Re: [time-nuts] N1JEZ GPSDO Monitor Software

http://infixtechnologies.com/products/GPSMonitor/GPSMonitor.php -=Bryan=- > From: w1...@earthlink.net > To: time-nuts@febo.com > Date: Wed, 14 Sep 2016 20:51:57 -0700 > Subject: Re: [time-nuts] N1JEZ GPSDO Monitor Software > > GPS Monitor is too vague to do a Google on, can you be a bit more

Re: [time-nuts] N1JEZ GPSDO Monitor Software

GPS Monitor is too vague to do a Google on, can you be a bit more specific ? Tnx, Dick, W1KSZ -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bryan _ Sent: Wednesday, September 14, 2016 6:40 PM To: TIme Nuts Subject: Re: [time-nuts] N1JEZ GPSDO Monitor

Re: [time-nuts] HP-105B Battery Replacement?

Thanks, Brooke, I'll price new Ni-Cads. I wasn't thinking of lead-acid (gel cells) but rather lithium rechargeable, providing I can find a type that won't catch fire and will work with the 105B'scircuits. Jeremy On Wednesday, September 14, 2016, Brooke Clarke wrote: > Hi

Re: [time-nuts] HP-105B Battery Replacement?

Hi Alex: Yes, I'm recommending Ni-Cad but NOT any acid type. -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html The lesser of evils is still evil. Original Message Hi Brooke, sorry I have to disappoint you; Ni-Cd batteries do

Re: [time-nuts] HP-105B Battery Replacement?

Hi Brooke, sorry I have to disappoint you; Ni-Cd batteries do not use any acid, they have K-OH kalium hidrioxid [potassium hydroxide for anglophone ] as electrolyte and they are normally very air-tide, and widely used in radios. 73 KJ6UHN Alex On 9/14/2016 4:45 PM, Brooke Clarke

Re: [time-nuts] N1JEZ GPSDO Monitor Software

Let me try this again, for some reason my email strips out on this list Lady Heather, WinOncore12, SirfOnCore, VisualGPSXP, GPS Monitor. -=Bryan=- > From: bpl...@outlook.com > To: time-nuts@febo.com > Date: Wed, 14 Sep 2016 18:22:35 -0700 > Subject: Re: [time-nuts] N1JEZ GPSDO Monitor Software

Re: [time-nuts] N1JEZ GPSDO Monitor Software

Few that I have used Lady HeatherWinOnore12SirfOnCoreVisualGPSXP -=Bryan=- > From: w1...@earthlink.net > To: time-nuts@febo.com > Date: Wed, 14 Sep 2016 09:00:16 -0700 > Subject: [time-nuts] N1JEZ GPSDO Monitor Software > > I found one that I built many years ago and would like to see if it

Re: [time-nuts] HP-105B Battery Replacement?

Hi Jeremy: It's a very bad idea to put any battery with acid in an enclosure that has electronics since if it vents the acid will etch the PCBs. Guess how I learned this. I got a great price on a Gibbs Frequency Standard because the oven no longer worked. http://prc68.com/I/office_equip.html

[time-nuts] HP-105B Battery Replacement?

I recently acquired a nice HP-105B, serial prefix 1240A, and like Perry Sandeen (posted here 10 May 2016) was pleasantly surprised to find a 10811-type oscillator inside in place of the old blue oven. Well, the oscillator isn't actually labelled "10811" but has a label "Serial No. 3010A62646 /

[time-nuts] Lady Heather's latest bells and whistles

While on the subject of how GPS receivers do or don't report the day that a leapsecond will occur, I fired up a Nortel/Trimble NTWB receiver to see what it said. It has the standard Trimble packet (0x58:0x05) from which one can calculate the day, but Lady Heather was reporting "Leap

Re: [time-nuts] Ettus OctoClock measurements

Hoi Anders, On Mon, 12 Sep 2016 17:54:57 +0300 Anders Wallin wrote: > The results are decent but not stellar: > http://www.anderswallin.net/2016/09/ettus-octoclock-distribution-amplifier/ > > In particular the AM noise on the 10MHz looks high. Any

Re: [time-nuts] Clean 10 MHz ref

On 9/14/2016 2:59 AM, David J Taylor wrote: It is non-trivial to set other than a few embedded frequencies with the existing software. There has been a veiled promise of improved software that remains unfulfilled. It is a GPSDO, although the internal oscillator is a TCXO, not an OCXO. Mine

[time-nuts] HP-105B Battery Replacement?

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Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

Just wanted to add, their US distributor has one with a custom xtal that claims even lower phase noise and has provided a plot comparing the two I see the US distributor says the "custom" unit's phase noise "improv[es] on an already impressive figure" of the stock unit. But in reality, even

[time-nuts] N1JEZ GPSDO Monitor Software

I found one that I built many years ago and would like to see if it still works. I forget which monitoring software I used, but it most likely is woefully out of date today. Anything else (besides TAC32) that I could use ? Tnx, Dick, w1KSZ

[time-nuts] Need 10 MHz for DSN space-probe hunting

One thing you can do with a Thunderbolt is to let it settle into to disciplined equilibrium to 10.000 MHz, check the DAC voltage serring, and then switch off disciplining and manually control the EFC DAC. This will improve the phase noise at the expense of frequency drift which may or may

[time-nuts] Lady Heather's latest bells and whistles

I hope to get the next version out in the next couple of weeks... Ahhh, the subtile wonders of calculating when a leapsecond happens... A couple of receivers (like 12 channel Motorola receivers) are nice enough to directly tell you the date of the leapsecond. Tthe Z3801A and Z3812A get it

Re: [time-nuts] Lucent RFTFm-II-XO

As to what you would see, find the manual for the Motorola receiver for details. I don't have the link, but somebody else does. You get some info about the device and info about each satellite. You can use a 422 to USB converter or clip on either wire with a digital scope that decodes simple

Re: [time-nuts] Jim Miller simple GPSDO

There are special "wide-pull-range" VCXO's where a 10MHz unit will indeed have sensitivity of 600Hz/V or more. e.g. http://www5.epsondevice.com/en/products/vcxo_standard/vg4231ca.html I don't know exactly what Epson does inside that particular unit, but a trick to get wide pull range with

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

>Briefly, Mike, there's an easy to use unit here, which takes a puck GPS >antenna and can run off USB +5V: > http://www.leobodnar.com/shop/index.php?main_page=product_info_id=234 > >Perhaps it might meet your needs? > >Cheers, >David Just wanted to add, their US distributor has one with a custom

Re: [time-nuts] Lucent RFTFm-II-XO

Hi These days, a RS-422 to USB adapter is a sub $20 item, even from a “name brand” outfit with real drivers. . If you shop a bit, you can get some dirt cheap USB to 422 adapters at the risk of having issues with the drivers (now or down the road). Bob > On Sep 13, 2016, at 11:44 PM, Chris

Re: [time-nuts] Lady Heather's Tbolt oscillator auto-tune function

Hi > On Sep 13, 2016, at 10:36 PM, Scott Stobbe wrote: > > Hi bob, thank you for the polite response regarding rise time, indeed I > would fully agree. > > The rise time I was referring to was the DAC efc value in the plot mark had > previously attached. He just

[time-nuts] Lady Heather's latest bells and whistles

Hi Mark. > Le 14 sept. 2016 à 03:51, Mark Sims a écrit : > > Okee dokeee... here it is. Not much difference. The initial step is > smaller, but it still spikes. After that things are pretty much the same. > After it cool down, I'm doing another run with the

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

Mike already mentioned he has a Thunderbolt. That product you referenced only has phase noise measurements down to 100Hz offset, but comparing to the Thunderbolt phase noise measurements that Tom posted at the link below, a Thunderbolt running on a good quality linear power supply has about 20dB

Re: [time-nuts] Clean 10 MHz ref

It is non-trivial to set other than a few embedded frequencies with the existing software. There has been a veiled promise of improved software that remains unfulfilled. It is a GPSDO, although the internal oscillator is a TCXO, not an OCXO. Mine runs on even a laptop USB port. Wes

Re: [time-nuts] Jim Miller simple GPSDO

The VCXO sensitivity given is strange as it indicates a far to wide span so I guessed 30ppm and if it is higher it still needs the damping from R2-C2. For the OCXO I used the figures given. With 2Hz per volt and 8 Volt span you have 16Hz of span. 16Hz divided with 10MHz is 1.6ppm (parts per

Re: [time-nuts] Lady Heather's Tbolt oscillator auto-tune function

Hi Scott, The x-axis is shown in the dark blue text to the right of the big time display - 60 minutes total, 5 minutes per division. Peter On 14 September 2016 at 03:52, Scott Stobbe wrote: > Pardon my lack of knowledge regarding Lady Heather, what is the

Re: [time-nuts] Lady Heather's Tbolt oscillator auto-tune function

Mark wrote: Okee dokeee... here it is. Not much difference. The initial step is smaller, but it still spikes. After that things are pretty much the same. After it cool down, I'm doing another run with the initial voltage set to the peak of the spike. Excellent! Many thanks,