Re: [time-nuts] ULN regulator with more current capability than LT3042?

- Original Message - From: "John Ackermann N8UR" To: "Discussion of precise time and frequency measurement" Sent: Sunday, March 18, 2018 4:13 PM Subject: [time-nuts] ULN regulator with more current capability than LT3042? Reviving the

Re: [time-nuts] Outdoor GPS Antenna Selection

Good quality RG6 has less loss and the mismatch is small. You see a lot of GPS receivers and antennas with F connectors even though they generally are 50 ohms. 26 dB of gain should work fine for 20 feet of RG6. Probably also good for good RG58. - Original Message - From: "Duane

Re: [time-nuts] TruePosition on the Arduino

t address. I'm curious about the real problem. Regards, Ignacio, EB4APL El 26/06/2017 a las 2:29, Tom Miller escribió: This is an update to discussions off list with Ben and Chris regarding using the two line, 16 character display with the Packrats software on the Arduino to control the TruePosit

Re: [time-nuts] TruePosition on the Arduino

This is an update to discussions off list with Ben and Chris regarding using the two line, 16 character display with the Packrats software on the Arduino to control the TruePosition GPS board. First, the ebay seller still has a few boards left and seems to take offers of $40 for them.

Re: [time-nuts] TruePosition on the Arduino

Has anyone been able to get the Packrat software to work with a display? I have been successful getting the Arduino board to initialize the Trueposition board but can't get the display right. The problem seems to be getting the I2C addressing correct. There are several 16x2 line displays

Re: [time-nuts] TruePosition GPS Receiver firmware

Maybe I have a problem unit but I measured the supply to the antenna at 3.7 volts. I have a 5 volt antenna and it still receives sats at the lower voltage. Anyone else check this supply? I wonder if it is a settable parameter? Regards, Tom - Original Message - From:

Re: [time-nuts] TruePosition GPS Receiver firmware

Has anyone figured out what the two small push buttons do? - Original Message - From: "Ben Hall" To: Sent: Monday, May 08, 2017 7:30 PM Subject: Re: [time-nuts] TruePosition GPS Receiver firmware On 5/8/2017 4:45 PM, Mark Sims wrote: Anyway,

Re: [time-nuts] TruePosition GPS Receiver firmware

- Original Message - From: "Mark Sims" To: Sent: Sunday, May 07, 2017 3:03 AM Subject: [time-nuts] TruePosition GPS Receiver firmware One of my TruePosition GPSDOs fried a chip in the power supply when the wall wart that was powering it

Re: [time-nuts] Austron/ Systrom Donner 8181 Time Code Reader

If you know what the zener is and what the unregulated supply voltage is, you should be able to calculate the resistance and power. Regards - Original Message - From: "Dave Wood" To: "Discussion of precise time and frequency measurement" Sent:

Re: [time-nuts] HP-59309A Clock counts only seconds

Also, you might install a high quality machined pin socket. Save the non-replaceable PC board. - Original Message - From: "David C. Partridge" To: "'Discussion of precise time and frequency measurement'" Sent: Monday, April 03,

Re: [time-nuts] HP-59309A Clock counts only seconds

4000 series logic is just fine. Just replace the original parts with like. http://www.ebay.com/itm/CD4011CN-CMOS-Quad-2-Input-NAND-Gate-5-pcs-/272579598216?hash=item3f77029788:m:mSmV7o8qfGTPl04DaSu3DSw Regards - Original Message - From: "Jeremy Nichols" To:

Re: [time-nuts] Thunderbolt Harmonics

- Original Message - From: "jimlux" To: Sent: Friday, January 20, 2017 8:34 AM Subject: Re: [time-nuts] Thunderbolt Harmonics On 1/19/17 8:48 PM, Rhys D wrote: Thanks for the detailed post Bill, I'm learning a lot here! So the spectrum

Re: [time-nuts] Low CostTemperature sensor

I agree with both of you. I can't imagine using the reverse leakage of a diode to measure temperature without some difficult and expensive design. Also, the transistor is using the forward biased B-E diode against what he stated in the article. And sloppy would be the best description.

Re: [time-nuts] Low CostTemperature sensor

That article has a major error. Anyone know what it is? - Original Message - From: "Jason Ball" To: "Discussion of precise time and frequency measurement" Cc: "Perry Sandeen" Sent: Tuesday, January 17, 2017 1:11 AM Subject:

Re: [time-nuts] Anyone (ideally in the UK) got a spare rotary knob for the 5370B TI counter?

- Original Message - From: "Dr. David Kirkby (Kirkby Microwave Ltd)" To: "Discussion of precise time and frequency measurement" Sent: Saturday, December 31, 2016 11:01 AM Subject: Re: [time-nuts] Anyone (ideally in the UK) got a

Re: [time-nuts] quartz drift rates, linear or log

Just out of curiosity, what is the age of each of these Tbolts? (i.e. date codes?) Thanks - Original Message - From: "Tom Van Baak" To: "Discussion of precise time and frequency measurement" Sent: Saturday, November 12, 2016 4:54 PM

Re: [time-nuts] I love the smell of tantalum in the morning

I usually nibble away at the center of the part until it is two separate pieces. Then unsolder each piece. Clean the pads off with wick then install the new part. Use a good sharp pair of flush cut side cutters. Tom - Original Message - From: "Bob Camp" To: "Tom Van

Re: [time-nuts] Opening an Isotemp OCXO

Sent: Friday, October 28, 2016 3:28 PM Subject: Re: [time-nuts] Opening an Isotemp OCXO That seems the most reasonable thing to do. Pete On 10/28/2016 3:20 PM, Tom Miller wrote: It looks like that is the only device that could be damaged by 12 volts. Can you find a replacement and try runni

Re: [time-nuts] Opening an Isotemp OCXO

It looks like that is the only device that could be damaged by 12 volts. Can you find a replacement and try running at 5 volts? - Original Message - From: "Peter Reilley" To: "Discussion of precise time and frequency measurement" Sent:

Re: [time-nuts] Opening an Isotemp OCXO

When I have an unknown OCXO, I put a scope on the output and connect a bench power supply to the DC inputs. I bring up the voltage until the RF out hits a stable level. That is where the internal regulator starts regulating. Then set it to the nearest normal power supply voltage, +5, +12, +15,

Re: [time-nuts] COTS cesium standard physics package life

Hi John, I have a Datum FTS-5060 unit. Did you just open up the heater line to the beam tube? I like the idea of conserving the Cs when pumping down the tube for maintenance. Regards, Tom - Original Message - From: "John Miles" To: "'Discussion of precise time and

Re: [time-nuts] Normal operating specs of a Morion MV89?

Just put a 47 or 56 ohm resistor from the output pin to ground and look at it with a X10 scope probe. Do you get a sine wave? Over 1 volt pp? Otherwise, you can open up the can and replace the output chip capacitor. Regards - Original Message - From: "Scott Stobbe"

Re: [time-nuts] 53132A triggering

- Original Message - From: "Charles Steinmetz" To: Sent: Friday, September 16, 2016 5:46 PM Subject: Re: [time-nuts] 53132A triggering Bob wrote: Set it to: 1) DC coupled (AC does not go low enough) 2) 50 ohms if your driving source

Re: [time-nuts] SR620 Problem

You might say where you are. Maybe someone lives close that can assist you. Regards, Tom - Original Message - From: "Don@True-Cal" To: "'Time Nuts Group'" Sent: Monday, August 29, 2016 5:17 PM Subject: [time-nuts] SR620 Problem Hello

Re: [time-nuts] DIY VNA design [VNA-Nuts?]

Maybe do it on Mewe.com? - Original Message - From: "Oz-in-DFW" To: Sent: Monday, August 22, 2016 11:53 AM Subject: Re: [time-nuts] DIY VNA design [VNA-Nuts?] So is it time for VNA-Nuts? I can probably host it. -- mailto:o...@ozindfw.net Oz

Re: [time-nuts] Working with SMT parts.

Bill, that is a great deal for $99 for the full package. Very easy to use and learn. Thanks for the link. Regards, Tom WA3PZI - Original Message - From: "wb6bnq" To: "Discussion of precise time and frequency measurement" Sent: Friday, August

Re: [time-nuts] Safely getting the electrical length of a connected antenna feedline

If you have a function generator with a sync output, you can use that pulse into a T connector with your scope to do a TDR measurement of the cable. If you have a scrap of the new cable, you can use that to calibrate the setup. Regards, Tom - Original Message - From: "Bob Stewart"

Re: [time-nuts] GPS antenna selection

Do you have a picture of the balcony? - Original Message - From: "Herbert Poetzl" To: Sent: Thursday, August 04, 2016 5:29 PM Subject: [time-nuts] GPS antenna selection Dear fellow time-nuts! I'm currently investigating my options

Re: [time-nuts] HP 106a oscillator connectors question

I've seen these used for accelerometer cables. http://www.ebay.com/itm/Wilcoxon-Meggitt-731-207-Low-Frequency-Seismic-Accelerometer-/301611300986?hash=item46396f387a:g:~vcAAOSwBahVPrby

Re: [time-nuts] patents and hobbyist projects

- Original Message - From: "Brooke Clarke" To: "Discussion of precise time and frequency measurement" Sent: Saturday, May 14, 2016 7:54 PM Subject: Re: [time-nuts] patents and hobbyist projects Hi Attila: In the late 1950s I bought an

Re: [time-nuts] Spectrum Analyzer Specifications

Most of the USB sound cards have a capacitor coupled input. If you jumper the cap they will go down to DC. T - Original Message - From: "Richard (Rick) Karlquist" To: "Discussion of precise time and frequency measurement" Sent: Thursday,

Re: [time-nuts] LPRO-101 BITE (~lock) Signal Always Low

- Original Message - From: "Wayne Holder" To: "Discussion of precise time and frequency measurement" Sent: Monday, March 21, 2016 9:42 PM Subject: [time-nuts] LPRO-101 BITE (~lock) Signal Always Low I have a surplus LPRO-101 that seems

Re: [time-nuts] Fw: 5065

Most of the time I have seen the MS3106 style connectors used for power on mil spec applications. Does this one look like it is right? http://www.mouser.com/ProductDetail/Amphenol-Industrial/MS3106F14S-1S/?qs=sGAEpiMZZMv%2fye0hRulZR2pdaTIihrgU32yg4H0jMKs%3d If so, you should be able to get it

Re: [time-nuts] Old xtal filter

- Original Message - From: "Joseph Gray" To: "Discussion of precise time and frequency measurement" Sent: Sunday, March 06, 2016 2:31 PM Subject: [time-nuts] Old xtal filter Assuming I made the pictures small enough, attached are two images

Re: [time-nuts] Inside a CTS 1960017 OCXO

- Original Message - From: "Daniel Watson" To: Sent: Saturday, February 27, 2016 11:48 AM Subject: [time-nuts] Inside a CTS 1960017 OCXO Hi, I'm sure many of you are tracking the cheap CTS 10MHz OCXOs available on eBay right now. I

Re: [time-nuts] Time syncing WiFi routers using FM radio

Hi Mark, Well, there is a measurable advantage with slotted TDMA over the random access scheme used now. whether there is enough accuracy in processing the very low bandwidth of the RDA payload is questionable plus you do need to recover the subcarrier from the FM payload. Maybe a higher

Re: [time-nuts] Important parameters for a GPS/GNSS antenna

How about a laser diode and pin photo detector? You should be able to get nanosecond resolution with light. - Original Message - From: Tim Shoppa tsho...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thursday, May 07, 2015 2:43 PM

Re: [time-nuts] [Bulk] Re: [Bulk] Re: Ultra High Stability Time Base Options for 53132A

Hi Joe, You might upload them to KO4BB.com with a short note on what they are. There is a 53132 directory there. Regards, Tom - Original Message - From: J. L. Trantham jlt...@att.net To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com Sent: Sunday, April

Re: [time-nuts] Looking for advice to get a submillisecond setup

- Original Message - From: Jim Lux jim...@earthlink.net To: time-nuts@febo.com Sent: Friday, February 20, 2015 10:25 AM Subject: Re: [time-nuts] Looking for advice to get a submillisecond setup On 2/20/15 6:30 AM, Chris Albertson wrote: I think the easiest cable to make really

Re: [time-nuts] DDS on AD9852

- Original Message - From: d0ct0r t...@patoka.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, January 17, 2015 12:02 AM Subject: [time-nuts] DDS on AD9852 Hello, I would like to ask some advise about the signal distortion I get

Re: [time-nuts] Lucent KS-24361 / Z3810A : problem with Z3812A/REF 0 unit power up?

The interface jumper cable has several short pins that sometimes do not make a good connection. You might check that it is fully plugged in on both ends and that all 15 pins look ok. The cable crosses over the pins such that pin 1 of one end goes to pin 15 of the other and so on. There are

Re: [time-nuts] Ball/Efratom MFS-209 Rubidium GPSDO...

Nice work Chuck. So now you have a many port house reference that should last for many years. My unit took a long time to start from cold, I think it is operating in position mode and takes time to settle on the location. Regards - Original Message - From: Chuck Harris

Re: [time-nuts] 1900kHz radiolcation testing on east coast US?

They may also be modulating it to spread out the peak energy to meet EMI requirements. Tom - Original Message - From: Chuck Harris cfhar...@erols.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sunday, December 07, 2014 8:41 PM Subject: Re:

Re: [time-nuts] tcxo

Bob, if you are like me, you probably don't know where they all are, even if you wanted to count them. :) - Original Message - From: Bob Camp kb...@n1k.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sunday, December 07, 2014 8:51 PM Subject:

Re: [time-nuts] Lucent 24361 15 Mhz

Best to remove the front panel and take it out the front. Still, it's tight and will require some contortions. Tom WA3PZI - Original Message - From: paul swed paulsw...@gmail.com To: Time-nuts time-nuts@febo.com Sent: Sunday, November 30, 2014 9:01 PM Subject: [time-nuts] Lucent

Re: [time-nuts] STUPID QUESTION: Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812

Yes, and the antenna voltage is 5 volts. So be sure to use a 5 volt antenna. Tom - Original Message - From: Anthony Roby ar...@antamy.com To: w...@aol.com; Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tuesday, November 18, 2014 11:49 AM Subject: Re:

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

That first spike falls right at 60 Hz. I wonder if your test setup is picking up some hum? Tom - Original Message - From: S. Jackson via time-nuts time-nuts@febo.com To: kb...@n1k.org; time-nuts@febo.com Sent: Monday, November 17, 2014 2:26 PM Subject: Re: [time-nuts] Lucent

Re: [time-nuts] KS-24361 NO GPS

But remember why it was used. If there was a failure of one of the modules, it is necessary to do a hot swap of the defective module. Many of these cell sites (and simulcast PS sites) have a spec on availability up time and MTBF. Loss of site time reference counts as the site being down and

Re: [time-nuts] Electrolytic Capacitor Question

- Original Message - From: Perry Sandeen via time-nuts time-nuts@febo.com To: time-nuts time-nuts@febo.com Sent: Saturday, November 08, 2014 6:32 PM Subject: [time-nuts] Electrolytic Capacitor Question List, OK everybody, let’s not get our pacemakers wound upG The problem. (Long

[time-nuts] Ball Efratom MFS-209 Rubidium GPS Frequency Standard Unit *MRK *MGPS*

This seller has three more of these units. They have a GPS disciplined OCXO and a disciplined Rb Osc. Normal operation used the Rb and fail over to a OCXO. Each unit has 28 output ports for the 10 MHz and 28 output ports for the 1-PPS all on the rear. The run on AC or 28 volts DC. Send a

Re: [time-nuts] Ball Efratom MFS-209 Rubidium GPS Frequency Standard Unit *MRK *MGPS*

Correction! The distribution is configured for 5 MHz, not 10. There is 10 MHz available on two front panel BNC connectors. However, I think that can change. I'm looking. Tom - Original Message - From: Tom Miller tmiller11...@verizon.net To: time-nuts@febo.com Sent: Thursday

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

Some of the parts on the underside are to provide power to the antenna. It does not use the GPS rx to do that. I guess they also detect any antenna fault. - Original Message - From: Anthony Roby ar...@antamy.com To: Discussion of precise time and frequency measurement

Re: [time-nuts] Z3812 Diag port data? RE: time-nuts Digest, Vol 124, Issue 26

If they are straight wired pin 1 to pin 1, pin 2 to pin 2, etc, they will not work. - Original Message - From: Don Latham d...@montana.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tuesday, November 04, 2014 1:23 AM Subject: Re: [time-nuts]

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

Another mystery - what is on the three short pins? Usually that is done for hot-plugging things and connects the ground first before the power is applied. In this case, maybe it is some critical data lines that do not want dirty signals? I will play some more later tonight. Regards, Tom

Re: [time-nuts] HP 5300B - HP 5308A Counter Time Base Question...

Hi Bert, The service manual for the 5300B is on the keysight.com site under manuals. http://www.keysight.com/main/techSupport.jspx?searchT=5300Bid=5300B:epsg:propageMode=OVpid=5300B:epsg:procc=USlc=eng Do you have a frequency reference (house standard) that you can use to adjust the reference

Re: [time-nuts] UPDATE: HP 5300B - HP 5308A Counter Time Base...

the experience to question its accuracy. On my unit the oscillator adjustment marking is gone, but the hole for the adjustment thankfully is still there : I'll let you know how it goes - should be a simple tweak. Thanks Guys, Burt K6OQK From: Tom Miller tmiller11...@verizon.net Subject: Re: [time-nuts

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

I thought so too. There is an ultracap in each unit. Tom - Original Message - From: Mike Seguin n1...@burlingtontelecom.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Friday, October 31, 2014 12:19 PM Subject: Re: [time-nuts] Lucent KS-24361,

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

Task 1 complete. Pin-1 - Pin-15 Pin-2 - Pin- 14 Pin-3 - Pin- 13 ... ... Pin-14 - Pin- 2 Pin-15 - Pin-1 Shell - Shell Regards, Tom - Original Message - From: Bob Camp kb...@n1k.org To: n1...@burlingtontelecom.net; Discussion of precise time and frequency measurement

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

The fault light will come on until both oscillators have locked. It takes a long while, at least on mine. I think it needs to establish the position before everything is stable. - Original Message - From: Anthony Roby ar...@antamy.com To: Discussion of precise time and frequency

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

Hi Bob, Most of the answers were covered with Stu Cobb's original message from 10/20/14 copied below. - Original Message - From: Bob Camp kb...@n1k.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, October 29, 2014 6:55 PM Subject:

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

More on the 10 MHz output. The duty cycle is 60/40%, ground referenced waveform (bottom of waveform at 0 volts). It wants to see 50 ohms for termination. Syncronis with the 15 MHz sine output and seems to come from a divide by 1.5 divider. I have more digging to do but it's late. Regards,

Re: [time-nuts] Z3812/KS-24361 PDF?

There are a few parts missing on the board without the GPS Rx. But at least you have a model to copy from. Sure wish they had used 10 MHz for the station reference. I don't have anything that will use 15 MHz. And the 10 MHz test port is really dirty. - Original Message - From:

Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

Until you have the two units tied together and GPS ok and the Fault light out, you won't see the 15 MHz signal. You should see a 5 volt pp square wave of sorts coming out of the 10 MHz port. I found a clean 10 MHz signal on the collector of Q208 and several other points. These are on the back

Re: [time-nuts] float chargers for oscillator backup power

Hi Jim, I think these chargers are only meant for float charging the battery. They are not meant to supply a load (GPSDO) current. It is more for connecting to your motorcycle or tractor battery and keeping it fully charged over winter storage conditions. I just picked up a MeanWell 24 volt

Re: [time-nuts] Lucent KS-24361/Z3812A GPSDO initial setup

These units are ideal for powering via a float charged lead acid battery. Use two 12 volt / 7 AH batteries in series and adjust the regulated float power supply to 28.0 volts. Be sure to use a diode from the supply to the battery just in case the supply can't be back fed during a power fail.

Re: [time-nuts] Lucent KS-24361/Z3812A GPSDO initial setup

can mean the diff between 12 - 24 months v.s. 5 - 7 years service life. On 10/25/14, 11:39 AM, Tom Miller wrote: These units are ideal for powering via a float charged lead acid battery. Use two 12 volt / 7 AH batteries in series and adjust the regulated float power supply to 28.0 volts. Be sure

Re: [time-nuts] LTE-Lite module

This looks pretty interesting: 74G series PO74G74 http://www.ebay.com/itm/330551715157?_trksid=p2060778.m1438.l2649ssPageName=STRK%3AMEBIDX%3AIT#ht_411wt_664 600+ MHz cmos 3.5 volt Tom - Original Message - From: S. Jackson via time-nuts time-nuts@febo.com To: kc0...@gmail.com;

Re: [time-nuts] What sort of oscillator is this?

Looks like I am having crow for lunch today. I did find the 1D5 installation instructions and at first it looked like the standard OCXO package used in many HP instruments. But some closer reading shows that it may in fact be a 50 MHz TCXO. Tom - Original Message - From: Dr. David

Re: [time-nuts] What sort of oscillator is this?

Dave, do you have access to a good counter? If so, you could profile the warm-up characteristic of the reference from a cold start. Then you would know if an oven is involved. Tom - Original Message - From: Tom Van Baak t...@leapsecond.com To: Discussion of precise time and frequency

Re: [time-nuts] What sort of oscillator is this?

, September 28, 2014 9:43 PM Subject: Re: [time-nuts] What sort of oscillator is this? On 29 Sep 2014 02:05, Tom Miller tmiller11...@verizon.net wrote: Dave, do you have access to a good counter? Not really. I have an HP 7 modular measurement system, which has all the bits for a 22 GHz spectrum

Re: [time-nuts] What sort of oscillator is this?

OCXO - Original Message - From: Dr. David Kirkby (Kirkby Microwave Ltd) drkir...@kirkbymicrowave.co.uk To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, September 27, 2014 5:36 PM Subject: [time-nuts] What sort of oscillator is this? The 10

Re: [time-nuts] Correcting jitter on the 1 PPSsignalfromaGPSreceiver.

Fast risetime pulses _are_ RF and need to be treated as such. Tom - Original Message - From: Tom Van Baak t...@leapsecond.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, September 15, 2014 9:43 AM Subject: Re: [time-nuts] Correcting

Re: [time-nuts] Correcting jitter on the 1 PPSsignalfromaGPSreceiver.

PPSsignalfromaGPSreceiver. On 9/15/2014 10:01 AM, Tom Miller wrote: Fast risetime pulses _are_ RF and need to be treated as such. You say that as if simply saying it provides an explanation, or even a reason. Exactly what ill effect on a triggered measurement is there if one does not terminate a PPS signal

Re: [time-nuts] HP5370 extender cards?

Sure. I bet they would fit other instruments also. How about a source for connectors? Tom . - Original Message - From: Mark Sims hol...@hotmail.com To: time-nuts@febo.com Sent: Wednesday, August 13, 2014 4:43 PM Subject: [time-nuts] HP5370 extender cards? Well, after doing my

Re: [time-nuts] GPS multipath

Don't forget that the polarity of the reflection will reverse. RCP LCP. and a 20 dB loss will occur. Tom - Original Message - From: Jim Lux jim...@earthlink.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Saturday, August 09, 2014 11:31 AM

Re: [time-nuts] Tektronix TM500 extender cable ki

Mark, that is a nice idea and much easier to construct. Count me in for two sets. Regards, Tom - Original Message - From: Mark Sims hol...@hotmail.com To: time-nuts@febo.com Sent: Monday, August 04, 2014 2:20 PM Subject: [time-nuts] Tektronix TM500 extender cable ki I have seen the

Re: [time-nuts] Tektronix TM500 extender cable kit

Except for the three wide units such as the CG5011, CG551, etc. Tom - Original Message - From: R.Phillips phill...@btinternet.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, August 04, 2014 12:11 PM Subject: Re: [time-nuts] Tektronix

Re: [time-nuts] OT Gel Cell question

There are some other failure modes for gel cell (and other lead acid types) batteries. One is a shorted cell caused be the plates warping and breaching the separator insulation. This is not recoverable. Another more likely failure is corrosion of the connections to the plates. Also not

Re: [time-nuts] WWVB updated remodulator schematic 2 mistakes and aquestion

How does the 3.3 volts get into the Rx chip? Tom - Original Message - From: paul swed paulsw...@gmail.com To: paul swed paulsw...@gmail.com; Time-nuts time-nuts@febo.com Sent: Tuesday, July 08, 2014 2:50 PM Subject: [time-nuts] WWVB updated remodulator schematic 2 mistakes and

Re: [time-nuts] Weather/units question for European members

For civilian use, Miles/hour and inches Hg. Aviation and marine would be knots and inches Hg. Tom - Original Message - From: Mark Sims hol...@hotmail.com To: time-nuts@febo.com Sent: Friday, May 23, 2014 9:16 PM Subject: [time-nuts] Weather/units question for European members I am

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

Your oscillator is on its way. I set it right on 10. MHz against a GPSDRb house standard. You will get a better waveform out if it sees about a 100 - 200 ohm termination, though the edge is nice and sharp with some peaking overshoot. You might get a bit more stability if you can add

Re: [time-nuts] First success with very simple, very low cost GPSDO

Don't you also need to wait for the GPS at first power up? - Original Message - From: Charles Steinmetz csteinm...@yandex.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thursday, April 10, 2014 3:31 PM Subject: Re: [time-nuts] First success with

Re: [time-nuts] Is this ocxo salvageable?

I would agree with David. Or there is a SMT resistor or cap that is broken. As to opening the can, do you have a vacuum desoldering station? I usually use a good iron the heat the seam and at the same time suck out as much solder as possible. Then use a small flat blade screwdriver to pry

Re: [time-nuts] GPSDO control system

You are nine days too early. :) Tom - Original Message - From: Chris Albertson albertson.ch...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Sunday, March 23, 2014 5:26 PM Subject: Re: [time-nuts] GPSDO control system I'm working on a

Re: [time-nuts] FSCM 38243 Power Distribution Module

- Original Message - From: d0ct0r t...@patoka.org To: time-nuts@febo.com Sent: Sunday, March 02, 2014 12:54 AM Subject: [time-nuts] FSCM 38243 Power Distribution Module Does anybody knows if FSCM 38243 8-way P/D module is suitable for 10MHZ frequency ? The module I have, has no

Re: [time-nuts] Another atomic clock question

- Original Message - From: Hal Murray hmur...@megapathdsl.net To: Bob Albert bob91...@yahoo.com; Discussion of precise time and frequency measurement time-nuts@febo.com Cc: hmur...@megapathdsl.net Sent: Sunday, March 02, 2014 2:45 AM Subject: Re: [time-nuts] Another atomic clock

Re: [time-nuts] FSCM 38243 Power Distribution Module

It looks like the input hits a 2 way splitter that drives each of four ports. Most of these have at best a 3 dB loss, more like 4.5 dB. Then it each of those gets split again to drive two ports. Then another split to each port. So lets say at best it is 3 + 3 +3 = 9 dB. But being broadband, I

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

Hi Dan, Yes, it is Cesium Beam Tube. Maybe someone can tell me the best way to search the time-nuts archive. Do you need to download all the files to a common DB? Regards, Tom - Original Message - From: Dan Kemppainen d...@irtelemetrics.com To: time-nuts@febo.com Sent: Friday,

Re: [time-nuts] trimble antenna connector

You might TDR an F connector splice once. the F connectors are really pretty good. Tom - Original Message - From: Richard Solomon w1...@earthlink.net To: time-nuts@febo.com Sent: Friday, October 04, 2013 3:26 PM Subject: Re: [time-nuts] trimble antenna connector I expect because

Re: [time-nuts] Fw: FTS 4060 Cesium Time Frequency Standard, Datum

, the frequency matches up when the control (meter 4) passes 3.2 volts. There is no movement in the Beam current (meter 3) as control sweeps. Tom - Original Message - From: Tom Knox To: Tom Miller ; Time-Nuts Sent: Wednesday, October 02, 2013 2:00 PM Subject: RE: [time-nuts] FTS 4060

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

working. Bob On Oct 1, 2013, at 9:53 PM, Tom Miller tmil...@skylinenet.net wrote: Update. I received the FTS 4060 unit and guess what - it does not work. So a few questions to the experts on this list- 1) How can I verify that the CBT is in fact bad? Is there any easy way to confirm

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

Hello Corby, Thanks for the help. Yes, could you copy me on the information for the U1 chip? I do not have anything other than the user manual from Brooke. At this time, anything will be a great help. Best regards, Tom - Original Message - From: cdel...@juno.com To:

[time-nuts] Fw: FTS 4060 Cesium Time Frequency Standard, Datum

. Tom - Original Message - From: Tom Knox To: Tom Miller ; Time-Nuts Sent: Wednesday, October 02, 2013 2:00 PM Subject: RE: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum If anyone has a service manual I am also very interested. Thanks Thomas Knox From

Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

, is there any value in the rest of the unit? This one has the display clock and the 5 MHz and 100 kHz options. Or should I just bury it in the back yard and lick my wounds? Regards, Tom - Original Message - From: Tom Miller tmil...@skylinenet.net To: Discussion of precise time

Re: [time-nuts] HP5061B Beam Tubes

Sure be nice if you could put them up on some photo site and let us see them. - Original Message - From: ewkehren ewkeh...@aol.com To: time-nuts@febo.com Sent: Tuesday, September 24, 2013 12:28 PM Subject: Re: [time-nuts] HP5061B Beam Tubes Did send Bill some pictures off list

[time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum

While we are on Cs standards, is there technical information (service manual) available for the Datum FTS 4060 Cesium Time Frequency Standard and its options? Thank you, Tom ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] New NTBW50AA

In normal float battery service, the voltage is about 56 volts. During a equalize charge, it will be close to 60 volts. The unit you have most likely spent all its life at 56 volts. The 48 volt service comes from the nominal end of capacity voltage of a 48 volt (24 cells) at 2.0 volts (or less)

Re: [time-nuts] sub-minute time-precision in court-case

- Original Message - From: Jim Lux jim...@earthlink.net To: Poul-Henning Kamp p...@phk.freebsd.dk Cc: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tuesday, September 03, 2013 7:59 PM Subject: Re: [time-nuts] sub-minute time-precision in court-case

Re: [time-nuts] New Member

24 Volt http://www.ebay.com/itm/Power-Volt-BVA-24AS1-2-Power-Supply-24VDC-1-2amps-Used-Warranty-/200923505233?pt=LH_DefaultDomain_0hash=item2ec7f96251

Re: [time-nuts] Rb video

Five (5) MHz is what normal NTSC video needs at a minimum. Most of those VDA units are good to 20 MHz, HD units sometimes go the 100's of MHz. They all seem to handle a 10 MHz house clock just fine. But to satisfy any doubts, look up the data sheet for the op amps used. Regards, Tom -

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