a HP 5335A counter factory manual VGC.
$20 PLUS postage from 92220.
Please reply off list if interested.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/tim
List,
I have 5 HP Test and Measurements catalogs which I will send for postage from
92220.
The years are 1982, 1985 (2), 1987, and 1991.
These are heavy suckers (bound books. I estimate postage to be $10 per book.
Please reply off list if interested.
Regards,
Perrier
List,
Usedoscilloscopes have gotten to the price where us experimenters can
affordexcellent ones at reasonable prices (my Tek 200 MHz dual bandwidth
was<$200).
I wastrained how to use them in the military but many haven't that experience.
Insorting out my papers I found a HP Bench Briefs ti
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 was involved with repairing HP medical equipment for 25 years and it was
awesome stuff. This was the same info I got from other BM
Hi,
One comment posted a while back warned that if the Morion OCXO's reached the
limit of their EFC range the could not manually re-tuned as others are.
That said, the newer ones posted seem to be using Trimble OCXO's.
Regards,
Perrier
___
time-nuts mai
Hi,
Wrote: Since the front end chips are mixed signal ASIC’s, it will take more
than a bit of time to replace them directly. Re-doing the entire front panel
board is the most likely way to “fix”the problem. The question is - why do that
at all? Just do a PC instrument that does the same thing as
List,
I'd like to buy up to 60 HP type II feet. I don't need the metal bail but it
would be OK to have also.
Please reply off list with amount and price. I also have some TN HP test
equipment that could be used in a trade/cash deal.
Regards,
Perrier
_
Hi,
I have six of the older style (anodized solid aluminum case) Lucent crystal
oscillators that I’d like to turn into simple 10 MHZ output GPSDO’s. I have
some salvaged HP cases so I can have a linear PS and all other stuff in one
package.
I’ve found two different choices of GPS relatively low
Hi,
Wrote:No, the temperature is not stable, not even close.
Wrote:Given that the TL431 is quite good at measuring temperature, that makes
itunsuitable in this case.
Wrote:There is a LOT more to making a good temperature-controlled
>environmentthan hacking together a DIY oven. Thatmay be f
Hi,
Wrote: A possible solution mightbe to use two of the TL431 programmable shut
regulators. [Snip]
Wrote: That would be worse thanwhat is in my 5065 now.
OK, but why? The temperature would be stable so the resistorsand reference
diode wouldn’t drift.
Is the TL 431 not sufficient
Hi,
A possible solution might be touse two of the TL431 programmable shut
regulators. One to replace the zener diodeand the second to form a simple oven
using a thermistor and pot to set thetemp.
See: http://www.techlib.com/electronics/ovenckts.htmand TL431 data sheet for
details.
Then
Hi,
On the EEVBLOG (http://www.eevblog.com/forum/index.php)
They mention that the "2014-11-06"version GPSDO that was “most extensively
tested, so far (by ke5x and others).
(Has a) known bug, outputfrequency is not exactly 10mhz (9,999,999.999,800 Hz).
This translates to ~2hzerror at
List,
http://www.dailymail.co.uk/news/article-3045499/Longitude-clock-stuns-experts-keeping-accurate-second-100-days-300-years-designed.html
Personally I’m blown away howsomeone can homer brew a mechanical clock like
this.
Regards,
Perrier
List,
I want to thank all the memberswho have answered my questions, many being you
really don’t want to do this andhere’s why as well as the current group that
generally posts to the list. I really don’t want to learn by trying thingsthat
have failed for others proving again to myself that
List,
There has been a lot ofinformation on the list for 5 MHz frequency doublers.
As it is easier for me to buythan make, would using something like a
Mini-Circuits surplus DBM’s be anacceptable way to go?
Regards,
Perrier
___
time-nut
List,
There has been a large exchangeof ideas for various home-brew or other video
box alternatives which all wouldseem to work OK.
For me it was simpler to buy asurplus HP 5087A for best offer which turned out
to be $300 delivered.
Besides having 12 outputs, youhave a choice of 3 inp
List,
It appears from Bob Camp’sexperience (and others) that the Chicoms Morion
oscillators are to be avoided.
My question is: Could Bob Camp,Rick K. and other gurus with experience come up
with a list of the Ebay 10 MHzsurplus oscillators that would be worth buying as
well as what would
List,
I won a 5370A from ebay. Though it seems to be missing the A channel level
knob, the unit was shown powered up with the correct 0.0 on the display,
although the unit was sold as non-working for parts or repair. But the price
was right with a best offer accepted.
So assuming (gulp) that th
List,
This TL 431 temperature regulator circuit might be useful.
www.techlib.com/electronics/ovenckts.htm
Regards,
PerriersandeenpaXXyatXXyahoo.com
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailma
List,
Many, many years ago I think it was in EDN magazine that a circuit was
published that used two LM 723 regulators.
One was used as a heater circuit and the other as a voltage regulator.
I lost my paper copy in moving and found that that particular circuit is behind
a paywall.
If anyone has t
List,
I have reproduced a Motorola Lightning Protection article from the PPRA
newsletter from the early 80's.
If anyone wants a copy please send me an ORIGINAL email off list and I'll send
you a PDF.
I will also post a copy to Didier's web site in a few days.
Regards,
Perrier
List,
My two new OEM Lucent sets arrived today. As I suspected from reading the
previous posts, they are a total kettle of fish different from the older
*yellow finned* series.
Because I already have five of the *yellow finned* units I want to keep all my
Lucent units the same style.
I'm willin
List,
I have seen on the net a 10 MHz filter using 10.7 IFtransformers but have no
idea how well they would work for isolation with thenew style Lucent boxes.
Thoughts?
On Ebay venders are offering 10 MHz crystals for almostnothing if you buy 30.
My question wouldthese be good for ma
List,
Wrote [Snip] The chain in the Z3810 / 3811 / 3812 Lucent
boxes is *much* different than the setup in the earlier parts. The phase noise
and ADEV on the Z3810’s is better than what you got on the earlier versions.
That’s good to know. I only have the older style units. It
will be interesti
List,
I’ve digitized and edited an article titled* Circuit DividesFrequency by N+1 by
Bert Erickson, Fayetteville, NY from EDN 7/11/2002*.
Essentially, this circuit is expandable and allows for adivision by any number
plus one.
Anyone who wants a PDF copy please send me an original em
List,
Thanks to all for their comments.
Wrote: The high grade aluminum electrolytics and the
tantalums will look quite different on a network analyzer as you sweep them
from 100 KHz up.
OK. Since these of just being used for DC PS bypassing on
individual boards I think I’ll be OK with the Pan
Wrote: At some point we will get into hacking the main board
to switch from 15 MHz to 10 MHz.
One doesn’t have to that if one uses the two IC divide by
1.5 circuit I offered the list. I specifically found it so I didn’t have to
hack the innards.
Wrote: The great news is the oscillator is 5 Mhz
for orders. Delivery will probably be
mid Dec. I won’t cash
your check until I ship you your parts. My address is Perry Sandeen 661 La
Costa Banning, CA 92220-5317
Also if one wants one or both of the lists just for
reference, please send me an original email and I’ll send you a copy
List,
Wrote: The days of DIP parts are drawing to a close.
I was shocked, absolutely shocked, really, when I looked at
the latest Mouser catalog about the lack of PDIP I.C.’s.
That said, we are faced with a dilemma.
In all my HP test equipment I probably have 500 or more PDip
IC’s, so what
List,
OK everybody, let’s not get our pacemakers wound up
The problem. (Long Intro)
I have about 15 pieces or so of older HP test equipment.
3586B, 5370B, 5335A to name a few. Because of their age of 20+ years a few
have failed and need repair. I
have decided to go on a wholesale electrolyt
List,
The common denominator capacitor for the HP 3586 is 470 uF/
50V.
The HP 3586B uses about 18. The capacitor is a Panasonic P/N 667-EEU-FR1H471B
The common denominator capacitor for the HP 5370B is 105C /
6,000 Hr. 150 uF / 50V. The 3586 uses about 20.
I am willing to sell them for c
List,
I've assembled three PDF documents for the HP 3586B. An electrolytic capacitor
replacement list, a
15 KHz IF pick-off doc and the Beethoven audio test. You get three for the price
of one: FREE.
If interested, please send me a new email off line.
Regards,
Perrier
___
List,
I have just finished digitizing and repaginating *Modifying Lucent
RFG-M-RB Rubidium Frequency Standard* by Ivan Makarov. (m...@makarov.ca
Copyright
© 2011 VE3IVM).
He has made many modifications to solve a number of problems
that have been mentioned on the list lately.
If anyone wants
List,
Wrote: You're looking for the older
Rockwell/Conexant/Navman Jupiter-T ones. Some default in Motorola binary
compatibility mode, with only 8 channels visible. Due to scarcity they are
getting way too pricey...
You might be better off with the newer uBlox NEO/LEA-6T,
with configurable outp
List,
Wrote: where is a good source of GPS receiver modules I need one which has
10kHz output to phase lock a quartz oscillator.
Fluke.1 Motorola ONCORE M12+T timing gps receiver
1pps 100hz eBay item number:290656401551
Also RDR
There is another china seller that has them(10KHz)
with
All,
The REF 102 from TI is a +10 reference with a TC
of 2.5PPM/max. Using two 1% 50 PPM metal film Xcion resistors on can make a +5
V regulator that is
far superior to a 7805. Cost is about $7
from mouser.
If one needs to have an adjustable resistor in a
circuit perhaps one of the digital po
List,
>What I am looking for is a way to display
Local Time (MST) and Zulu (GMT) time in a small (6" X 8" or similar)
package. There must be two displays and both lock up to NBS. Has anyone seen
such a thing?
Hi Martin,
If you look on Ebay and type in LED automobile
clocks, there is a large s
List,
Tonight on the news they reported that an EMS helicopter
had to make an emergency landing as the pilot or co-pilot was blinded in one eye
by a green laser. As of the report time his
one eye was still blind.
Now that the proverbial feces has hit the old fashioned
rotater cooling mechanism
List,
I have four 5370b units. Two of the three lost the frequency input
channel while I was using it for long term frequency monitoring. The fourth
unit I bought for “parts or not
working” had the same frequency input problem.
Do we see a trend here?
Verifying that the input switch(s) are
List,
Wrote >The point is that this only makes it
cheaper. It is still a PC running Windows
in some other room.
Not exactly. You missed what I was trying to say about programming: which was
I can’t
do it and don’t want to learn how to do it. It’s just not my cup of tea.
It is a cheap m
List,
I have no problem with someone porting LH to any
device of their choice.
But at the Huntsville, AL hamfest this last weekend
there were a number of fully functional laptops for $29. I didn’t check what OS
they were using.
Sure they are about as old as dirt however they
are great for g
List,
List,
The four 5370B TIC’s that I have all have the
10811 high stability oscillator installed. AFAIK there is no provision for
doing EFC. Doing a mod to add it seems
relatively simple.
My question is: Is it worth the effort to add EFC? My concerns for not doing
it are the
way the co
List,
I bought one of them for several reasons besides
that I really wanted it.
1. There is
plenty of real estate to install Paul’s demod circuit.
2. It is
large enough so the nuvistors can be replaced with dual gate mosfets (I have
lots of them). Also sometimes replacement nuvistors ca
List,
Wow! Thanks
for all the good advice shared on and off list.
I guess that I didn’t make clear is that I really
don’t need anything below 100 KHz. I bought my 3585a for its upper range to 40
MHz for use with HF receivers.
One great idea suggested that I never thought of
is to get a sco
List,
I just purchased a HP 3585 spec analyzer on E bay
for a reasonable price. I wanted this
instead of the 181 series as the range was more to what I’d be using and it was
of a newer vintage. The 3585a goes from
10 Hz to 40 MHz which is a most useful range for my purposes. so far, so good.
Charles wrote: Please keep your political comments
to yourself and off the list (however humorous you might think they are). This
is simply not the place for them.
Charles,
On the two lists we both subscribe to, you always
seem to have something to say about almost every post. Often it fa
Hui and all,
You have absolutely NOTHING to fear. Here is why:
If in the USA it was found that it MIGHT possibly
hurt something on the endangered species list [Humans might count also in some
situations.] The following would happen.
1. A Transportation
Security Agency [1.6 Billion bullet
List,
Another economical way to auto regulate your AC voltage is using servo
motor voltage regulators.
They are a bit strange but the ones I’ve seen seem
to work well, even the cheap ones from China. But do check that they have a
fuse. They also have a trimming pot inside if you want to
To all my fellow list heretics who believe in
change before failure,
I have put together a list of AFAIK, all the electrolytics
from the 5370B service manual, their location, and possible Nicicon 105 C rated
capacitors for replacement.
Not on the list, but what I plan to do when I
replace all
List,
I was looking on Ebay for some HP E1938A
oscillators
What I found listed were:
HP E1938A 10 MHz Quartz Oscillator with EFC on PC
board. $100 Fluke.l
HP E1938-60201 Ovenized Crystal Oscillator (on a PC board) $100 Tomy Chou
HP E1938A Ovenized Crystal Oscillator W/O a PC board for
List,
I'd like to buy or trade for a working HP 117A. I don;t need the HP antenna.
Please contact off line if interested.
Regards,
Perrier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to htt
1 - 100 of 205 matches
Mail list logo