Indeed according to the tracor 900 manual you could get to -11th in 24
hours best case. Further comment was NAA is CS as of 1976! The 900 indeed
has a semi simple op amp adapter thing that reduces or gets rid of the MSK.
Though I have read the description and details it makes no sense as to how
it
NAA actually is above and below 24KHz. That said I suspect that the system
simply averages the MSK out of the loop by the filter TC of the PLL.
There are numbers of propagation papers on NAA.
Paul
WB8TSL
On Fri, Aug 15, 2014 at 3:09 PM, paul swed paulsw...@gmail.com wrote:
Indeed according to
On Fri, Aug 15, 2014 at 03:09:23PM -0400, paul swed wrote:
I had discounted it because of the lack of info and totally unclear how to
get rid of the FSK. MSK is FSK just with a very narrow shift. Also the
effects of the fsk on the carrier. Hmmm glad I am typing this.
It may be that the mark
www.glkinst.com/test-equipment/manuals/Tracor*900A*.pdf
On Fri, Aug 15, 2014 at 4:49 PM, paul swed paulsw...@gmail.com wrote:
David
Yes I have seen various comments and documents describing MSK that way.
But have to say the tracor 900 does not use that method to establish a
reference.
Its
David
Yes I have seen various comments and documents describing MSK that way.
But have to say the tracor 900 does not use that method to establish a
reference.
Its a few opamps perhaps one side acting as a phase delay summing with the
original and hitting a BPF. all of that running at 100Hz center
Yes I can see on page 2 of the pdf thats the trick. Its a non costas loop
trick.
The action of the MSK card doubles the phase shift.
So it is the classic double the frequency stateless carrier recovery. that
may drop phase due to noise.
Regards
Paul
WB8TSL
On Fri, Aug 15, 2014 at 4:52 PM,
On Fri, Aug 15, 2014 at 04:56:01PM -0400, paul swed wrote:
Yes I can see on page 2 of the pdf thats the trick. Its a non costas loop
trick.
The action of the MSK card doubles the phase shift.
So it is the classic double the frequency stateless carrier recovery. that
may drop phase due to
On Fri, Aug 15, 2014 at 04:56:01PM -0400, paul swed wrote:
Yes I can see on page 2 of the pdf thats the trick. Its a non costas loop
trick.
That PDF is returning a 404 for me at the moment...
--
Dave Emery N1PRE/AE, d...@dieconsulting.com DIE Consulting, Weston, Mass
02493
An
Not sure whats up with the link when I click it I get the download. Its a
2.5MB file
http://www.glkinst.com/test-equipment/manuals/Tracor900A.pdf.
Try his main page http://www.glkinst.com
I did see the info there also.
Browsers we luv'em.
Regards
Paul.
WB8TSL
On Fri, Aug 15, 2014 at 6:20 PM,
URL ok from here
-pete
On Fri, Aug 15, 2014 at 3:25 PM, paul swed paulsw...@gmail.com wrote:
Not sure whats up with the link when I click it I get the download. Its a
2.5MB file
http://www.glkinst.com/test-equipment/manuals/Tracor900A.pdf.
Try his main page http://www.glkinst.com
I did
On Fri, Aug 15, 2014 at 03:39:07PM -0700, Pete Lancashire wrote:
URL ok from here
The text of the original post had *s in the URL... which
didn't work so well...
Partly pilot error here...
Works OK without the *s
-pete
--
Dave Emery N1PRE/AE,
Whats interesting is I had never heard of the 900 till I started looking at
NAA and msk.
Regards
Paul.
On Fri, Aug 15, 2014 at 6:43 PM, David I. Emery d...@dieconsulting.com
wrote:
On Fri, Aug 15, 2014 at 03:39:07PM -0700, Pete Lancashire wrote:
URL ok from here
The text of the
Oh Ebay has one for sale for the person that just needs one. Todays buy now
$1693 plus shipping.
There you go a deal a day. I think not.
regards
Paul
WB8TSL
On Fri, Aug 15, 2014 at 7:48 PM, paul swed paulsw...@gmail.com wrote:
Whats interesting is I had never heard of the 900 till I started
Not sure whats up with the link when I click it I get the download. Its a
2.5MB file
http://www.glkinst.com/test-equipment/manuals/Tracor900A.pdf.
The problem with the above link is the period is included as part of the
link when you click on it. It will work without the period.
-Arthur
so much for copy and paste.
Thanks
On Fri, Aug 15, 2014 at 7:52 PM, Arthur Dent golgarfrinc...@gmail.com
wrote:
Not sure whats up with the link when I click it I get the download. Its a
2.5MB file
http://www.glkinst.com/test-equipment/manuals/Tracor900A.pdf.
The problem with the above
Did check NAA and its banging into Boston. Had to put 40 db anttenuator
inline to make it reasonable. Using the wwvb antenna. Most likely would do
just fine with 6 ft of wire. Ok only had 4 ft of wire and its there. Could
really use 10-12ft. :-) So maybe my fillings won't pick it up.
Regards
Paul.
Hello !
Please count me in also for two sets of TM 500 extenders and one HP 5370
board set.
Please contact me off list at : va2hdd (at) amsat.org when you can, no
rush, I have one question about this project.
Thank you,
Claude Houde VA2 HDD
Le 2014-08-15 12:00,
On 15 Aug 2014 at 20:57, paul swed wrote:
Did check NAA and its banging into Boston.
2 Megawatts to that antenna should show VOLTS at your place.
We used that station for many years for VLF propagation research in
Missoula, Montana. It banged in 24/7/365. Still does, except when its down
for
interesting to read:
a very low frequency comparator for relating local frequency to u.s.
standards http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1964-10.pdf
73
alex
On 8/15/2014 4:52 PM, Arthur Dent wrote:
Not sure whats up with the link when I click it I get the download. Its a
2.5MB file
19 matches
Mail list logo
