Re: [time-nuts] Source for DC-blocking 50-ohm terminators? (Spectracom 8140)

Julien Thanks for the link I downloaded the manual and it all makes sense now. Yes just lift the inductors to clear the DC. Its is actually for line powered amplifiers as someone mentioned. You would of thought there would be a power jumper per BNC. Good luck. Paul wb8tsl On Mon, Jun 4, 2018 at

Re: [time-nuts] Source for DC-blocking 50-ohm terminators? (Spectracom 8140)

Yes I would say you have to build it. The only reason make such a requirement is if the amplifier is not using a split power supply. But instead is a single supply with the output at 50% of the supply voltage. It could be very reasonable if what I suggest is true to open the amp and install the

Re: [time-nuts] TrueTime XL-AK Issues

and look closer later. If nothing else it becomes an Organ Donor. > > > The second unit is doing a sky survey now. I'll give it a few more > > hours to see what develops. > > > Thanks, Dick, W1KSZ > > > Sent from Outlook<http://aka.ms/weboutlook>

Re: [time-nuts] TrueTime XL-AK Issues

replying, > > > 73, Dick, W1KSZ > > > Sent from Outlook<http://aka.ms/weboutlook> > ____ > From: time-nuts <time-nuts-boun...@febo.com> on behalf of paul swed < > paulsw...@gmail.com> > Sent: Wednesday, May 23, 2018 12:5

Re: [time-nuts] TrueTime XL-AK Issues

Wow They actually came up. A site survey can take some 20 hours. There should be some LED indicator that says the status is locking. Let them run a day or two. If there is a LI battery to retain information that may be long gone. Replacing that would give you a fatser start. Had to do this on some

Re: [time-nuts] Cesium sold

Doug I sent seperate email on the R references early yesterday. Not sure you got those and I am intereseted. paulsw...@gmail.com Regards On Sat, May 19, 2018 at 11:32 PM, Doug Millar via time-nuts < time-nuts@febo.com> wrote: > Hi, Thanks for all the responses. The unit has been spoken and paid

Re: [time-nuts] Cesium Clock Avialable

if it works. Regards Paul On Sat, May 19, 2018 at 3:49 PM, paul swed <paulsw...@gmail.com> wrote: > Bob > I believe that the Cesium 133 as I recall actually isn't. > There was a document from HP. But its been a long time. > I will bet folks ship the 5061s all the time without a

Re: [time-nuts] Cesium Clock Avialable

) …. at > that point > all sorts of nasty legal sorts of things could happen. > > Just another of life’s little pieces of excitement …. > > Bob > > > On May 19, 2018, at 1:36 PM, paul swed <paulsw...@gmail.com> wrote: > > > > Bobs > > Comments a

Re: [time-nuts] Cesium Clock Avialable

Bobs Comments are on target. The Cesium can last a long time on the shelf. But (Always a but) other stuff in the tube tends to pollute the tube. This causes the high current when you start the system that may or may not clear up.Some great time-nuts threads on the subject and how to attempt to

[time-nuts] Resistance components interested.

Apologies to everyone as this part of Doug's offer isn't time nuts. Doug I am interested in the R's Please contact me directly paulsw...@gmail.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Commercially available empty ovens for oscillator testing?

Julien Yes you could stabilize the temperature at some level. But your really adding complexity that will tend to interact. You have the natural TCXO behavior and then the oven behavior. Hard to say how it all will behave. But I suspect your suggesting warming the TCXO to something in its best

Re: [time-nuts] Austron 2100 LORAN C manual I have a pdf!

s, > John > AJ6BC > > > On Thu, Jul 30, 2015 at 9:46 AM, paul swed <paulsw...@gmail.com> wrote: > > > In looking at the threads and putting away the Austron catalog I > realized I > > have a 2100 pdf with schematics. > > Its 8.9 MB so will

Re: [time-nuts] WWVB information

Hal when I was building de-psk-ers and such I have to say I did not see the imbalance. It looked pretty solid in timing. The fact that at each minute for the first number of seconds the phase is actually fixed just before the preamble is useful. It clears out any possible buildup if it existed.

Re: [time-nuts] Weird Stuff Warehouse shutting down

99435485!3d37. > 551234775823595!3m2!1i636!2i386!4f13.1 > > > > 73 > > > > KJ6UHN > > > > Alex > > > > > > On 4/7/2018 4:03 PM, paul swed wrote: > >> > >> Like most of you I also visited these places and have dragged back and >

Re: [time-nuts] Weird Stuff WareHouse shutting down

Thanks It has to have been Apex that I visited. The back areas were a mix of open sky and sort of sheds. The air was typically pretty dry so the stuff held up well. There were things I would have liked to have grabbed. Could easily see a day digging around. Inside its stacked to the 20 ft ceilings

Re: [time-nuts] Weird Stuff Warehouse shutting down

Like most of you I also visited these places and have dragged back and shipped lots of "Weird stuff". Even smaller parts through airport security. The oddest thing was 3/4" cable TV hardline connectors and there was no issue at all. It always made it fun to go on a business trip to the area and

Re: [time-nuts] new longwave time service planned in India

Pieter That is quite a surprise that a country is setting up a long wave system these days. They still have to raise the money but it seems like a semi-private arrangement. Even more interesting is they suggest 3 locations. Something to try to find in the VLF bands some day in the future. Regards

Re: [time-nuts] TV Signals as a frequency reference

Hello to the group. Been staying clear of the thread as many good comments. Several things happened that made the color burst signal useless for most people. Yes the networks had Cesium's about 3 of them at CBS and the network feed carried that quality. but about 1980 a device called a frame

Re: [time-nuts] Introduction, new list member, Ms Tisha Hayes, AA4HA

Tisha Welcome to the group. The 3586s are very nice I have more then a few. That said get the nicad battery out of the system ASAP. The charging circuit is very poor and overcharges them. (Pretty odd for HP) When they leak they destroy the power supply regulator board. It is a mess to clean up and

Re: [time-nuts] WWV/CHU

I'll add to the conversation. CHU is easier to deal with because its not a subcarrier as the 100 Hz WWV signal is. Its FSK and bell 103 modem style. Regards Paul WB8TSL On Thu, Mar 29, 2018 at 10:08 AM, jimlux wrote: > On 3/29/18 3:49 AM, Attila Kinali wrote: > >> On Thu,

Re: [time-nuts] Leitch CSD-5300N

Bill, Well that is good news. Looks like you found your way into the clock setup. Regards Paul WB8TSL On Fri, Mar 23, 2018 at 10:00 AM, Bill Baker via time-nuts < time-nuts@febo.com> wrote: > > Great news for owners of the wonderful old Leitch CSD-5300N master > clocks. Many stations and

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

Martin NIST did preserve the AM data so that the cheapy clocks typically worked. But phase tracking receivers don't. Regards Paul WB8TSL On Fri, Mar 23, 2018 at 5:35 AM, Martin Burnicki < martin.burni...@burnicki.net> wrote: > paul swed write: > > I'll add to the comments

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

I'll add to the comments the spectracoms are phase tracking receivers and do not work on the new BPSK signal. As mentioned over the years I and others have offered approaches to correcting the carrier. My last approach that worked very well over great distances was the cheatin d-psk-er. Works

Re: [time-nuts] There goes LORSTA Jan Mayen

Poul Good pictures and sad to see. Even the pictures of the area beyond the LORAN system really are nice. Hey they may have a few Cs for you. Regards Paul WB8TSL On Tue, Mar 20, 2018 at 4:37 AM, Poul-Henning Kamp wrote: >

Re: [time-nuts] Quieting the HP-113AR Clock/Frequency Divider

Jeremy I have heard about the old movements in time-nuts. Kind of a reason to stay clear of them for me at least. Thought they are amazing pieces of equipment, I have 4 clocks on the wall that have impulse motors. Though not loud you certainly can here the steps every second. Sounds like you have

Re: [time-nuts] TymServe TS2100 dead power supply

I have built an irig b encoder. Irig uses a 1 KHZ amplitude modulated signal. I can't remember now if it was pulse width modulation also. But it used a small processor and todays arduino is many time more effective at the job. That said I used a modulator using a small xtal controlled divider to

Re: [time-nuts] Z3801A OCXO manual trimming

Someone mentioned the right non-lazy approach with a summing/offset opamp. Do agree. But then just for a try use a V supply and a 10K. I seem to recall tracing the DAC to an opamp. The EFC line is pretty easily accessed. Its one of the little coax cables. The other even lower risk approach is

Re: [time-nuts] TymServe TS2100 dead power supply

Bob Classic sign of bad electrolytics. Several comments. I have had equipment with small switchers that were separate form the mother board. Often an actual supply could be found cheap. When I can't its time to check the caps. Really cheap to replace. Regards Paul WB8TSL On Mon, Mar 5, 2018 at

Re: [time-nuts] Z3801A OCXO manual trimming

Crazy thought.Could you just force a DC offset into the EFC assuming the internal varicap is not out of range. It would be simply adding a resistor to pull up or down to see if you can get a bit of pull and allow the dac to move back in range a bit. Its a band aid. I know its sort of crazy. But

Re: [time-nuts] Z3801A OCXO manual trimming

I dug in deep and there is an adjustment. Thats the great news. The bad news was never able to put the oven back together. It was a mess. The insulation stuff deteriorated. (Might mean over heated oven) The various wires going to the oscillator are wrapped about 4 times around the oven. I am sure

Re: [time-nuts] WWV or Net Clock controlled oscillator

Donald I don't know if anyone makes such a thing. But I can easily think of numbers of answers. It depends on what the Mass Rowe will allow and how comfortable you are with a soldering iron. I will guess you need to dig in and supply a better reference. I searched the web for mass rowe and it

Re: [time-nuts] FRK

r time 20 units have passed through my hands > Bert > > > Sent from my Galaxy Tab® A > Original message From: paul swed <paulsw...@gmail.com> > Date: 2/27/18 1:45 PM (GMT-05:00) To: Discussion of precise time and > frequency measurement <time-nuts@

Re: [time-nuts] FRK

Bert what I assume is the FRK lamp. it has a few wires and then 2 pins out of the side. Unless those are for mounting the lamp. Regards Paul WB8TSL On Tue, Feb 27, 2018 at 11:21 AM, Attila Kinali wrote: > On Tue, 27 Feb 2018 09:01:31 -0500 > Bob kb8tq wrote: >

Re: [time-nuts] FRK

Thanks for the pictures. Curious on the rb lamp. There seem to be 2 pins from the side. Is that a lamp start igniter? Regards Paul WB8TSL On Tue, Feb 27, 2018 at 9:01 AM, Bob kb8tq wrote: > Hi > > Judging from the date codes on some of the parts, I’d guess that > your FRL-L is

Re: [time-nuts] Replacement A9 boards for the HP 5065A

Well all this capacitor talk has me actually looking for the 5 uf cap. When I picked up the 5065a it didn't work. This was in the late 90s and no manual was available at that time. I reverse engineered the system and guess what cap was bad? The integrator. So not being all that smart, I hooked 2 X

Re: [time-nuts] read of the wire - the Clock of the Long Now

Pete, Any updates from your doctor? Regards Paul On Thu, Feb 22, 2018 at 9:18 AM, Pete Lancashire wrote: > https://www.theengineer.co.uk/1-year-clock-texan-mountain/ > ___ > time-nuts mailing list -- time-nuts@febo.com >

Re: [time-nuts] LED instead of discharge lamp for Rb vapor cell standards

Attila I haven't tried that and I suspect the lines are important because that establishes the reference. Now I would also suggest that an experiment like you suggest be tried on a FRS-XXX cheapy Rb. Easily dis-assembled and can be re-assembled back with the lamp. No harm. Paul WB8TSL On Wed, Feb

Re: [time-nuts] The "NAKED" 5065A optical unit

Corby no intent to rework the bulb. Its just I have had good success with bulbs from the FE- series when they fail to operate by heating the bulb to re-vaporize the "Stuff" that plates out. Wasn't sure if this would be an approach on the 5065 when that day comes for mine. Regards Paul WB8TSL

Re: [time-nuts] The "NAKED" 5065A optical unit

on older small FE RB's. Thank you. Paul WB8TSL On Tue, Feb 20, 2018 at 11:32 AM, paul swed <paulsw...@gmail.com> wrote: > Its RF and mag loop. > > On Tue, Feb 20, 2018 at 8:49 AM, Dana Whitlow <k8yumdoo...@gmail.com> > wrote: > >> I'm curious: >> >> Is th

Re: [time-nuts] The "NAKED" 5065A optical unit

Its RF and mag loop. On Tue, Feb 20, 2018 at 8:49 AM, Dana Whitlow wrote: > I'm curious: > > Is the lamp RF-excited, or by DC going to internal electrodes? > > And if by RF, is the energy coupled in magnetically by a loop, > or by capacitive electrodes? > > Thanks, > >

Re: [time-nuts] Looking for some Frequency Electronics info....

Walter pure speculation. Maybe the 100 MHz is superposed to be locked to the 10 MHz. With a scope see what the drift rates are between the two. Adjust EFC slowly to get the 100 MHz to go below the 10 MHZ if its running fast. See if the light changes to green. If it does you know that the system is

Re: [time-nuts] The "NAKED" 5065A optical unit

Should have carefully read Corby's comment. Lamps left. On Tue, Feb 20, 2018 at 9:40 AM, paul swed <paulsw...@gmail.com> wrote: > Wow on the right, is that the lamp? > Thats one large lamp to light. I am use to the little capsules about the > size of a pr-1 light bulb. > This i

Re: [time-nuts] The "NAKED" 5065A optical unit

Wow on the right, is that the lamp? Thats one large lamp to light. I am use to the little capsules about the size of a pr-1 light bulb. This is a keeper picture. Regards Paul WB8TSL On Tue, Feb 20, 2018 at 8:24 AM, Bob kb8tq wrote: > Hi > > Indeed very cool pictures. > > If the

Re: [time-nuts] Does a frequency counter locked to GPS need to "warm up"?

Exactly what I have run into. Some systems lock an internal reference to to the incoming system. So that oven has to come up to temp. Then the trigger and interpolators need to warm up and stabilize. So the really right answer is what accuracy are you looking for? Because what I mention above may

Re: [time-nuts] Receiving the MSF time signal on cheap radio modules

Deirdre, Great discussion on my favorite topic. I am the guy on the other side of the lake that curses MSFs interference with WWVB. I did indeed cheat by using the GPS time and 1 second tick to recreate the WWVB timecode bits to remove the psk shifts in the received signal here on the east coast.

Re: [time-nuts] Heathkit GC 1000 Most Accurate Question

Exactly they are the small open air pots. Just one possibility along with the other good suggestions mentioned. Regards Paul WB8TSL On Tue, Feb 6, 2018 at 7:29 AM, Dave B via time-nuts wrote: > > > Bill > > I see the manual is online for the GC1000. > > The 1KHZ tone decoder

Re: [time-nuts] Heathkit GC 1000 Most Accurate Question

I just realized there is also a 100 Hz decoder also u402. Both use the typical open air 1 turn pots. They get cranky with age. Regards Paul. On Mon, Feb 5, 2018 at 2:48 PM, Brooke Clarke wrote: > Hi: Bill > > Mine needed pretty much all the electrolytic caps replaced. >

Re: [time-nuts] Heathkit GC 1000 Most Accurate Question

Bill I see the manual is online for the GC1000. The 1KHZ tone decoder may be suspect in that its drifted off frequency. Its a little ne-567 chip with a pot. ne 567s were never all that great... Regards Paul On Mon, Feb 5, 2018 at 12:39 PM, Dave Daniel wrote: > Hi, Bill. > > I

Re: [time-nuts] PBS, Tue evening, The Secret of Tuxedo Park

Hello to the group. I did read the book several years ago. Its quite good and I had no idea about any of this. Sort of amazing. So the fact that PBS is doing a show on this is going to be good to watch tonight. Thank you for sharing. Regards Paul WB8TSL On Tue, Jan 16, 2018 at 1:08 PM, Azelio

Re: [time-nuts] Stable32 now available

Hello to the group. The Stable32 book arrived yesterday from Lulu and its as expected. Good quality at a reasonable cost. It also arrived far faster then the web site would have you believe. Regards Paul WB8TSL On Fri, Jan 5, 2018 at 10:13 AM, Dr. David Kirkby < drkir...@kirkbymicrowave.co.uk>

Re: [time-nuts] Identify RFTGM-II-XO Part

Pat Here is my thought. Everything may be just fine actually. This looks like the same approach used on older technology even the transistor. Its job is to run class AB1 and boost the signal to something like +27 dbm. Lots of power. The reason is these then typically drive a passive 8 or 16 way

Re: [time-nuts] Reference input on HP counters

Jerry It depends on the unit and age. There are not rules of thumb from my experiance. Some of the approaches in HP as an example Have switches and demand a specific frequency and level. Some lock an internal reference to any multiple of a reference freq like 5 or 10 MHz. Some are direct some are

Re: [time-nuts] Anyone have a working HP-113AR/BR Clock?

Jeremy I will speculate the noise simply was tolerated. At the time these would have been a pretty big to do. It was top line HP after all. Most likely other fans in the divider chains, receivers, scopes competed for attention. But that was a bit before my time. Regards Paul WB8TSL On Fri, Jan 5,

Re: [time-nuts] HP 105B: Modern replacement for NiCad battery pack?

Ulf A drop in replacement for nicads is nickle metal hydride or NiMh. Nicads are still available but can be expensive. The other comment I would make is the 1970s charging circuits were pretty crude and lead to boiled batteries. If your going to invest in an internal battery you may want to

Re: [time-nuts] HP5065A AC-Amplifier (A7) Improved (?) version...

Do not seem to find it on the the KO4BB site at least yet. Regards Paul WB8TSL On Tue, Jan 2, 2018 at 11:56 AM, Ulf Kylenfall via time-nuts < time-nuts@febo.com> wrote: > Gentlemen, > I have assembled (what I hope is) an improved version of theA7 AC > Amplifier of the HP5065A. It has been

Re: [time-nuts] Stable32 now available

for a real book. Regards Paul WB8TSL On Tue, Jan 2, 2018 at 9:38 AM, Dr. David Kirkby < drkir...@kirkbymicrowave.co.uk> wrote: > On 2 January 2018 at 14:10, paul swed <paulsw...@gmail.com> wrote: > > > Jelen > > Thank you for informing us about Stable32. I have bee

Re: [time-nuts] Stable32 now available

Jelen Thank you for informing us about Stable32. I have been busy downloading details. I was surprised by the size of the use manual at some 348 pages. I believe I have a very long way to. I suspect we need a Stable32 for dummies book. Regards Paul WB8TSL On Tue, Jan 2, 2018 at 9:02 AM, Bob kb8tq

Re: [time-nuts] question about HP 5601a harmonic generator

Kejia Rick gave you some very good information. I have to agree that the SRDs are pretty tough from my experience. I have several 5061s. But they do need the bias and the RF at the level indicated in the manual. Not to much not to little. There is also a RF attenuator knob on the multiplier. So

Re: [time-nuts] Oscilloquartz 8600-3 Disassembly pictures...

As comment mmdd is actually a windows behavior. If files are named in that manner they line up in the directory in order. 20171216 8603 pix 1-20. Minor but may be helpful. Regards Paul WB8TSL On Sun, Dec 17, 2017 at 8:55 AM, Attila Kinali wrote: > On Sat, 16 Dec 2017

Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

Must have missed something here. Basic? Arduino uses C behaviors. God knows everythings been written for it so maybe there is a basic language. That said schematics are readily available and I believe its all open source. Thats why its been so popular. Lots of nice simple tools for it also.

Re: [time-nuts] Simple open source microcontroller solution to tune DDS needed

bob I also had trouble and assumed it was the AD9835. That said I was curious. The DDS boards are always on ebay with mounted chips and clock for $10. Yes sir they are plenty to choose from still. I go along with Jerry's comment on the arduino. Plent of code snips for control and DDS chips.

Re: [time-nuts] Oscilloquartz 8600-3 End of range...

Ulf when I went to the photobucket site yesterday it did the same. Not a good place to share any longer. I had wanted to see the pictures. Regards Paul WB8TSL On Wed, Dec 13, 2017 at 12:19 PM, Ulf Kylenfall via time-nuts < time-nuts@febo.com> wrote: > > Ed, > I am inclined to beleive you. > I

Re: [time-nuts] End of Range Oscilloquartz 8600-3

As much as the pictures are interesting the sites blasting out crazy amounts of ads Totally a problem. Touch anyone of them and off you go to whatever it was. Regards Paul WB8TSL On Tue, Dec 12, 2017 at 12:32 PM, Ed Palmer wrote: > It sounds like yours is different from

Re: [time-nuts] End of Range Oscilloquartz 8600-3

Ulf Consider taking pictures of the process. That would be a great document for users that need help. Someone will post them on there web page. I have done this for things I have built and shared. Then we can see what you are running into. As you have seen you have a huge range of expertise. Can't

Re: [time-nuts] General Radio Model 723D Precision Oscillator (Tuning Fork)

to the tuning fork. Regards Paul WB8TSL On Sat, Dec 9, 2017 at 11:37 AM, paul swed <paulsw...@gmail.com> wrote: > Well we are kicking butt on 723 oscillators. I have the 1000 hz model and > found it at the MIT flea about June. > Bad rectifier section. Cap was good though I car

Re: [time-nuts] General Radio Model 723D Precision Oscillator (Tuning Fork)

Well we are kicking butt on 723 oscillators. I have the 1000 hz model and found it at the MIT flea about June. Bad rectifier section. Cap was good though I carefully reformed it. Have to say what attracted me was the case and then the realization of what it was. It works very well so now I can

Re: [time-nuts] End-of-Range: Oscilloquartz OCXO 8600-3

ds like you have the same > problem. > > Jeremy > > > On Fri, Dec 8, 2017 at 7:52 AM paul swed <paulsw...@gmail.com> wrote: > > > I took a quick look at the spec sheet. > > It appears coarse adjustment is an option M and would actually be a pot. > >

Re: [time-nuts] End-of-Range: Oscilloquartz OCXO 8600-3

roblem. I have been advised > to take it apart and replace one of the capacitors in order to bring the > frequency back into the range of adjustment. Sounds like you have the same > problem. > > Jeremy > > > On Fri, Dec 8, 2017 at 7:52 AM paul swed <paulsw...@gmail.c

Re: [time-nuts] End-of-Range: Oscilloquartz OCXO 8600-3

I took a quick look at the spec sheet. It appears coarse adjustment is an option M and would actually be a pot. That speaks to another tuning diode for coarse? Or a pot on pot arrangement. That sounds ugly. Regards Paul WB8TSL On Fri, Dec 8, 2017 at 10:17 AM, Bob kb8tq wrote: >

Re: [time-nuts] Test WWV timecube against Cesium, Rubidium, MASER or other precision time (UT-1) metrology

Pat Way back in the 90s I measured the color subcarrier frequency of geostationary satellites. That aren't actually stationary. I knew the quality of the subcarriers for a number of the networks since we originated the signals. CBS was Cs others were Rb and still others various Xtals. I had direct

Re: [time-nuts] Rubidium freq standard - temperature

With some humor as I looked inside my egg I had replaced the caps also. So it is a common failure. Also note the chip is not a micro but an array or at least a state machine. Regards Paul WB8TSL On Thu, Nov 30, 2017 at 8:47 PM, paul swed <paulsw...@gmail.com> wrote: > Will forward tomo

Re: [time-nuts] Rubidium freq standard - temperature

hello to the group OK turns out my egg units are actually the same ts-frs sn1599. Nice lable thats says what the pin functions are. 1 rf rtn 2 rf 3 rf rtn 4 +24 1.5A cold says my note 5 +24 rtn 6 +24 power same as 4 7 sig rtn 8 reg mon 9 sig rtn 10 lock 11 sig rtn 12 dc light 13 sig rtn 14 xtal

Re: [time-nuts] Rubidium freq standard - temperature

s package. Looks like it was all assembled by hand, then taped-up, > sealed twice and clamped. > > Thanks. > > Jerry > > > On Nov 30, 2017, at 5:24 PM, paul swed <paulsw...@gmail.com> wrote: > > > > Jerry > > I have some dribs and drabs of details on

Re: [time-nuts] Rubidium freq standard - temperature

the Tight PLL test sets to solve #2. Gilbert > suggested we look to see if we could tap into the field current somehow to > set the frequency more accurately. > > > > On Nov 30, 2017, at 3:44 PM, paul swed <paulsw...@gmail.com> wrote: > > > > Jerry > > Y

Re: [time-nuts] Rubidium freq standard - temperature

Jerry You have some EG RBs. Thats great news. Now I am not alone. I have 2 also that work. I have found little details on them. That said I believe they are intended to be mounted on a heat sink. One end surely looks like that whats would be done. I believe mine are LCR-10-T. Might have to double

Re: [time-nuts] Fast rise time pulser

It did make it to the post. Question. Rise and fall times are sub 40ps is that a typo in your email. Regards Paul WB8TSL On Mon, Oct 16, 2017 at 10:45 AM, BIll Ezell wrote: > I rushed out and ordered one, and I have to say, I'm impressed. > The test report it came with states

Re: [time-nuts] Fast Rise/Fall Time Pulser

I looked at the picture and I can see now that the sma is the pulse and the BNC is the output trigger. Pretty interesting for the cost. I then did a search on google for fast pulse generation and a analog devices solution came up that delivers 50ps and actually shorter. I doubt its one and the

Re: [time-nuts] Z3801A and Z38XX Issues

Its 7O1 thats how mine has always worked. Regards Paul WB8TSL On Mon, Sep 11, 2017 at 1:05 AM, Richard Solomon wrote: > Not according to the manual, but then that could be my problem !! > > > 73, Dick, W1KSZ > > > Sent from Outlook >

Re: [time-nuts] Restoration of a 5065A - Continued (Ulf Kylenfall)

Totally agree with Scott. On the lamp thats good it lights. If you search older threads on Time-nuts you will see that on the FRS rubidiums you can heat the lamp with a heat gun and re-migrate the RB off of the glass. It makes them re-usable and extends the life very nicely. I do not suggest doing

Re: [time-nuts] Restoration of 5065A - continued...

So curious did that get the unit running?? Regards Paul WB8TSL On Mon, Sep 11, 2017 at 2:22 PM, Ulf Kylenfall via time-nuts < time-nuts@febo.com> wrote: > > When I mentioned redesign, it was the intention to copy the by HP updated > designinto a new Cad project (I use Cadence PCB Editor for

Re: [time-nuts] Z3801A and Z38XX Issues

I seem to remember its 19200, 7,O,1. Regards Paul WB8TSL On Sun, Sep 10, 2017 at 11:01 PM, Mark Sims wrote: > And remember that commands sent to the Z3801A end in Line Feed, not > Carriage Return. > ___ > time-nuts mailing list --

Re: [time-nuts] Resoration of 5065A - continued...

I would simply slap a 741 into position to see how it behaves. Also check those zeners for +/- 14.7V. They go bad. Regards Paul WB8TSL On Mon, Sep 11, 2017 at 5:56 AM, Ulf Kylenfall via time-nuts < time-nuts@febo.com> wrote: > > Continuing my efforts to fix the 5065A... > > There was something

Re: [time-nuts] GPS Arctic graphs

Leo I had no idea that you had done this work. Pretty interesting. Amazing amount of weight and the fact that it ran for some 134 days. Thanks for sharing. Paul WB8TSL On Sun, Aug 27, 2017 at 3:18 PM, Leo Bodnar wrote: > Perhaps, completely unrelated and useless information

Re: [time-nuts] Eclipse

Bill Interesting on the water fall. To reverse the offsets. Take the difference of the frequency from the supposed center frequency. Then add it to to the supposed center frequency. Flip this process if I have it backwards. Regards Paul WB8TSL On Fri, Aug 25, 2017 at 8:02 PM,

Re: [time-nuts] (no subject)

It hasn't been discussed before that I can recall. But its a cold RB clock and though it stable its still a secondary reference. Bob your right its interesting that the sales locations are in China and India. Perhaps a larger opportunity for a RB reference today. Regards Paul WB8TSL On Sat, Aug

Re: [time-nuts] How well does GPS work in the Arcitic?

I have been watching the thread and there is no reason for GPS not to work at the poles. Granted there can be solar events that upset it with things like severe multi-path but in general if the skies not glowing its most likely just fine. Also I believe the sats are somewhat low in the sky. Skips

Re: [time-nuts] Sharing a GPS Antenna

Clay Antennas can be shared through splitters. I have an 8 port satellite TV splitter. Auto sense DC and DC blocking. Inexpensive and on ebay and amazon. Interestingly 8 ports is never enough when your a time-nut. So you can do the same simply come off of one of your new ports from the splitter. I

Re: [time-nuts] Ships fooled in GPS spoofing attack suggest Russian cyberweapon

Sextent, compass, and clock. Amazingly as posted on time nuts some time ago the Navy and Coast Guard have re-introduced that training. On Mon, Aug 14, 2017 at 1:24 PM, Magnus Danielson < mag...@rubidium.dyndns.org> wrote: > Hi Jim, > > On 08/14/2017 06:03 PM, jimlux wrote: > >> And GPS users who

Re: [time-nuts] 15 v power supplies

Chuck I looked them up out of curiosity. For time nuts these are linear supplies. Not switchers. As Chuck says quieter. A note. Since these are linear you need to set the straps for 120V par or 220Vac ser. Regards Paul WB8TSL On Sat, Aug 12, 2017 at 1:25 PM, Chuck / Judy Burch

Re: [time-nuts] TBolt and the Local News

I would simply say forget all the easy discussions. Find the place the units are being dumped. I fear straight in the trash. It would be nice to have a spare TBolt for cheap. Regards Paul WB8TSL On Thu, Aug 10, 2017 at 8:13 PM, Mark Sims wrote: > Lady Heather has pretty much

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

Just remember you are taking on E911 responsibility. Not that brave. But come on all those tbolts going in the trash. Sounds like goodies. Regards Regards Paul WB8TSL On Thu, Aug 10, 2017 at 7:55 PM, Adrian Godwin wrote: > While it wouldn't be difficult to build such a

Re: [time-nuts] TBolt and the Local News

Sweet. Yankee ingenuity at its best. $27K thats seriously nice. Almost enough to get me to code something. But then its 911 services maybe not. Regards Paul WB8TSL On Thu, Aug 10, 2017 at 7:00 PM, Bob kb8tq wrote: > Hi > > They said that hardware was swapped out. > > Bob > > > On

Re: [time-nuts] interesting HP divider and clock on ebay

Thanks Tom I am familiar with the unit and this looks really nice. But won't be in my rack. Regards Paul WB8TSL On Wed, Aug 9, 2017 at 8:32 PM, Tom Van Baak wrote: > > Boy I have to say the front looks great. Good pixs to look at. > > Price not exciting at all. But maybe

Re: [time-nuts] interesting HP divider and clock on ebay

Boy I have to say the front looks great. Good pixs to look at. Price not exciting at all. But maybe someone has a spare kilo-buck. Regards Paul WB8TSL On Wed, Aug 9, 2017 at 2:41 PM, walter shawlee 2 wrote: > Has nothing to do with us, but there's a very clean, minty

Re: [time-nuts] And another Thunderbolt question

Vlad I do not have all of the answers but the TBolt gps weeks rolled over recently that is why the date is 1997 1024 weeks ago. LH is smart enough to correct for the rollover and display correctly as many have mentioned on time nuts. But the TBolt will not ever on its own be correct. For frequency

Re: [time-nuts] Loran

Paul Yes indeed lots of thinking. Thinking is good when you are paid by the hour. Unfortunately it doesn't create an alternate time and frequency reference should GNNS fail. I have been following this for a long time and hope that eLoran returns. I always enjoyed it as a reference here in Boston.

Re: [time-nuts] Thunderbolt question

The .5 on the f connector is an issue and thats through the filter on top of the board made of traces and 3 caps. From Arthur's digging I would agree he found the chip or one that would work. But that chips voltages seem to match so most likely not the issue. What does the F connector measure to

Re: [time-nuts] Thunderbolt question

Arthur Thanks for the picture. I have a TBolt also and its working just fine at the moment. But one day it may not. As several people have mentioned lightnings an issue. So going down the crazy thought path for a moment. It appears from your pix you can figure out what the GPS receiver chip set

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

Thanks I thought it would still work as the 3801 does. On Thu, Jul 27, 2017 at 10:03 PM, Tom Van Baak wrote: > > There is: There is a 13bit week number in message type 10. > > Attila, > > Well, yes and no. > > Yes -- paragraph 30.3.3.1.1.1 in www.gps.gov/technical/icwg/IS-

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

Well quite an unpleasant surprise. So after the 30th do the TBolts stop working or is it a case of just the wrong date? I know my Hp3801s been working just fine and its old. Is the TBolt the same issue. Wrong date but still locks thats all I care about actually. With to respect of some sort of a

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