Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-04 Thread EWKehren
Good Morning Angus Let me start out by saying the FE5680A project was intended for time nuts and the unit will not be part of our bench, so the work on it is limited. As far as Rb's are concerned our focus is on FRK and HP5065. Looking back I would most likely not suggested it, had I known

[time-nuts] Interesting frequency standard project

2014-07-04 Thread Collins, Graham
I am sure there are others on list who follow Elektor Magazine and even perhaps their forums but there are likely many that do not. I stumbled across this interesting frequency standard project and thought others might also be interested:

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-04 Thread Bob Camp
Hi There is a bunch of stuff on the Wentzel site about their double wall mini-test chambers. It’s probably the best approach to the gradient issue. You still have a gradient around the inner chamber / box, but it’s consistent. You eliminate the coupling of the gradient to the ambient

[time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

2014-07-04 Thread Lizeth Norman
Hi all! My TS 2100 reports gps engine busy all the time. Looking for the Ace III receiver to fix it. Thanks, Norm n3ykf ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-04 Thread Scott Newell
At 07:23 AM 7/4/2014, Bob Camp wrote: There is a bunch of stuff on the Wentzel site about their double wall mini-test chambers. It's probably the best approach to the gradient issue. You still have a gradient around the inner chamber / box, but it's consistent. You eliminate the coupling of

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-04 Thread Bob Camp
Hi Yes, that’s one of the papers that shows their little chamber. I believe it’s mentioned in a couple of other places. Die cast boxes work pretty well for the enclosures. If you want to zero the gradient in the inner enclosure, put a small fan in there. That adds it’s own issues so it’s

[time-nuts] Introduction and info about a Lucent RFTG

2014-07-04 Thread Denver
Hi all, My name is Denver I am currently a freshman in college and the time bug has struck me. I recently acquired a Lucent RFTG on ebay to have a time standard for my lab(and yes already realize its 15MHz output but may be able to change that and or just use the 10MHz test point from the

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread paul swed
An interesting article much like one Bert sent me circa 1989 quite recently. The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently some stations are quite good. I

Re: [time-nuts] Introduction and info about a Lucent RFTG

2014-07-04 Thread paul swed
Denver yes indeed they do a funny dance to take the 10 Mhz and get to 15. So you are rught unless you need 15 tapping the 10 and simply filtering and buffering is a very fine way to go. There is a power amp on the output of the 15 Mhz as I recall that will work fine at 10. That can then drive a

[time-nuts] WWVB remodulator update Sent twice but never made it through XX More

2014-07-04 Thread paul swed
Happy 4th of July on this Hurricane soaked day to any in the US. I did send the document set out twice this week and I thought it might get through with time-nuts blessing. It didn't. So will have to assemble an email with those that requested the documentation and send it directly to you all.

[time-nuts] WWVB remodulator update...

2014-07-04 Thread Burt Weiner
Paul, Me too also.  I'd like a copy. Burt, K6OQK From: paul swed paulsw...@gmail.com To: Time-nuts time-nuts@febo.com Subject: [time-nuts] WWVB remodulator update Sent twice but never made Happy 4th of July on this Hurricane soaked day to any in the US. I did send the document set out twice

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Hal Murray
paulsw...@gmail.com said: The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently some stations are quite good. I think I have a list some place have to re-look.

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Graham
You have to log in to see all the files for the project. I am not a member so I couldn't log in. Seems it is a pay to be a member sort of thing but joining as a member gets you a subscription too. Interesting business model. I have been a fan of Elektor for as long as I can remember and I

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Alexander Pummer
there was an article in the January 2012issue of the elektor DCF77 locked reference, the DCF77 has very similar modulation format as the new modultion format of the WWVB 73 KJ6UHN Alex On 7/4/2014 2:21 PM, paul swed wrote: An interesting article much like one Bert sent me circa 1989 quite

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Alexander Pummer
for an AM station is strait forward at first use a narrow filter to make sure that you have just one station and feed the filter out put into a limiter the output of the limiter will be the carrier. 73 KJ6UHN Alex On 7/4/2014 3:27 PM, Hal Murray wrote: paulsw...@gmail.com said: The key to

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Brian Lloyd
On Fri, Jul 4, 2014 at 5:27 PM, Hal Murray hmur...@megapathdsl.net wrote: paulsw...@gmail.com said: The key to these systems is that the transmitters have very good references. In the US at least we have no requirement for that level of stability on the MW broadcasts. Though evidently

Re: [time-nuts] WWVB remodulator update Sent twice but never made it through XX More

2014-07-04 Thread Ed Palmer
Put it on one of the free filesharing sites and post the link. I've used Mediafire.com for that in the past. Ed On 7/4/2014 3:30 PM, paul swed wrote: Happy 4th of July on this Hurricane soaked day to any in the US. I did send the document set out twice this week and I thought it might get

Re: [time-nuts] WWVB remodulator update Sent twice but never made it through ...

2014-07-04 Thread GandalfG8
Hi Paul Although I can't see any evidence of your attachment when I check the archives, I thought I'd received a copy with your messages that were forwarded from the list on both occasions you sent it, unless what you're referring to now is a different file? What I received both times as

Re: [time-nuts] WWVB remodulator update Sent twice but never made itthrough XX More

2014-07-04 Thread DaveH
Hi Paul I received your email with a 243KB attachment on 07/01 at 14:10 It go through to me anyway (and looks like a very elegant solution!) Dave -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Friday, July 04,

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Robert LaJeunesse
Details of the DCF77 project, including source code, can be seen without an Elektor subscription / membership. The article's author has specifics posted at http://www.marvellconsultants.com/DCF Bob LaJeunesse  From: Alexander Pummer alex...@ieee.org To:

Re: [time-nuts] Introduction and info about a Lucent RFTG

2014-07-04 Thread Rex
Several years ago there were a number of these showing up pretty cheap on eBay, so I bought one. As I recall there were a couple of similar versions with some differences so take this recollection with a grain of salt. I did some tracing of the internals on the one I had and found the

Re: [time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

2014-07-04 Thread Dale J. Robertson
It's unclear whether you already have an aceIII installed and believe it needs to be replaced, or, your 2100 does not yet have a GPS receiver and you want to do the conversion. A good link describing one variation of the 'always busy gps' problem is

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
The best way to measure the frequency of an AM station is to first pass it through a Crystal filter to strip off the modulation sidebands. After that limiting is usually not necessary. You can do that in either TRF mode, or in the IF of a superhet with a synthesized local oscillator.

Re: [time-nuts] WWVB remodulator update Sent twice but never madeit through ...

2014-07-04 Thread Max Robinson
Yes, I also have that one. It came to us through a link. I think the owner of this list has it set to reject attachments. Regards. Max. K 4 O DS. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Woodworking site

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
That's an interesting looking PC board but the receiver schematic link is dead. The front page keeps coming back up. I'm going to bookmark the page anyway with the hope that he will fix the link in time. Regards. Max. K 4 O DS. - Original Message - From: Robert LaJeunesse

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Max Robinson
Never mind. It wouldn't work in Fire Fox but it did work in MS IE8. Regards. Max. K 4 O DS. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Woodworking site

Re: [time-nuts] Wanted: Ace III gps receiver for Datum TS 2100

2014-07-04 Thread Lizeth Norman
Sorry if I was muddy. The TS 2100 had an ace gps receiver installed. The antenna and tracking lights went out a week ago. Just got round to checking what was the matter. The symptom is that the gps engine always reports busy when checked via the front panel interface. One of the list members

Re: [time-nuts] Interesting frequency standard project

2014-07-04 Thread Arnold Tibus
I don't have any problem to get the schematic, everything is accessable. regards Arnold, DK2WT Am 05.07.2014 05:52, schrieb Max Robinson: That's an interesting looking PC board but the receiver schematic link is dead. The front page keeps coming back up. I'm going to bookmark the page