[time-nuts] HP 3586 Problem

Esteemed Gurus, I was checking out two operational HP 3586B’s which I normally use for RF work on the lower frequencies and found out one would not sync below 300 KHz or so and the other below 200 KHz on the Fo rear output connector. So I contacted my friend Mike Fisch and asked him to do the

[time-nuts] Equipment for sale

All, We are moving to a small condo in So CA so I want to shed some equipment. I have a HP 5350 Microwave Frequency Counter for sale. It measures from 10Hz to 20 GHz. Sensitivity rated as -40 dBm. It has an acquisition time of 20-60 ms and up to 120 measurements per second. It is fair looki

[time-nuts] Contact needed

Tisha Hays please contact me by L-L. 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.

[time-nuts] Feldmann guide to the HP3586A/B/C

Gents, Wrote: There are a number of paragraphs with the same number and Appendix C is missing all the schematics. PS both the links go to the same document. Wrote: original was edited by a third party (including in particular the paragraph headers) around the time that Mr. Feldmann died. I d

[time-nuts] OCXO shock protection

All,   We will be moving to southern California in the near future.   My question if for people who live in that area is do you need to do additional shock mounting for OCXO’s because of the ongoing, usually minor,  earth tremors that take place?   I will be running two of the Lucent units and tw

[time-nuts] Have 10 MHz need 19.2 MHz

List, Another hardware possibility.    Double the 10 MHz to 20 MHz.   With another circuit of 74HC390’s divide 10 MHz to 200 KHz.  Then double it twice to 800 KHz with LM 1496 DBM’s.  Apply the two frequencies to a LM 1496 DBM and use a LPF to get the 19.2 MHz.   Hardware complicated?  A bit. 

[time-nuts] WWVB Demodulator Ckt.

All,   I have used photoshop to clean up so it is easier to read and expanded a bit both of Paul Sweed’s D-PSK-R costas loop circuits.  I changed the schematic to a bit image and it is a TIFF file so one can take it to FedEx office or similar if one wants a large copy.   I will send a copy to any

[time-nuts] Carrier meter

List,   Wrote:  I have noticed that my Carrier meter doesn't consistently go to Zero. The Meter itself seems fine.   Your questions are answered in the Y2KR3 manual.  See Chapter 11.    While all on the list are willing to help, much angst and lost time can be avoided by perusing chapters 9 and

[time-nuts] VE2ZAZ controller

List,   The VE2ZAZ is a very clever design, but its design limits its usefulness to many of us.   First, one has to be able to program a microprocessor.  This is a non-starter for many of us.   Secondly you have to have a different program depending on which 3586 one has or sub-set thereof.  If y

[time-nuts] HP and other equipment failure

All,    There has been an on and off discussion of equipment failure so I’d thought I’d add my experience.   First I’ve been repairing HP equipment since 1976 before many of you were born.   I now have over 16 pieces of HP test equipment and several units now need repair.   In my experience, the

[time-nuts] WWVB and Free Democracies Survival

America and would not be subject to problems of diurnal shift or the new modulation scheme. Baring an improved WWVB signal strength us time nuts may be forced to install 20 to 30 ft. loop antennas when the new system is finalized for an adequate signal. Regards, Perry Sandeen

[time-nuts] Have 10 MHz need 19.2 MHz

List,   My reply to Javier Herrero   P  Double the 10 MHz to 20 MHz.   P  With another circuit of 74HC390’s divide 10 MHz to 200 KHz.  Then double it twice to 800 KHz with LM 1496 DBM’s.  Apply the two frequencies to a LM 1496 DBM and use a LPF to get the 19.2 MHz.   P  Hardware complicated?  A

[time-nuts] MAS6180 chip

Paul, Where does one get the chip?  I had no luck with Mouser or Digikey. Also on the data sheet they showed the chip in a 20DIP package.  Is it available.  It will be dead bug circuitry. Regards, Perrier ___ tim

[time-nuts] HP Neat Retrofits

List,   Check these out on ebay   5370A W/Rubidium.   Item number: 321147995106.  Slick, but I wonder about the heat issue.   HP 3325B W/Rubidium.  Item number: 300907767545. Very nicely done.  IMHO, fairly priced.   Regards,   Perrier _

[time-nuts] Spectracom 8164 Hack?

List,  There are several Spectracom 8164 receiver available on Ebay. My question: on the front panel bank of frequency selection switches, the left hand switch is marked .1MHz.  Is that really a 100 KHz (for LORAN) setting or is it really tuned to WWVB? If it truly is tuned to 100KHz can it be

[time-nuts] 60 KHz receivers

List, On Ebay I stumbled upon a site called pv. electronics from England The site offers a 60 KHz SYMTRIK Radio Time Receiver Module W/100 MM Antenna for $25 delivered.  I don't know if this will work with Paul Sweed's circuits or not. It looks like the stu

[time-nuts] 60 KHz receiver number

List, 60 KHz SYMTRIK Radio Time Receiver..Item number: 230991713311 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.

[time-nuts] GPS receivers W/timing outputs greater than 1PPS

List, RDR electronics in Colorado has Motorola M12+ OnCore GPS Timing Receiver 3V 1pps 100Hz for $20. They also have other GPS units.  Cheaper than chicoms and guaranteed.  Stock varies so check from time to time if you don't see what you need. I'm a multiple happy camper customer. Regards, P

[time-nuts] RDR Electronics

List, Wrote: But do they have a actual website. I did not find one or a webstore? How is it you even knew they had the items??   1.  This is what I found on  google search:   RDR Electronics Inc www.rdrelectronics.com/‎ RDR Electronics Inc. 7045 S. Fulton St. #230. Centennial, CO 80112. Voice 303-

[time-nuts] Regulator Choices

Wrote: Consider using a LT1083 7.5 Amp regulator.    Well it is $14 each.  The LM 1084 5 Amp 1s $2.43 each   Hefty premium for an extra 2.5 Amps.   If one needs greater than 5 amps, the LM 1084 data sheet shows how to easily parallel 2 or 3.   What’s in your wallet?    Regards,   Perrier

[time-nuts] Answers to regulator choices comments

Wrote: If you are in the US (maybe elsewhere) you can request two free samples.   That might work for projects on and two, but what about projects three and onward?     Wrote: I suppose that the same philosophy [paralleled regulators] would apply to getting more power with a 7805 farm.   It does

[time-nuts] Dual-bandwidth loop for VCO phase lock

List, In sorting through my mountain of old papers preparing for our moving, I cam across an article that I had saved from Electronics magazines  "Engineer's  notebook"  in 1975. The article was titled "Dual-bandwidth loop speeds phase lock" I OCR'd it and re-drew the illustrations and schemat

[time-nuts] Wanted: HP 117A

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

[time-nuts] HP E1938A Oscillator

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

[time-nuts] HP 5870B Electrolytic Cap List

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

[time-nuts] Dropping mains voltage

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

[time-nuts] How dangerous if a Rb lamp broken?

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

[time-nuts] Posting Rules

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

[time-nuts] Spectrum Analyzer Suggestions

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.

[time-nuts] Spec Analyzer Redux

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

[time-nuts] HP 117 from ebay

  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

[time-nuts] HP 5370B EFC?

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

[time-nuts] Lady Heather W/O a PC: Alternative

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

[time-nuts] Lady Heather W/O a PC: Alternative

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

[time-nuts] Speaking of 5370s

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

[time-nuts] Jammer Redux

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

[time-nuts] Small DPM clocks

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

[time-nuts] EFC divider resistors

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

[time-nuts] GPS W/10KHz

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

[time-nuts] GPS W/10KHz

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

[time-nuts] New precision watch

List, I saw an ad today for a Bulova Champlain Precisionist watch. It is supposed to be accurate to + 10 seconds a year. What stood out in the as is that they are using a 262,144 KHz crystal eight times the frequency commonly used. I don’t know if it is more accurate than the Seiko (?) discus

[time-nuts] HP 3586B GPSDO

List, I saw a picture somewhere where someone added a GPSDO to the back of a HP3586 but it didn’t give any details. My question:  I have the Ovenaire model 42-16 high stability oscillator but it has only four wires to the base.  Can one apply EFC to it or does one need another oscillator?  My

[time-nuts] HP 3586B Power Supply Failures

List, The other day I had my second HP 3586B power supply board smoked.  It burned both the PC board traces and the connector on the motherboard so badly it will have to be replaced.  Also an inch or so of one trace on the mother board but it looks like it will be repairable.  Fortunately I hav

[time-nuts] Holy cesium clock, Batman!-Again

wrote: >> Oops, there is currently 7 caesium clocks in my lab (not all mine) and I'm not there to protect them all. Lost count of rubidium... Observations: 1.  Envy, envy, envy. 2.  With the 7 cesium clocks you still don’t know which one(s) is/are exactly correct although it may be many decima

Re: [time-nuts] Antenna restrictions [was Lucent 40 dB Antenna]

Esteemed Time-nutters The religious answer. 1. Install antenna in as inconspicuous location as possible. 2. Go out once in a while with a white bed sheet covering your torso and head. Then (a) put a couple of cheap (even plastic) flowers near it for a day or so. Then (b) get some ince

[time-nuts] 40db antennas and HP 10811 oscillators

Esteemed Time-nutters, One might want to check our Fair Radio for both. Rock solid integrity and located in the USA. Regards, Perrier-Usual Disclaimers ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www

[time-nuts] Cheap stable frequency sources

Using 4 surplus Lucent rubidiums compared to a Lucnet GPS receiver I find a consistent error of between 110 and 860 pico-seconds using a HP 5370B after running them for about two weeks. By measuring the weekly drift one could calculate the drift. I measure the offset at about 20 milli-Hz. To

[time-nuts] AUSTRON MODEL 2100F Conversion

List, To provide a cross-check to my Lucent GPS, I recently bought a AUSTRON MODEL 2100F (bad) as I was unaware the Loran C had been shut down. But the price was $100 (good). The question becomes if it I can convert it to 60 KHz reception will it recognize the time codes and get a stable refe

[time-nuts] 60 KHz Receiver

Gents, Has anybody used a HP 3586B for a 60KHz receiver? If so, how well did it work? 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

[time-nuts] Lucent Rubidium Adjustment

Gents, I have several Lucent rubidiums that seem to be .02 Hz off at 15 MHz compared to the 15 MHz Lucent GPS. Does anyone know how to either phase lock it to a GPS of install something like a 20 turn pot to adjust the control pin frequency so an exact match may be achieved? Regards, Perrie

[time-nuts] Adding EFC

List The HP 10811 type oscillator is used for both the HP 5370B TIC, the HP 3586B SLV with the high stability option, and the HP 5335 frequency counter which I have. But none of them make use of the EFC option that I’m aware of. They do use EFC for the HP 3336B frequency generator that I have

[time-nuts] Oscillator Design

Gents, There have been a number of posts regarding oscillators and designing them. A very useful reference could be COMMUNICATION RECEIVERS: Principles and Design by Ulrich Rhode and T.T. Bucher. They devote a complete chapter to frequency control and local oscillators. It’s kind of hard to f

Re: [time-nuts] HP 3586B for 60 KHz

Gents, Wrote> Has anybody used a HP 3586B for a 60KHz receiver? If so, how well did it work? Replied >Seriously, a HP3586B would be a fine receiver for a WWVB timing setup, but way, way, overkill. Thanks. That’s great news. I have three working and can probably fix three of the other four

Re: [time-nuts] Lucent Rubidium Adjustment

Gents, Wrote https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] 60 KHz Receiver

Gents, Thanks for all the input on the HP 3586B and the Austron Loran C receiver. I’ll try to distill what’s been said. It appears that using the HP 3586B for a WWVB receiver isn’t a good idea unless I would use my HP 3336B or some other method to phase lock the BFO. Since this seems to be

[time-nuts] 60 KHz Receiver

Gents, Wrote: Its not just diurnal shift it plain old jumps anytime. Have been monitoring for periods from the east coast using both a Tracor 577 and 2 X HP vlf117 rcvrs. All kinds of stuff occur. Reply: That’s fine equipment that you have. What I don’t know but have to find out if the newer

[time-nuts] WWVB Contd.

Gents, Wrote: All of this design and mod info is wonderful and great to fill an engineering project workbook. Reply: True. I have all the precision oscillators I need. Four Rubidiums and two high stability crystal units. Four nice sized salvaged HP cases that have working power supplies. S

[time-nuts] Calibrating local standards

Gents, Wrote: Have you ever tried to adjust a local standard to better than 1 in 10E7 using WWV or CHU? Also wrote: I have three Rb standards to go along with my two Thunderbolts. Wrote a reply: And which one do you believe? If any? My experience is this: Since all four of my rubidium oscil

[time-nuts] Possible HP 10811 instability clue

Gents, Some on this list mentioned having had less-than-optimal performance with their HP 10811 series oscillators. James Miller G3RUH made a slight mention of optimizing performance by readjusting the set point temperature in one of his phase detector articles. He said though time consuming

[time-nuts] Schematics needed

Gents, I need the RF amp schematic and power supply schematic for my Austron 2100F Loran C receiver. Most needed it the RF amp boards. I really don't want to buy the CD for $35 as it's not cost effective. Please reply off list if you could help. Regards, Perrier __

[time-nuts] Possible HP 10811 instability clue Cont ’d.

List, Wrote https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] Subject: Neat TCXO

Gents, Ernie said >Have a look on ebay.280567398921. quite good TCXO. Great find! Thanks for sharing. If you didn’t know it, Motorola has been in the crystal manufacturing business for over 60 years. They usually just make them for their own products. Their reputation is excellent.

[time-nuts] TestEquipTrader

Gents, I tried to go to the TestEquipTrader site. All I got was DNS server response. Reading associated posts about a "Lother" and his dealings make me think one has better odds at being the next president of Iran that getting a square deal there. Regards, Perrier _

[time-nuts] 60KHz Antenna Cont'd

Gents, Wrote: < John's antenna should be in the archives. Just 100 feet of RG-58 wound on a 4 foot diagonal PVC pipe frame, with the shield split at 50 feet, IIRC. Tried resonating it, got unstable results. Could you please elaborate on the construction details such as co-ax used, indoors or

[time-nuts] TestEquipTrader Cont’d

Gents, Wrote: <1. TestEquipTrader is NOT a "site". It is a Yahoo Group, an email reflector, like febo. To access the files, etc. you have to join the Group: http://groups.yahoo.com/group/TestEquipTrader/join Thanks, now I know how to join it. Wrote< 2. Lothar has good stuff at good prices, bu

[time-nuts] Cesium standard prices

Gents, Time nut junkie that I am, I’d like to someday acquire a cesium standard. Several questions: price for a reasonably working unit. Any specific model that one should look for? What about the AS IS HP units that show up on epay? And if you get one how can you know or test it that it’s s

[time-nuts] Cesium standard prices

Gents, Talk about ask and ye shall receive! I want to thank all who have contributed answers on and off line. It appears at this time that in the case of a low end CS for me, that the remuneration is not worth the aggravation. I have far many too many projects to complete to be a nanny to wha

[time-nuts] Capacitor failures

Gents, Over the years I’ve purchased 15 or so pieces of HP 3XXX and HP 5XXX series of test equipment. All has worked well until a week ago my HP 3568B which had worked for years smoked when I turned it on. I had moved and had not powered it for a couple of years. Looking at the PS board I

[time-nuts] SWAP RFTG-II-XO for Trimble T-Bolt

Gents, Wrote > I have a working Lucent RFTG-II-XO that I don't need. Does anyone have an extra Trimble Thunderbolt they would swap for it? I would consider other GPSDO's. Now Dick we know are a fine and honorable fellow BUT there is about a $40 spread in your favor for what you want to swap f

[time-nuts] Time of death-Again

Gents, Wrote: < If you want a sub-microsecond time of death, sit on a bomb like Major T. J. "King" Kong in "Dr. Strangelove," and get your friends to time and triangulate the prompt radiation. That should be good to a few 10's of nanoseconds. Absolutely Not So! The H-Bombs are slowed by parac

[time-nuts] HP 5370B Output Help Needed

Distinguished Gents, As soon as I get my replacement GPS hockey puck antennas, and get my Lucent GPS receivers going I want to get into some serious testing and calibration of my rubidium and Xtal oscillators. I plan to run two GPS receivers independently into two 5370B TICs simultaneously for

[time-nuts] Changing WECO connectors to BNC

Gents, Wrote:< Yikes, WECO is hard to find. Anyone know a source for WECO 439A/440A connectors and adapters? Optimist that I am, I thought they would be easy to find. Coping with an HP 3336B. Wrote: https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] 10 MHz phase detector: 4046 or separate XOR (74HCT1G86)?

Achim, Don’t re-invent the wheel. Google James Miller 10 MHz GPS. Very similar ckts are by Talbot and Bozic. The basic idea is to divide the 10 MHz to 10 KHz and then use a phase detector. All will work well. It comes down to personal choice. If you’re into complexity the Brooks Shera solu

Re: [time-nuts] Randomly stumbled on this...

Gents, Wrote: I have this bridge for sale... Perusing the Symmetricom web site is appears that they have built something similar and are now offering a evaluation board. Price unknown. When the Sandia Lab design was featured several years ago IIRC in Popular Science magazine and the street pr

Re: [time-nuts] TI 74LV4046 phase detector.

Gents, Wrote: < The 74LV4046 from Texas Instruments is far superior to any of the earlier variants. Great Info! Thanks. And a wonderful bonus is that it is available in PDIP 16 pin from Mouser for $1.66 each. It seems like almost everything better these days is SMT. Regards, Perrier

[time-nuts] Frequency referenced temperature regulator

List, Looking for a stable temperature sensor I first went to YSI. They have sold their sensor products to. Measurement Specialties, Inc. Perusing their site I came upon a Ni1000 SOT temperature sensor. It is a nickel based unit that has a basic resistance of 1K ohms at 20 degrees C and ris

[time-nuts] Temperature sensors and bridge amps

List, My following comments are am exploratory thought process of which I don’t profess to know the answers. Perhaps in the future experiments will provide some. So here we start. The Ni1000 SOT temperature sensor is a nickel based unit that has a basic resistance of 1K ohms at 20 degrees C

[time-nuts] Compairing two GPSDOs Oscillators

List, wrote: > I'm looking for some advice about ways I can compare the frequency of two gpsdo's. > Any thoughts as to what could be obtained used for less than 1K that would be > suited for this type of measurement ? OK, Here’s what I use and why. For a GPS receiver: the Lucent RFTG-M-XO GPS

[time-nuts] How does one actually do Allan variation graphs?

List, Allan variation is good. Allan variation can reveal valuable information. But when it comes to do it I feel like Lou Costello in Who’s On First? I’ve been an electronics technician all my working life. Math beyond A squared plus B squared equals C squared is beyond my abilities. I have

[time-nuts] Precision Oscillator Parts FS

Fellow time-nutters, I have the following precision frequency parts for sale. Quantity (4) NOS 3.000.000 MHz Crystals. They are clear glass hermetically sealed in HC-6 holders and individually serial numbered. The were manufactured by Midland with a 51-67 production date. They were original

[time-nuts] GPS antenna info needed

My magnetic base hockey puck amplified GPS antenna for my Lucent receiver died. I had purchased it at the Dayton Hamvention so I don’t remember the dealer. I’ve found quite a few sellers on Amazon that are in the USA and their prices are all about the same. Does anyone have a recommendation?

[time-nuts] Data Professionals Press Release

List, Wrote: Data Professionals of Pleasanton California has purchased the Copyrights and existing inventory of all legacy Heathkit product documentation from Heath Company of Benton Harbor Michigan for an undisclosed amount. The new company will make copies of the original legacy manuals avail

[time-nuts] Isolated input oscilloscopes

Mark, Wrote: A little off topic, but needed for a time-nutty application: 4 channel scope with isolated inputs that is affordable. I have a 2 channel Tek THS730A. The Tek TPS2014 is rather pricey. Does anybody know of something affordable? If all you are looking for is isolation from ground, a

[time-nuts] DJVU and PDF

List, I’ve been trying to do a little desktop publishing on the side for 25 years and have learned a lot mostly by trial and lots of errors. I was first multiple sand-bagged by MS. Either going to a new operating system or changing to a newer version of word changed the format of completed do

[time-nuts] Editing, nitpicking, and graciousness

List, I, and I suspect many others, archive this list on a word processor to save its information for projects and learning. That said, there are a number on this list who do not edit their replies to a thread so we end up with pages upon pages of previous postings. If one or more people do

[time-nuts] Frequency counter recommendation - Basic

List,   The opinions given have been fascinating.  However I see this discussion going in two directions.  One is making a counter.  This is fine.  Go for it if you have all the resources and time it will require.  The Achilles heel that I see to this project is being able to duplicate the mat

[time-nuts] Favorite Watch?

GM List, Food For Thought. Not a criticism of any list member! Citizen CTQ57-0953 Chronomaster (calibre A660) Price: $2,699.00 Nice Watch: $100 PLUS Christmas Dinner at the Homeless Mission feeding 966 @ $2.69 each Totals $2,699.00 Decisions Decisions Decisions Merry Christmas

[time-nuts] Archiving Data

List, I apologize in advance for my long posting Several weeks ago I posted what were my attempts to save data and my school-of hard-knocks learning curve. Unfortunately several posters just had to nit-pick the process I had used and started a long series of posts and counter-posts about the

[time-nuts] Oscillator Packaging

List, Several members have mentioned that they have HP 10811 style oscillators. A very neat packaging solution with dividers and circuits is posted at: KH6GRT. Do a Google search. Regards, Perrier ___ time-nuts mailing list -- time-nuts

[time-nuts] Comparing 10 MHz Oscillators at 10 GHz- an alternative method?

List, While comparing oscillators at 10 GHz might work for some it is indeed a daunting challenge at the very least. I would like to propose what may be cheaper and more readily achieved method for Comparing 10 MHz Oscillators by more of us time-nuts. (This is still theoretical) What I propo

[time-nuts] HP 10811 performance and quality

List, Wrote: It was not cheap, it was not high performance, it was not elegant. But it did get product shipped on time. “In the land of the blind the one eyed man is king” Rick, All your statements are most likely 100 percent accurate. You are the expert. The problem for the rest of us is th

[time-nuts] HP 10811 Stability

List, Wrote:< I have no problems with my 10811. I just want to experiment with ways to improve performance, right now I have several that are in the E-13 YES! Regards, Perrier ___ time-nuts mailing list -- time-nuts@febo.com To unsubs

[time-nuts] 10 MHz Oscillator comparison part II

List, Wrote: However the exercise is probably pointless as the frequency difference between the 2 signals as seen at the output of the cascaded divide and mix chains are reduced by this scheme. Umm. I guess I didn’t express my thoughts effectively enough. The idea is to subtract 9 MHz in each

[time-nuts] Tbolt Temp Specs

List, The temperature numbers that members have published are very impressive. My question is: What does the tbolt use for a temperature sensor and is there or has anyone been able to independently verify that the stated numbers are accurate? Of course if they are working extremely well it may

[time-nuts] Mass vs BTU Function

List, Please help me with this physics question. If one has a given cube, say 2 x 2 x 2 inches. And one has the choice of aluminum, copper, or lead (just for an example). Will each store or hold the same amount of BTUs or does the density make a difference? IF the density makes a difference,

[time-nuts] Clock Calibration

List, I was reading some of the history of mechanical clocks and was astonished to see that one guaranteed its accuracy to 2 milliseconds per day! (And it was) Now this same clock when tested with modern equipment tested to be accurate to 200 micro-seconds per day. Astonishing! This got to wo

[time-nuts] External 10811 from HP 5070B

List, Wrote: So what’s in the 5370B would just be for 'does it work or not' when not running externally. There are at least three advantages for external operation. 1. The HP turkeys didn’t make EFC available on the HP 5370B which totally baffles me. 2. There are better lower nois

[time-nuts] Lightsquared and a little math

List, Wrote "The nationwide LightSquared network, consisting of approximately 40,000 cellular base stations, will cover 92 percent of the U.S. population by 2015 You can make book the missing 8 percent will be areas that exclude the farmers and ranchers who provide our food but the left will ma

[time-nuts] Measuring clock accuracy in the past

List, Just a short note of thanks for all who answered my questions both on and off list. I was overwhelmed with the graciousness and information that was shared. Regards, Perrier ___ time-nuts mailing list -- time-nuts@febo.com To unsub

[time-nuts] Subject: Re: Lightsquared and a little math

List, Wrote: https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

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