Re: [time-nuts] Z3801A and Z38XX Issues
One more suggestion... I keep a stash of DB9-TO-RJ45 and DB25-TO-RJ45 adapters around. These come unassembled. I use these on all my Z3801A's, Z3815A's, and pretty much all other serial gear. You just put together the adapter you need by placing the pins appropriately on each adapter. With the right tool you can disassemble them and reuse them, too. On 9/17/2017 at 1:31 AM, "Artek Manuals" wrote:You need the null modem adapter which reverses the TX and RX lines on one end of the cable. Also not all USB to Serial adapters work.. I bought an old laptop with a real serial port at a junk computer shop for not much more than USB adapter to solve the RS-232 problem Dave On 9/16/2017 6:48 PM, Scott McGrath wrote: > Connect to a terminal emulator and IDQ it you will either see garbage in which case serial config is wrong and you need to try a new set of values > > Or using a breakout box connect a scope to the txd and rxd lines and compare pulse widths > > Content by Scott > Typos by Siri > >> On Sep 16, 2017, at 4:22 PM, Bob kb8tq wrote: >> >> Hi >> >> The gotcha is that the 3801 is an “ask for it / get it” protocol. If you don’t >> get the query formatted correctly, there will be no data coming back. It’s not >> like some other GPSDO’s that just yack all the time. >> >> Bob >> >>> On Sep 16, 2017, at 9:27 AM, Brad Stockdale wrote: >>> >>> From what I recall, the manual was accurate on the baud, stop bits, >>> parity, etc. Just a few thoughts Make sure that the serial port is >>> working as expected... Do a loop back test if possible. Are you using >>> a USB to Serial adapter? Many of them have some weird quirks. IMHO, >>> FTDI based adapters work better than others. Forego using the Z38XX. >>> Try using a plain terminal app and see if you get any weird characters >>> echo'd back instead of expected responses. Etc... There are a lot of >>> possible causes when a serial connection isn't working right. >>> >>> On 9/16/2017 at 12:26 AM, "Richard Solomon" wrote:Not according to >>> the manual, but then that could be my problem !! >>> 73, Dick, W1KSZ >>> Sent from Outlook >>> >>> From: time-nuts on behalf of Bill Hawkins >>> Sent: Sunday, September 10, 2017 8:16:17 PM >>> To: 'Discussion of precise time and frequency measurement' >>> Subject: Re: [time-nuts] Z3801A and Z38XX Issues >>> >>> Shouldn't that be 8 data bits? >>> >>> Bill Hawkins >>> >>> -Original Message- >>> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of >>> Richard >>> Solomon >>> Sent: Saturday, September 09, 2017 4:24 PM >>> >>> I downloaded and installed Z38XX, configured both the Port and Device >>> to >>> the recommended parameters: >>> Data Rate: 19,200 >>> >>> Parity: Odd >>> >>> Data Bits: 7 >>> ___ >>> 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 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. > -- Dave manu...@artekmanuals.com www.ArtekManuals.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ___ 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] Z3801A and Z38XX Issues
>From what I recall, the manual was accurate on the baud, stop bits, parity, etc. Just a few thoughts Make sure that the serial port is working as expected... Do a loop back test if possible. Are you using a USB to Serial adapter? Many of them have some weird quirks. IMHO, FTDI based adapters work better than others. Forego using the Z38XX. Try using a plain terminal app and see if you get any weird characters echo'd back instead of expected responses. Etc... There are a lot of possible causes when a serial connection isn't working right. On 9/16/2017 at 12:26 AM, "Richard Solomon" wrote:Not according to the manual, but then that could be my problem !! 73, Dick, W1KSZ Sent from Outlook From: time-nuts on behalf of Bill Hawkins Sent: Sunday, September 10, 2017 8:16:17 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Z3801A and Z38XX Issues Shouldn't that be 8 data bits? Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Richard Solomon Sent: Saturday, September 09, 2017 4:24 PM I downloaded and installed Z38XX, configured both the Port and Device to the recommended parameters: Data Rate: 19,200 Parity: Odd Data Bits: 7 ___ 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] Z3815A Unofficial Docs
Hello all, After some time and some twists and turns in life, I've found time to work with my GPSDO's again. I've added two Z3815A's to my collection, after wanting to do so for a number of years. After reading through the listserv's historical posts to re-acquaint myself with the units (and the hobby in general), I've found references to an unofficial documentation CD, from Kit S. I've tried emailing Kit, but have received bounces. Was wondering if anyone knows of a new email address. Seems like bytecan may have had some issues and is no longer providing services. Just trying to track down whatever information I can on the Z3815A's, above and beyond the basic connections (which I found by sorting through a half dozen other posts on the list; thank goodness for the archives). I understand that the command set is very similar to the SCPI command set used with the Z3801A's. Just more curious about what other information is out there on these. Thanks! ___ 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] FS: HP Z3801A
All, I am to the point where I am interested in selling one of my HP Z3801A GPSDO's. In the past when I mentioned possibly selling one or two of my Z3801A's, I was asked to offer them to the list first before I put them on eBay or anything of the sort. I'd like to see it go to someone who is a time nut as well. I am selling the unit alone, without power supply or antenna, thus anyone interested would need to supply a -48VDC PS and a GPS antenna. I use Motorola GPS antennas with great success. I've also used puck style antennas with success as well. If anyone is interested in picking up a Z3801A, please email me and we will discuss cost and arrangements and such. I'm not looking to really make anything more than my original purchase cost out of it. My email address is b...@shinji.net. Thank you, Brad Stockdale ___ 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] eBay FE-5680A
All, I am getting ready to order a few FE-5680A's from eBay and I noticed that all of the sellers are from Asia. Is this typically the case or are there some US based sellers? The reason I ask is because I'm always leery of buying things that ship from Asia. I've ordered stuff twice from other sellers in Asia (Hong Kong in one case and China in another). Ive only got stuck a couple times on eBay and both times it was with my deals with ppl in Asia. So, I guess this is my question: are the Asia based sellers on eBay the "normal suspects" and should I be concerned that I won't get the units I order? Thanks, Brad Stockdale ___ 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] Manuals or info on Lucent RTFG's
All, Thank you all for the information on what to look for with FE-5680A's and related standards. I've been watching eBay the past few days and I think I'll be able to get two or three in the next couple days. I saw a set of ten for $349.00 which looked like a good deal... But I decided that maybe I should just get a few, and save the rest of the money to put towards another frequency standard that I'm interested in... Specifically, I've always wanted to get a set of the Lucent RFTG XO and Rb units... That's what this email is about. I've been looking at the Lucent units for a few years now, ever since I got into GPSDO's. My question is: Are there any reference or repair manuals out there for the Lucent RFTG units? I'm not jumping immediately to buy a pair, but it is on my top three list of units I want to get next (1) FE-5680A's, 2) HP Z3815A's, 3) Lucent RFTG-m-XO/Rb). I finally dug up some non-battery-backed PSU's for my Z3801A's, so I may be getting rid of one or two of those to help me get another one of the standards I want to work with. I'm keeping two out of four of my Z3801A's for sure, and this weekend I'm going to power up all four of the units to make sure they're all still operating within spec and such. Thanks to all on this list. I've been a lurker for years, only sporadically surfacing. But, the amount of knowledge contained on the time-nuts list is amazing. I've learned so much by just watching the list. Thanks, Brad Stockdale ___ 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] Things to look for when buying a few FE-5680A's?
Chris, Thank you for the input on the subject. I'll keep my eyes open for the two different kinds. In all honesty, I probably don't need to alter the frequency... I just like the ability to interrogate the unit for other values such as reading the ADC's and health status bits. I've seen other threads about undocumented commands and values, and that sort of stuff kind of intrigues me. Do you know of any other reference manuals for these units? I found one PDF that seems to cover the operation and use of the modules pretty well. I was curious if there were any other docs out there. I know that there's an FAQ site for the units, and I've been reading over that site. Good info. I'll keep my eyes open for the two different kinds. Thank you, Brad Stockdale On 1/22/2012 12:49 PM, Chris Albertson wrote: The current batch of (about) $40 units are different from what was available a year ago. These new ones require 5V DC input in addition to 15V and can only be programmed via RS232 a few Hz away from 10MHz. So they are only good for use as a 10MHz reference "Option 2" in the book refers to a different type FE5380 that can be programed over a very wide range of several MHz. I think these are still being sold on eBay but not for $40. They seem to be over $100. Which is which and how to tell? Just look at the price. On Sat, Jan 21, 2012 at 9:59 PM, Brad Stockdale wrote: All, I've been on the sidelines of being a time nut for a while now and I'm working on getting back into things. Before I drifted away from my hobbies, I remember the FE-5680's being around, but I didn't know much about them and was more interested in GPSDO's. I think I'd like to help kickstart my interest in the area again by picking up a few FE-5680A's from eBay. So, I was wondering if there's any certain things I should look for when buying some... It looks like there's a pretty consistent supply right now on eBay... Are there certain sellers that people would recommend? I noticed that Option 2 is the RS-232C stuff. Do most on eBay have this option? Anything in particular I should watch out for? Thanks, Brad ___ 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] Things to look for when buying a few FE-5680A's?
All, I've been on the sidelines of being a time nut for a while now and I'm working on getting back into things. Before I drifted away from my hobbies, I remember the FE-5680's being around, but I didn't know much about them and was more interested in GPSDO's. I think I'd like to help kickstart my interest in the area again by picking up a few FE-5680A's from eBay. So, I was wondering if there's any certain things I should look for when buying some... It looks like there's a pretty consistent supply right now on eBay... Are there certain sellers that people would recommend? I noticed that Option 2 is the RS-232C stuff. Do most on eBay have this option? Anything in particular I should watch out for? Thanks, Brad ___ 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] Z3801A's
Hello all, A few years ago, I bought several HP Z3801A's. When they all arrived, I added the internal jumpers for selecting between RS232 and RS422, and connected them all to antennas and a PC to verify functionality of the units as a whole and their timekeeping abilities. They all worked perfect and fell well within the normal ranges of operation. Since then, I've had a lot of drama in my life. I've changed jobs a couple times, moved a couple times, etc etc. Well, my life is starting to calm down some and I'm trying to get back into my hobbies, one of which is being a time nut. I'm thinking about tracking down a couple Z3815A's and possibly other pieces of hardware to add to my collection. To fund buying the other equipment, I was thinking about getting rid of a couple of my Z3801A's. I usually don't like to get rid of any piece of equipment, but if I was getting rid of one GPSDO so that I can get other related equipment, I don't think I'd feel too much remorse. My question is this... What is the current market value on working and tested Z3801A's? And for that matter, what is the usual market value on Z3815A's? Trying to see if I can make this work somehow. Thank you, Brad Stockdale ___ 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] Odetics 325/425 owners, rejoice!
Bruce, I just wanted to thank you for the interesting information. I grabbed a few other electronics related files that I saw on your FTP site. Much appreciated! Regards, Brad At 10:31 PM 12/2/2008, you wrote: >Fellow clock-tickers, > > > The manual may be found on the Blue Feather FTP archive. > > ftp.bluefeathertech.com > > Sign in as user ftp and the password can be anything you > want (though I prefer an E-mail for logging purposes). ___ 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] Heathkit GC-1000
Hello all, Back 'in the day', when I was about 14 or 15, I went to a local computer/technology meeting... This was back around 94 or 95, and there was an underground group of computer users in the area that got together once a month and traded knowledge, etc... After the meeting, I was taken to a friend-of-a-friends house. This guy, named Doc, was about 60 years old or so. Lived alone (except for his cat and dog)... His 'living room' was nothing short of a combination of a datacenter, hamfest, and video editing suite. Three or four Commodore Amiga's, a betacam editing system, a huge front projection TV. Walls lined with random equipment. His kitchen table was stacked with computers of various vintages... In any case, on his mantle sat a Heathkit GC-1000 quietly ticking away, sync'd to one of the WWV stations... This was my earliest contact with 'accurate time', and is what prompted my fascination with it. That little 1 PPS LED made me fall in love... For years I had no clue what that clock was. Years later, I finally identified the make/model. I looked around online randomly over the past decade and never found one... Recently I added 'Heathkit GC-1000' to my eBay saved searches... Well, today I got an email that someone listed one. It appears to be in good working order, complete with manuals. I bid on it, but was promptly outbid by the original bidder. I didn't figure I would get it for what I offered anyway, but I figured I would try. No harm in that, right? Anyway, I digress. I apologize for the trip down memory lane that I subjected you all to... I'll get to my questions... 1) How prevelant are Heathkit GC-1000's? Are they a common find, or are they fairly rare? 2) What would be considered a reasonable price for one in working order? Thanks, Brad ___ 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] WWV / WWVH / WWVB
At 02:24 PM 11/20/2008, you wrote: >Are you open to vacuum tube equipment? Surely. Tubes are another interest of mine, but I only really deal with audio stuff. One of my ham friends tried to ease my fear of RF equipment by telling me that RF gear was basically just audio gear with chokes/coils and tuned circuits. Didn't help aleviate my hesitation of getting into it. Haha. >I have a set with a 2" scope tube that let me see the phase shift >between WWV and WWVH when propagation conditions brought them both >to Minneapolis. Also a Specific Products WWV receiver. Do you happen to have a make/model of this neat sounding receiver with the scope built in? Thanks, Brad ___ 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] WWV / WWVH / WWVB
At 01:55 PM 11/20/2008, you wrote: >I bought a nice little module from digi-key to handle this. >561-1014-ND, under $11 including the ferrite antenna. Interesting little module. Cheap too! Looking over the datasheet right now. Thanks for the pointer. Brad ___ 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] WWV / WWVH / WWVB
At 03:37 PM 11/20/2008, you wrote: >I just checked on eBay right now and didn't see any available right >this second, but I will put in a saved search for them so I can get >email alerts... I take it back... There are a few. Sorry about that! Brad ___ 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] WWV / WWVH / WWVB
Oh my... The HP 3586 looks like a gorgeous piece of equipment. It'd look very impressive in my (hopefully) growing rack of time/frequency gear... I just checked on eBay right now and didn't see any available right this second, but I will put in a saved search for them so I can get email alerts... Do you know of any good (reasonably priced) used equipment dealers that I should also be looking at for HP test equipment? I know there's shops that specialize in used test gear, but I just don't know their addresses... I'll google around right now and see what I can come up with, but if anyone has any suggestions that they have delt with before and been satisfied, I'd like to hear. Thanks for the great idea! I hope I can track one of these down sooner or later. Regards, Brad At 01:55 PM 11/20/2008, you wrote: >Brad Stockdale wrote: >[ ... ] > > Anyway, on to the reason for this post... I'd like to get some > > receivers so I can HEAR and USE the WWVB, WWV, and WWVH signals... I > > know that HEARING them may not be a 'normal' request, but I just > > would like to monitor the audio as well as being able to decode > the signals... >broadcast ranges. > >[ ... ] > > Can anyone suggest a kit, or project listed online with > > schematics and parts lists, or I guess even reasonably priced > commercial units? > > > > If I can't get radios that have built in decoders for these > > stations, I'd be happy just receiving their audio and then trying to > > build my own decoder using a PIC or something... > >If you don't mind a big, heavy box, the HP 3586[A,B,C] selective >voltmeters are absolutely wonderful tools for any sort of LF/HF >measurement. They tune from 20 Hz to 32 MHz and have narrow 20 and 400 >Hz filter bandwidths, as well as a voice-bandwidth filter (the width >depends on the model and option). They read amplitude to 0.01 dB and >can count a received carrier to 0.1 Hz frequency resolution. > >They have a speaker and line-level audio output, but no decoder. They >also have a GPIB connector, so you can use a computer to tune and read >frequency and amplitude. > >The "C" model is the best for lab use, because it has 50/75/600 ohm >input options, and uses standard BNC and binding post input connectors. > The A and B models were designed for telco use and have slightly weird >input impedances and connectors, but nothing to stop them from still >being very useful. > >They sometimes go on eBay for <$200, which is a steal in my book. They >weigh about 50 pounds, though, so aren't exactly portable. > >John > >___ >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. > >__ Information from ESET NOD32 Antivirus, version of virus >signature database 3628 (20081120) __ > >The message was checked by ESET NOD32 Antivirus. > >http://www.eset.com ___ 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] WWV / WWVH / WWVB
Hello all, Thank you to everyone that has helped (and some that continue to help) me with my GPSDO equipment post... I've got a few leads out there and hopefully I'll be able to get ahold of some of these units soon... I really am looking forward to getting to work with some other GPSDO's. Anyway, on to the reason for this post... I'd like to get some receivers so I can HEAR and USE the WWVB, WWV, and WWVH signals... I know that HEARING them may not be a 'normal' request, but I just would like to monitor the audio as well as being able to decode the signals... I guess the first thing to take care of is receiving the signals. Can anyone recommend decent receivers for these stations? I guess the list of frequencies would be: o WWVB = 60 KHz o WWV = 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, or 20 MHz o WWVH = 2.5 MHz, 5 MHz, 10 MHz, or 15 MHz Hmm, I just noticed that WWV and WWVH overlap... How in the heck do you differentiate between the two stations if they broadcast on all the same channels? Anyway, I wouldn't mind a kit type of project that would let me receive these signals... Maybe I'll check out Ramsey Electronics, Rainbow Kits, Velleman, et al. Surely one of them has kits for these broadcast ranges. Can anyone suggest a kit, or project listed online with schematics and parts lists, or I guess even reasonably priced commercial units? If I can't get radios that have built in decoders for these stations, I'd be happy just receiving their audio and then trying to build my own decoder using a PIC or something... Thanks for any advice. Brad ___ 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] Where to find surplus telecom standards
Good idea! I've used eBay on and off since 1999, and never even knew I was able to search closed auctions! Ya learn something new every day! Thank you for the idea. I did indeed find some closed Z3801 and related auctions. My, the price has gone up on them. Thanks, Brad At 02:15 PM 11/18/2008, you wrote: >Use the Advanced Search to check Closed Sales. You will be >pleasantly surprised. They were a better investment than the >Stock Market !! > >73, Dick, W1KSZ > >-Original Message----- > >From: Brad Stockdale <[EMAIL PROTECTED]> > >Sent: Nov 18, 2008 11:29 AM > >To: Discussion of precise time and frequency measurement > > >Subject: Re: [time-nuts] Where to find surplus telecom standards > > > >Hello, > > > >Kinda bad form to reply to your own threads right away, but here goes... > > > >I just checked on eBay right now and there are some Lucent units > >up for auction. Of course, I don't have money right this second, but > >now I know that the lucent units seem to be more prevalant than the > >HP ones... I'll setup some saved searches so I can hopefully grab a > >few more of these standards to play with... > > > >On a slightly different subject, albeit somewhat related... Does > >anyone know what HP Z3801A's are worth nowadays? I remember when they > >first came on the market, they were around $250, then up to about > >$400 or so when supplies got scarce. Not sure what happened after > >that... Just kinda curious if I could make some extra money by > >selling a couple of my Z3801's and using the profits to buy some > >other units to 'play' with... > > > >Thanks, > >Brad > > > > > >___ > >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. > >__ Information from ESET NOD32 Antivirus, version of virus >signature database 3622 (20081118) __ > >The message was checked by ESET NOD32 Antivirus. > >http://www.eset.com ___ 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] Where to find surplus telecom standards
Hello, Kinda bad form to reply to your own threads right away, but here goes... I just checked on eBay right now and there are some Lucent units up for auction. Of course, I don't have money right this second, but now I know that the lucent units seem to be more prevalant than the HP ones... I'll setup some saved searches so I can hopefully grab a few more of these standards to play with... On a slightly different subject, albeit somewhat related... Does anyone know what HP Z3801A's are worth nowadays? I remember when they first came on the market, they were around $250, then up to about $400 or so when supplies got scarce. Not sure what happened after that... Just kinda curious if I could make some extra money by selling a couple of my Z3801's and using the profits to buy some other units to 'play' with... Thanks, Brad ___ 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] Where to find surplus telecom standards
Hello all, I'm somewhat new to the list (long time lurker, first time poster). I guess I should introduce myself. My name is Brad. I live in Pennsylvania. Always been interested in electronics of various types (specifically lasers, high voltage, computer interfacing, and PIC uC's). Long ago I figured out that for some reason, I have a fascination with accurate time. I can't explain it, really, since I'm notouriously late and never plan things out, but yet I love to have very accurate time... Lol... In any case, back when the market was flooded with HP Z3801's, I snatched up four of them, along with some mating antenna's. I've ran a couple of them for several years, and have used them for my NTP server. I've built a few PIC based clocks that utilize my 'house standard' outputs from one of my Z3801's as its reference. In any case, I am interested in finding some other surplus telecom type standards... Specifically, units such as: o HP Z3815A o HP Z3816A o Lucent RFG-RB o Lucent RFG-XO Where can us time nuts find such units? I'm sure that if I watched eBay long enough, I might stumble across them, but thus far, I haven't been successful... Even Z3801A's seem to be few and far between now... Also, what are reasonable prices for the above type equipment? If anyone has any leads on where I should be watching for these, please let me know... I'd like to get a few more standards to experiment with. Thank you, Brad ___ 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.