Re: [time-nuts] Any Isotemp OCXO107-10 Info?

The specs I found talked about double ovens and a 16 bit D/A converter for disciplining the frequency. Mine doesn't appear to have either of those. Sounds like the OCXO 107 series included a lot of different variants. Ed On 3/11/2014 3:48 PM, Poul-Henning Kamp wrote: In message <531f7161.2

Re: [time-nuts] ELEMEK LXK WWVB Receiver

From an ad in Radio-Electronics June 1980, it mentions that it phase-locks to the carrier. I expect the new format of WWVB will give it fits. https://archive.org/stream/radio_electronics_1980-06/Radio_Electronics_June_1980#page/n71/mode/2up/search/wwvb 73, David N1HAC On 3/11/14 1:55 PM, T

[time-nuts] Frequency Counter using OCXO and MCU

Hello, I am experimenting to build frequency counter using external OCXO and ST32 MCU. The OCXO is external DATUM 2750013-1 device which produce 10Mhz sine wave. I connected its output to OC_IN on MCU. I have few challenges now. First, looks like I need to create some delay to turn on MCU _

[time-nuts] Datum 9390-55185 information wanted

Hi everyone, I'm a newbie here at time-nuts, but I have read the postings for a while. I just got a Datum 9390-55184, this is a older version (88 mm height) and a 1 MHz oscillator, no oscillator output, but timecode. After an adjustment of the oscillatorfrequency the gps receiver is tracking s

Re: [time-nuts] Any FE-5650A help our there?

Elio (in 2012) has done some work on the FEI rubidium . On Tue, Mar 11, 2014 at 10:44 PM, Skip Withrow wrote: > Hello Nuts, > > Looking for some help with an FEI FE-5650A. This is one of the units that > is surplus from the telecom industry w

Re: [time-nuts] Any Isotemp OCXO107-10 Info?

In message <531f7161.2080...@sasktel.net>, Ed Palmer writes: >I just picked up an Isotemp OCXO107-10 Oscillator. I can't remember which variant the on I have is. I'll check tomorrow. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD

[time-nuts] Any FE-5650A help our there?

Hello Nuts, Looking for some help with an FEI FE-5650A. This is one of the units that is surplus from the telecom industry with the Option 02 serial interface. Unit was working fine - locked, and was able to control the frequency by issuing commands to the serial port. Then something funny happe

[time-nuts] Any Isotemp OCXO107-10 Info?

I just picked up an Isotemp OCXO107-10 Oscillator. I thought it looked like it might be interesting, but it turns out that it's better than I thought. It's got a Dewar flask! I found the specs, but it didn't mention anything about that. So, before I let the magic smoke out, does anyone have

Re: [time-nuts] ELEMEK LXK WWVB Receiver

A good point, David. I just picked it up to play with and thought it would be helpful to have the manual or a schematic. I did see that article but it did not have much more information than that it was for WWVB and the new price was $99! Thanks for looking. Tom Holmes, N8ZM -Original Messa

Re: [time-nuts] ELEMEK LXK WWVB Receiver

From an ad in Radio-Electronics June 1980, it mentions that it phase-locks to the carrier. I expect the new format of WWVB will give it fits. https://archive.org/stream/radio_electronics_1980-06/Radio_Electronics_June_1980#page/n71/mode/2up/search/wwvb 73, David N1HAC On 3/11/14 1:55 PM, T

Re: [time-nuts] HP 58503A acurate UTC time

> a.. So how do I set it to read real time ? My notes say that for a Z3801A: :diag:gps:utc 1 It may need a reboot. A google search for >HP 58503A manual< gets lots of hits that look interesting. This is the top of the list: 58503B GPS Time and Frequency Reference ... - LeapSecond.com ww

Re: [time-nuts] HP 58503A acurate UTC time

> a.. So how do I set it to read real time ? Try :DIAG:GPS:UTC 1 > b.. And is there a way of dimming or tuning off the display ? No software command, but you try adding a resistor or switch to the VFD power. > c.. Finally, how do I stop it doing a survey every time ? Try :GPS:POS: ... /

Re: [time-nuts] ELEMEK LXK WWVB Receiver

A long shot that has worked for me in the past is to put a listing asking for information on Craigslist in the town/area of interest -pete On Tue, Mar 11, 2014 at 10:55 AM, Tom Holmes wrote: > Does anyone have any information on this box? > > > > It has 60 kHz and 100 kHz outputs, runs on 12 V

[time-nuts] HP 58503A acurate UTC time

From: Dave Cawley Timestep Dartmouth Tel: +44 (0) 1803 833366 Fax: +44 (0) 1803 839498 HP 58503A accurate UTC time I have the version with the display panel and also the SatStat50 software all working fine. The time on both the display and PC appears to be 16 seconds fast. I queried the l

[time-nuts] ELEMEK LXK WWVB Receiver

Does anyone have any information on this box? It has 60 kHz and 100 kHz outputs, runs on 12 VDC. Not much info found on the web so far. Tom Holmes, N8ZM ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.co

Re: [time-nuts] How to measure phase noise of HCMOS oscillators?

On 10/03/14 16:33, Anders Time wrote: A while a go i bought some low phase noise Crystek CVHD-950 and now I want to meas the phase noise of the oscillators. Is it best to try to impedance match the output signal and filter and amplify the hcmos before i feed it in to the phase detector? or Just h

Re: [time-nuts] How to measure phase noise of HCMOS oscillators?

Your main concern will be injection locking, followed by the additive noise of the buffer amps that you use to prevent it. The CMOS output buffers in the oscillators themselves may provide enough isolation, but don't count on it. Injection locking is easy to spot with a scope. You can adjust the