[time-nuts] looking for data on time code display
A while back I picked up a couple of what Fair Radio was calling data line filters. They have a six-digit Nixie time display (hours, minutes, seconds) and apparently decode and display some kind of analog time code (IRIG, maybe?). It was made sometime in the early 70's; it's wire-wrapped with some op-amp filtering and a bunch of TTL for the decoding. The front panel controls are: rotary switch marked input filter with positions: 250 Hz, 1000 Hz, 20 kHz, 40 kHz, 80 kHz. toggle switch marked 1000 Hz and 250 Hz toggle switch marked reverse code control The rear panel has BNC connectors marked input and output. A yellow sticker on the side says: Ft. Meade DTID: H9823190045862 NSN 6625003684180 User ID: HI90159 I bought them with the intention of scavenging them for parts, then later considered making a Nixie clock out of them. But if I can get a clue as to the time-code they understand, I'd now like to restore them to operating condition. Anyone have any info or even speculation on these ? Best regards, -Steve -- Steve Byan steveb...@me.com Littleton, MA 01460 ___ 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] looking for data on time code display
Hi, From: Steve Byan steveb...@verizon.net NSN 6625003684180 == NSN: 6625-00-368-4180 INDICATOR, DIGITAL D Part No: 0N194800 Price Range: n/a Delivery Range: n/a Mfr/OEM/Agencies: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM, NATIONAL SECURITY AGENCY == Bye, Jean-Louis ___ 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] looking for data on time code display
Hi Maybe you could call them up and ask for information on the system they went with….:)… Sounds like a great way to wind up on a no fly list. Bob On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote: Hi, From: Steve Byan steveb...@verizon.net NSN 6625003684180 == NSN: 6625-00-368-4180 INDICATOR, DIGITAL D Part No: 0N194800 Price Range: n/a Delivery Range: n/a Mfr/OEM/Agencies: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM, NATIONAL SECURITY AGENCY == Bye, Jean-Louis ___ 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] looking for data on time code display
I doubt that you will ever find a manual or schematics, but you should be able to decipher enough of the circuitry to figure out how to fire it up and talk to it. The digits should be arranged in either a counter or individually addressable. If it's a counter, you should be able to find a 1 PPS point somewhere in there to make it at least do that. If there's not a bunch of digital stuff in there - shift registers and such - then it's probably just a counter of 1 PPS from an AM modulated carrier, or maybe FSK, or maybe simply divided down from those frequencies selected on the front panel. If it already lights up, try putting in some signals and see what it does. Ed ___ 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] looking for data on time code display
I looked at your first post again and noticed there were apparently lots of TTL circuitry, so it could be an IRIG code receiver, and you should be able talk to it. If you don't have a source readily available, you may be able to fool it into responding a little to gibberish applied from a modulated signal generator, just to see if it's functional. Ed ___ 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] looking for data on time code display
Fascinating. I also have one of these with slight differences, but it does have a Fort Meade tag. Bought it from a guy on the BoatAnchors list in Atlanta in the dim past. The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104 The rotary switch adds a 160 KHz position. The two switches are marked CODE POLARITY and POWER ON. The rear panel has a 4 pin circular jack labeled AUX and a 24 pin rectangular connector marked PARALLEL. A partly torn tag taped to the top says Made by TRAK, Model ?? 2234/U, SN 517. A plastic envelope contained a DD Form 1348-1A release/receipt document from the Defense Reutilization Marketing Office at Meade. It released 5 of these units worth $1500 each, dated 1-29-98, ship from H98231 (in HTID number above) to SX1213 (marketing office?). Somewhere I'd heard that these units were for locating times on tape recordings of intercepts. The different filter frequencies are for different tape speeds, from high speed search to fine positioning. The code might be IRIG but it could just as easily be something the NSA invented for the purpose. I bought it because I'd visited the NSA museum at Fort Meade and seen the code breaking machines. I didn't find them intimidating at all. The gift shop would sell me a jacket with NSA logos, but I didn't know where I would wear it. There is a certain cachet to having a box that was used by top secret agents to decode radio intercepts. Bill Hawkins P.S. I'd recommend doing some signal tracing from the Input connector. We have no idea what signal levels were used, if it wasn't IRIG. I never found time to do that. -Original Message- From: ed breya Sent: Sunday, December 11, 2011 2:12 PM I looked at your first post again and noticed there were apparently lots of TTL circuitry, so it could be an IRIG code receiver, and you should be able talk to it. If you don't have a source readily available, you may be able to fool it into responding a little to gibberish applied from a modulated signal generator, just to see if it's functional. Ed ___ 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] looking for data on time code display
I did the NSA museum tour too. Well worth the trip. I got a CIA polo shirt at the employee gift shop. Yeah, where do you wear it? I put it on for one of those 9/11 Conspiracy events. Do you work for the CIA? No, I just wear their shirts. -Original Message- From: Bill Hawkins b...@iaxs.net Sender: time-nuts-boun...@febo.com Date: Sun, 11 Dec 2011 15:12:51 To: 'Discussion of precise time and frequency measurement'time-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: Re: [time-nuts] looking for data on time code display Fascinating. I also have one of these with slight differences, but it does have a Fort Meade tag. Bought it from a guy on the BoatAnchors list in Atlanta in the dim past. The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104 The rotary switch adds a 160 KHz position. The two switches are marked CODE POLARITY and POWER ON. The rear panel has a 4 pin circular jack labeled AUX and a 24 pin rectangular connector marked PARALLEL. A partly torn tag taped to the top says Made by TRAK, Model ?? 2234/U, SN 517. A plastic envelope contained a DD Form 1348-1A release/receipt document from the Defense Reutilization Marketing Office at Meade. It released 5 of these units worth $1500 each, dated 1-29-98, ship from H98231 (in HTID number above) to SX1213 (marketing office?). Somewhere I'd heard that these units were for locating times on tape recordings of intercepts. The different filter frequencies are for different tape speeds, from high speed search to fine positioning. The code might be IRIG but it could just as easily be something the NSA invented for the purpose. I bought it because I'd visited the NSA museum at Fort Meade and seen the code breaking machines. I didn't find them intimidating at all. The gift shop would sell me a jacket with NSA logos, but I didn't know where I would wear it. There is a certain cachet to having a box that was used by top secret agents to decode radio intercepts. Bill Hawkins P.S. I'd recommend doing some signal tracing from the Input connector. We have no idea what signal levels were used, if it wasn't IRIG. I never found time to do that. -Original Message- From: ed breya Sent: Sunday, December 11, 2011 2:12 PM I looked at your first post again and noticed there were apparently lots of TTL circuitry, so it could be an IRIG code receiver, and you should be able talk to it. If you don't have a source readily available, you may be able to fool it into responding a little to gibberish applied from a modulated signal generator, just to see if it's functional. Ed ___ 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] looking for data on time code display
I think I've seen IRIG Time Code SW for the PC that uses a sound card, but I forget where. The various IRIG formats are well dovumented. And yes, Time Code readers were used with high and low speed searches on IRIG tape recorders. You set Start and Stop points and the tape would Play, Stop, Reverse, Stop, Play as you demuxed/analyzed the data. Typically there were 5 or 12 tracks of analog data and two time code tracks. Sometimes digit was recorded in roughly the same way. -John Fascinating. I also have one of these with slight differences, but it does have a Fort Meade tag. Bought it from a guy on the BoatAnchors list in Atlanta in the dim past. The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104 The rotary switch adds a 160 KHz position. The two switches are marked CODE POLARITY and POWER ON. The rear panel has a 4 pin circular jack labeled AUX and a 24 pin rectangular connector marked PARALLEL. A partly torn tag taped to the top says Made by TRAK, Model ?? 2234/U, SN 517. A plastic envelope contained a DD Form 1348-1A release/receipt document from the Defense Reutilization Marketing Office at Meade. It released 5 of these units worth $1500 each, dated 1-29-98, ship from H98231 (in HTID number above) to SX1213 (marketing office?). Somewhere I'd heard that these units were for locating times on tape recordings of intercepts. The different filter frequencies are for different tape speeds, from high speed search to fine positioning. The code might be IRIG but it could just as easily be something the NSA invented for the purpose. I bought it because I'd visited the NSA museum at Fort Meade and seen the code breaking machines. I didn't find them intimidating at all. The gift shop would sell me a jacket with NSA logos, but I didn't know where I would wear it. There is a certain cachet to having a box that was used by top secret agents to decode radio intercepts. Bill Hawkins P.S. I'd recommend doing some signal tracing from the Input connector. We have no idea what signal levels were used, if it wasn't IRIG. I never found time to do that. -Original Message- From: ed breya Sent: Sunday, December 11, 2011 2:12 PM I looked at your first post again and noticed there were apparently lots of TTL circuitry, so it could be an IRIG code receiver, and you should be able talk to it. If you don't have a source readily available, you may be able to fool it into responding a little to gibberish applied from a modulated signal generator, just to see if it's functional. Ed ___ 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] looking for data on time code display
Any chance of a photo? On 12 December 2011 04:26, Bob Camp li...@rtty.us wrote: Hi Maybe you could call them up and ask for information on the system they went with….:)… Sounds like a great way to wind up on a no fly list. Bob On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote: Hi, From: Steve Byan steveb...@verizon.net NSN 6625003684180 == NSN: 6625-00-368-4180 INDICATOR, DIGITAL D Part No: 0N194800 Price Range: n/a Delivery Range: n/a Mfr/OEM/Agencies: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM, NATIONAL SECURITY AGENCY == Bye, Jean-Louis ___ 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.
Re: [time-nuts] looking for data on time code display
Try their reading room first. http://www.nsa.gov/public_info/foia/reading_room/index.shtml If there is no information in the reading room, do a FOIA. This information is always run past lawyers, not engineers. Don't be surprised if you get a call from whatever NSA calls their legal department. I've had calls from JAG regarding FOIAs. The lawyer more often than not is your friend in FOIA requests. For one thing, if the request is too broad, they can help you narrow down the request. Usually the first 100 pages is free. I have declassified documents that are in excess of 500 pages. For this device, you would probably want to FOIA an operators manual. Too general of a request might get you every memo where the device is mentioned. On 12/11/2011 3:18 PM, Jim Palfreyman wrote: Any chance of a photo? On 12 December 2011 04:26, Bob Campli...@rtty.us wrote: Hi Maybe you could call them up and ask for information on the system they went with….:)… Sounds like a great way to wind up on a no fly list. Bob On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote: Hi, From: Steve Byansteveb...@verizon.net NSN 6625003684180 == NSN: 6625-00-368-4180 INDICATOR, DIGITAL D Part No: 0N194800 Price Range: n/a Delivery Range: n/a Mfr/OEM/Agencies: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM, NATIONAL SECURITY AGENCY == Bye, Jean-Louis ___ 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. ___ 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] looking for data on time code display
On Dec 11, 2011, at 4:12 PM, Bill Hawkins wrote: Fascinating. I also have one of these with slight differences, but it does have a Fort Meade tag. Bought it from a guy on the BoatAnchors list in Atlanta in the dim past. The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104 The rotary switch adds a 160 KHz position. The two switches are marked CODE POLARITY and POWER ON. The rear panel has a 4 pin circular jack labeled AUX and a 24 pin rectangular connector marked PARALLEL. Yeah, mine has those connectors also. Fair also had some with LED displays. A partly torn tag taped to the top says Made by TRAK, Model ?? 2234/U, SN 517. A plastic envelope contained a DD Form 1348-1A release/receipt document from the Defense Reutilization Marketing Office at Meade. It released 5 of these units worth $1500 each, dated 1-29-98, ship from H98231 (in HTID number above) to SX1213 (marketing office?). Somewhere I'd heard that these units were for locating times on tape recordings of intercepts. The different filter frequencies are for different tape speeds, from high speed search to fine positioning. The code might be IRIG but it could just as easily be something the NSA invented for the purpose. Maybe part of Project Boresight? http://jproc.ca/rrp/boresight.html I bought it because I'd visited the NSA museum at Fort Meade and seen the code breaking machines. I didn't find them intimidating at all. The gift shop would sell me a jacket with NSA logos, but I didn't know where I would wear it. There is a certain cachet to having a box that was used by top secret agents to decode radio intercepts. Bill Hawkins P.S. I'd recommend doing some signal tracing from the Input connector. We have no idea what signal levels were used, if it wasn't IRIG. I never found time to do that. Yeah, that'll be on my to-do list. I had hoped the frequencies listed on the controls might trigger some association in someone who's knowledgable about time-codes. 250 Hz doesn't seem to be a legal IRIG time-code frequency, although 1 kHz is. Best regards, Steve -- Steve Byan steveb...@me.com Littleton, MA 01460 ___ 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] looking for data on time code display
On Dec 11, 2011, at 5:25 PM, J. Forster wrote: I think I've seen IRIG Time Code SW for the PC that uses a sound card, but I forget where. http://www.dolben.org/IRIG.php Best regards, -Steve -- Steve Byan steveb...@me.com Littleton, MA 01460 ___ 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] looking for data on time code display
On Dec 11, 2011, at 6:18 PM, Jim Palfreyman wrote: Any chance of a photo? http://www.gull.us/misc/nixie/dlf-front.jpg It's not mine, but it looks the same except that the yellow sticker is on the side of mine rather than the front. Best regards, -Steve -- Steve Byan steveb...@me.com Littleton, MA 01460 ___ 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] looking for data on time code display
Maybe something like a Datum or AstroData. The reverse code switch is for reading tapes backwards. It looks like a modified standard product. It does not appear to interface w/ a tape search controller. At a guess it's mid 1960s to mid 1970s, to go w/ something like an Ampex FR1800 or similar tape machine. Many IRIG recorders could go 240, 120, 60, 30, 15, 7.5, 3.75, 1.875, and 0.9375 inches per second. FWIW, -John On Dec 11, 2011, at 6:18 PM, Jim Palfreyman wrote: Any chance of a photo? http://www.gull.us/misc/nixie/dlf-front.jpg It's not mine, but it looks the same except that the yellow sticker is on the side of mine rather than the front. Best regards, -Steve -- Steve Byan steveb...@me.com Littleton, MA 01460 ___ 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] looking for data on time code display
It was just on the thread a month ago. nematime $15 donation. I have used it and it worked well. On Sun, Dec 11, 2011 at 5:25 PM, J. Forster j...@quikus.com wrote: I think I've seen IRIG Time Code SW for the PC that uses a sound card, but I forget where. The various IRIG formats are well dovumented. And yes, Time Code readers were used with high and low speed searches on IRIG tape recorders. You set Start and Stop points and the tape would Play, Stop, Reverse, Stop, Play as you demuxed/analyzed the data. Typically there were 5 or 12 tracks of analog data and two time code tracks. Sometimes digit was recorded in roughly the same way. -John Fascinating. I also have one of these with slight differences, but it does have a Fort Meade tag. Bought it from a guy on the BoatAnchors list in Atlanta in the dim past. The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104 The rotary switch adds a 160 KHz position. The two switches are marked CODE POLARITY and POWER ON. The rear panel has a 4 pin circular jack labeled AUX and a 24 pin rectangular connector marked PARALLEL. A partly torn tag taped to the top says Made by TRAK, Model ?? 2234/U, SN 517. A plastic envelope contained a DD Form 1348-1A release/receipt document from the Defense Reutilization Marketing Office at Meade. It released 5 of these units worth $1500 each, dated 1-29-98, ship from H98231 (in HTID number above) to SX1213 (marketing office?). Somewhere I'd heard that these units were for locating times on tape recordings of intercepts. The different filter frequencies are for different tape speeds, from high speed search to fine positioning. The code might be IRIG but it could just as easily be something the NSA invented for the purpose. I bought it because I'd visited the NSA museum at Fort Meade and seen the code breaking machines. I didn't find them intimidating at all. The gift shop would sell me a jacket with NSA logos, but I didn't know where I would wear it. There is a certain cachet to having a box that was used by top secret agents to decode radio intercepts. Bill Hawkins P.S. I'd recommend doing some signal tracing from the Input connector. We have no idea what signal levels were used, if it wasn't IRIG. I never found time to do that. -Original Message- From: ed breya Sent: Sunday, December 11, 2011 2:12 PM I looked at your first post again and noticed there were apparently lots of TTL circuitry, so it could be an IRIG code receiver, and you should be able talk to it. If you don't have a source readily available, you may be able to fool it into responding a little to gibberish applied from a modulated signal generator, just to see if it's functional. Ed ___ 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.
Re: [time-nuts] looking for data on time code display
I had hoped the frequencies listed on the controls might trigger some association in someone who's knowledgable about time-codes. 250 Hz doesn't seem to be a legal IRIG time-code frequency, although 1 kHz is. I'd try feeding it with various frequencies as others have suggested and see what happens. It's unlikely to have been used with other time codes such as SMPTE. I have an earlier unit made by Datachron, now defunct, which looks superficially similar but uses DTL logic. Mine is definitely an IRIG decoder and the funny filter frequencies may have been meant for manually shuttling tapes at non standard speeds. After a lot of messing around (a story in itself) I have resurrected mine and use it as a nixie clock, fed with IRIG B generated by a modern micro from the output of a GPS receiver. There's more logic in the $9 AVR chip than the whole IRIG decoder which would have cost thousands when it was new! And while I'm on the subject, anyone got any DTL JK flip flops to spare to keep the old box going? I've had to replace quite a few chips which probably died when the device was fed with higher than specified mains voltage in its early life. The +5V supply was unregulated :-( Morris VK3DOC Melbourne, Australia ___ 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] Looking for data sheet on Reeves Hoffman 101BC
Hi Ed, from archive: [time-nuts] Reeves Hoffman 101BC OCXO marks twotoe.com, Fri, 08 Jun 2007 14:18:57 -0700 Hi All, I have a Reeves Hoffman 101BC precision OCXO. It is a 10 Mhz one. I am trying to GPSD it. However EFC adj pot (10k) only goes to the pin with no reference voltage. Can I still control this ocxo in the same manner as the HP ovens such as the 10544? Mark Karesz 2010/5/29 Ed Troy et...@aeroconsult.com I have an old Reeves Hoffman 101BC 10 MHz OCXO, but I need a data sheet and pin-out description for it. Does anyone have any information? Thanks, Ed ___ 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] Looking for data sheet on Reeves Hoffman 101BC
Hi, Thanks. I saw that. In fact, that is what got me thinking to ask the list. I was hoping someone could point me to an actual data sheet that would show pin-outs and specifications. I thought those would be easy to find on the net, but I can't dig them up anywhere. Ed At 09:28 AM 5/29/2010, K. Szeker wrote: Hi Ed, from archive: [time-nuts] Reeves Hoffman 101BC OCXO marks twotoe.com, Fri, 08 Jun 2007 14:18:57 -0700 Hi All, I have a Reeves Hoffman 101BC precision OCXO. It is a 10 Mhz one. I am trying to GPSD it. However EFC adj pot (10k) only goes to the pin with no reference voltage. Can I still control this ocxo in the same manner as the HP ovens such as the 10544? Mark Karesz 2010/5/29 Ed Troy et...@aeroconsult.com I have an old Reeves Hoffman 101BC 10 MHz OCXO, but I need a data sheet and pin-out description for it. Does anyone have any information? Thanks, Ed ___ 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.
Re: [time-nuts] Looking for data sheet on Reeves Hoffman 101BC
Hi Ed, Yes, on the web is practically noting to find... I get only one info: RH was buyd in 1994 from CTS, hopfely you can get some help from their peoples... Regards K. 2010/5/29 Ed Troy et...@aeroconsult.com Hi, Thanks. I saw that. In fact, that is what got me thinking to ask the list. I was hoping someone could point me to an actual data sheet that would show pin-outs and specifications. I thought those would be easy to find on the net, but I can't dig them up anywhere. Ed At 09:28 AM 5/29/2010, K. Szeker wrote: Hi Ed, from archive: [time-nuts] Reeves Hoffman 101BC OCXO marks twotoe.com, Fri, 08 Jun 2007 14:18:57 -0700 Hi All, I have a Reeves Hoffman 101BC precision OCXO. It is a 10 Mhz one. I am trying to GPSD it. However EFC adj pot (10k) only goes to the pin with no reference voltage. Can I still control this ocxo in the same manner as the HP ovens such as the 10544? Mark Karesz 2010/5/29 Ed Troy et...@aeroconsult.com I have an old Reeves Hoffman 101BC 10 MHz OCXO, but I need a data sheet and pin-out description for it. Does anyone have any information? Thanks, Ed ___ 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. ___ 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] Looking for data sheet on Reeves Hoffman 101BC
I have an old Reeves Hoffman 101BC 10 MHz OCXO, but I need a data sheet and pin-out description for it. Does anyone have any information? Thanks, Ed ___ 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] looking for data on Magellan 10 channel OEM GPS board circa 1994-1998
I'm looking for data on what appears to be a magellan oem GPS reciever which I removed from an older magellan aviation gps with moving map display (unit was circa 1998). The gps module I removed has Magellan systems corp, Copyright 1994 10 channel OEM silkscreened on the top side and a sticker on the bottom which says 23-80019-000 REV. L S/N 004925 right above 20-80011-000 REV. B etched on the board as part of the artwork. Anyone have any idea where I may find enough data on this board to give it new life in another project? Google was unable to find anything and Magellan Support was so abysmnal that I will no just think twice about buying or specifying anything magellan in the future `I would more than likely just refuse to have any part in the use or implimentation. Google had no results and Magellan lack of support dept. was worse. any help you can offer in finding data and using this board in much appreciated. Thanks, Eric ___ 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] Looking for data
Greetings, A friend at work has the following recordings available over the leap second, and will post them if there's interest. DCF77 (.de) WWV, WWVB (.us) MSF (.uk) BPM (.ch) This station went to carrier at leap second. oops. He's interested in the following: CHU (.ca) WWVH(.us) JJY (.jp) TDF (.fr) HBC (swiss) Warner ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Looking for data
I have CHU at http://www.febo.com/time-freq/leapsecond-2005 (about halfway down the page). John Warner Losh said the following on 01/02/2006 12:29 PM: Greetings, A friend at work has the following recordings available over the leap second, and will post them if there's interest. DCF77 (.de) WWV, WWVB (.us) MSF (.uk) BPM (.ch) This station went to carrier at leap second. oops. He's interested in the following: CHU (.ca) WWVH(.us) JJY (.jp) TDF (.fr) HBC (swiss) Warner ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Looking for data
In message [EMAIL PROTECTED], Warner Losh writes: Greetings, A friend at work has the following recordings available over the leap second, and will post them if there's interest. DCF77 (.de) WWV, WWVB (.us) MSF (.uk) BPM (.ch) This station went to carrier at leap second. oops. Isn't this China ? .cn ? He's interested in the following: TDF (.fr) HBC (swiss) I have 400 GB of VLF/LF data, sampled a 5 MSPS * 12 bits directly from my loop antenna. It should contain not only HBC and TDF, but also DCF77, Rugby, LORAN-C but also anything else up to around 300 kHz (low-pass filter in my antenna) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
