[time-nuts] information about the Austron Synchronous Filter 2090A

2017-02-04 Thread Ruslan Nabioullin
Hi, any ideas on what the Austron Synchronous Filter 2090A is for? I couldn't find it in the '88 catalog. I recall seeing some hits for it in old unclassified DoD R publications in the past, wherein it was used as part of an experimental LORAN reception setup. -Ruslan

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Ruslan Nabioullin
On 02/03/2017 10:02 AM, paul swed wrote: Ruslan NH will be easy to pick it up. The core frequency is 3 Cesiums in a cluster. As for time transfer it can but its really a pain in the backend and that information is indeed in the data channel. So make us jealous with your CS and RBs. :-) I am down

Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102

2017-02-04 Thread Hal Murray
b...@baylorhill.com said: > Where does pin three (P1) connect. I may have trashed both units. Are > schematics available. I don't know of any schematics. I would take it apart and see if anything is connected to any of the other pins on those connectors. Or measure the resistance from the

[time-nuts] Power Problems Lucent KS-24361, L101 & L102

2017-02-04 Thread Roland Wm "Buzz" Ude
I,m brand new to this forum. I need your help. While powering up a KS-24361 set of units for the first time, my power plug for P1 was wired incorrectly!. Pin one (P1) was plus 24 VDC; Pin three (P1) minus 24 VDC--this should have been pin two Tried same connection on both L101 and L102, no

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Bob Camp
Hi The ground wave (hopefully) travels a shorter path. The gotcha comes in when the phase shift is 180 degrees and you start nulling things out. That will play havoc on the “stuff” that works out the envelope shape for detecting the third pulse. Again, I didn’t design a from scratch receiver

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Hal Murray
kb...@n1k.org said: > If I had not already calibrated the local standard against a nearby chain … > no way to figure out which data was correct. Isn't the ground wave shorter and hence gets there sooner? Couldn't you use that to calibrate an uncalibrated local standard? -- These are my

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Bob Camp
Hi The Russian system runs an incompatible pulse format. A “normal” Loran receiver pretty much pukes when you try to tune to the Russian chains. It also is a bit unclear just how stable their system is timing wise. For timing you *need* ground wave. Anything that is more than 1,000 miles away

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Poul-Henning Kamp
In message , Ruslan Nabioullin writes: >On 02/03/2017 09:53 AM, Bob Camp wrote: >> You can also pick up the Russian system >> that runs on the same frequency. "Chayka" on GRI 8000 is almost useless, I'm told this is so even in Russia,

Re: [time-nuts] Wildwood NJ ELoran

2017-02-04 Thread Bill Riches
-Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bill Riches Sent: Friday, February 3, 2017 10:02 PM To: 'Discussion of precise time and frequency measurement' Subject: [time-nuts] Wildwood NJ ELoran Here is a dropbox link to

Re: [time-nuts] eLoran test 6 Feb for almost 2 months

2017-02-04 Thread Ruslan Nabioullin
On 02/03/2017 09:53 AM, Bob Camp wrote: With reasonable gear, you can pick up the European Loran chains in the US on a regular basis. You can also pick up the Russian system that runs on the same frequency. The gotcha there is that you are looking at “skywave” rather than “ground wave” signals