[time-nuts] Trimble "Resolution SMTx" GPS Timing Receiver:
Hi folks, I have my little Trimble "Resolution SMTx" GPS module running. Details at: http://members.wideband.net.au/gzimmer/Time/default.html later ... Zim ___ 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] Digitec model 8730A-082 frequency counter
Does anyone have information on the Digitec frequency counter -- model 8730A-082 ? It's from "United Systems Corp" of Dayton Ohio. It covers 5Hz to 600MHz, has a manual frequency adjust and seems stable to about 4Hz in 10MHz over a week+. The only information I can find is this ad reprint from "Broadcast Engineering" May 1976 (page 98) http://www.americanradiohistory.com/Archive-Broadcast-Engineering/BE/70s/BE-1976-05.pdf showing a range of models and stating "oven controlled crystal". Ideally I'd love to get a copy of the manual. ___ 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.
Re: [time-nuts] Interesting HP oscillators...
This document lists that part number... http://www.leapsecond.com/museum/10811a/90027-1.pdf It says (I think -- in a quick scan) that it is mostly the same specs as a 10811 D/E except a narrower EFC tuning range. On 1/13/2014 6:19 PM, Brian, WA1ZMS wrote: I have happened upon a pair of working "HP 10811-like" oscillators. They are marked HP 0507-60219. I do know they came from a special custom 1990's attempt at a single oven version of the Z3801A. Does anyone have any info or specs on such an OCXO? They are surplus to my needs and they both test fine so unless they are determined to be some kind of ultra-low PN oscillator, I could as well offer them for sale to the Time-Nuts group. Comments welcome. Regards, -Brian, WA1ZMS/4 ___ 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 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] Interesting HP oscillators...
I have happened upon a pair of working "HP 10811-like" oscillators. They are marked HP 0507-60219. I do know they came from a special custom 1990's attempt at a single oven version of the Z3801A. Does anyone have any info or specs on such an OCXO? They are surplus to my needs and they both test fine so unless they are determined to be some kind of ultra-low PN oscillator, I could as well offer them for sale to the Time-Nuts group. Comments welcome. Regards, -Brian, WA1ZMS/4 ___ 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.
Re: [time-nuts] Loran-C radio navigation
OK I downloaded the gz file and see additional information. Thanks On Mon, Jan 13, 2014 at 3:50 PM, paul swed wrote: > Matthias > I live in the US on the east coast and do on occasion receive LORAN C from > Europe. But we have a new LORAN occasionally here that behaves much as the > old did though its for time and frequency only. > > Further sitting next to me are 3 X launchpads MSP430s that were so > inexpensive I could not resist picking them up. Though didn't do a thing > with them. Time in the day issue. > > Finally you wrote your program in Forth. Always liked Forth allot. > > So all of that said are there instructions for loading it onto the > launchpad? > Whats required on the frontend from the antenna to the port? > I also have a real LORAN C simulator and also a test set. > > Regards > Paul > WB8TSL > . > > > On Mon, Jan 13, 2014 at 11:11 AM, Matthias Koch < > matthias.k...@hot.uni-hannover.de> wrote: > >> Dear timing geeks and frequency wizards, >> >> I wish to announce a software defined Loran-C longwave radio navigation >> receiver running on STM32F407 ! If you happen to live somewhere on earth >> with Loran-C signal coverage like Europe and parts of Asia, I would like to >> get in contact with you for beta testing out in the wild. >> >> The first experimental release is available now on download section on >> http://mecrisp.sourceforge.net/ >> I have been invited to this list by a discussion on >> http://forum.stellarisiti.com/topic/1807-loran-c-radio-navigation/ >> >> Best wishes from Germany, >> Matthias Koch >> ___ >> 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 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.
Re: [time-nuts] Loran-C radio navigation
Matthias I live in the US on the east coast and do on occasion receive LORAN C from Europe. But we have a new LORAN occasionally here that behaves much as the old did though its for time and frequency only. Further sitting next to me are 3 X launchpads MSP430s that were so inexpensive I could not resist picking them up. Though didn't do a thing with them. Time in the day issue. Finally you wrote your program in Forth. Always liked Forth allot. So all of that said are there instructions for loading it onto the launchpad? Whats required on the frontend from the antenna to the port? I also have a real LORAN C simulator and also a test set. Regards Paul WB8TSL . On Mon, Jan 13, 2014 at 11:11 AM, Matthias Koch < matthias.k...@hot.uni-hannover.de> wrote: > Dear timing geeks and frequency wizards, > > I wish to announce a software defined Loran-C longwave radio navigation > receiver running on STM32F407 ! If you happen to live somewhere on earth > with Loran-C signal coverage like Europe and parts of Asia, I would like to > get in contact with you for beta testing out in the wild. > > The first experimental release is available now on download section on > http://mecrisp.sourceforge.net/ > I have been invited to this list by a discussion on > http://forum.stellarisiti.com/topic/1807-loran-c-radio-navigation/ > > Best wishes from Germany, > Matthias Koch > ___ > 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 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] Loran-C radio navigation
Dear timing geeks and frequency wizards, I wish to announce a software defined Loran-C longwave radio navigation receiver running on STM32F407 ! If you happen to live somewhere on earth with Loran-C signal coverage like Europe and parts of Asia, I would like to get in contact with you for beta testing out in the wild. The first experimental release is available now on download section on http://mecrisp.sourceforge.net/ I have been invited to this list by a discussion on http://forum.stellarisiti.com/topic/1807-loran-c-radio-navigation/ Best wishes from Germany, Matthias Koch ___ 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.
Re: [time-nuts] fast edge, rise time.
Hi, Since there is no interest in my pulse generator maybe one of you knows someone at NBS who can provide a schematic of the generator. It has " NBS Impulse Generator SN 3-75-2 " engraved on the front panel and is ~ 10 x 16 x 17. Thanks, Bill Reed -Original Message- From: Bill Reed Sent: Tuesday, January 07, 2014 7:53 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] fast edge, rise time. Hi, Since you guys are interested in fast pule generators, I have one you may be interested in. I got it in govt. auction about 25 years ago for ~ $ 50.00. I will sell it to anyone for $ 50.00 plus shipping. I prefer to sell to someone who will restore and use it rather than parting it. It has more than $ 50.00 parts in it. There are a 30 turn 6.5 inch diameter hard line, wide band hybrid coupler, diode assembly and several adapters and attenuators. I believe the hard line discharges into a step diode. The power supply includes 200 V plus other voltages. If I remember correctly ( I have no high speed scope now ) the pulse is 2 nanoseconds wide with a 280 picosecond rise time and and 2.5 Vpp. I checked with a 200 MHz digital scope and can see a pulse that verifies my scopes bandwidth. The rate generator works but has problems. See facebook (ree...@otelco.net) for pictures under Impulse. Bill Reed256 586-3446 -Original Message- From: ct1dmk Sent: Sunday, December 29, 2013 7:36 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] fast edge, rise time. Thank you all for your comments on this subject. Happy new year. Luis Cupido. ct1dmk. ___ 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 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 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.
