Loran?
Loran c in NE US.
Definitely acquired only 9007 on the austron 2100 and 2100f.
The systems can lock in as little as 20 minutes at the fine time of 0300
local.
But most likely after midnight to most likely 4 in the morning.
Now would be the time to have the HPIB interfaces and I don't. Would be able
to figure when the window is open to the US.
Using the antenna in described in this thread. The signal was at 77db on
both receivers. The signal to noise or noise (Have never under stood the
figure in austron sense) is 637 and a bad sig is 238. Old 9960 chain Master
60 miles was 37db as a reference.
Still see the noise burst signal and pretty sure its nothing within the
house. Everything was pretty much off at 0300.
The sky wave signal worked pretty well.
The 2100f is locked to GPS through a HP 3801 consistent at -2.4 e -9
The 2100 is locked to RB reference house and -1.5 e -10.
Kind of interesting that gps is not as good as the rb that I tuned when I
had local loran.
But clearly both are down in accuracy from what I have seen. Skywave
effects?
Regards
Paul
WB8TSL
2010/12/20 paul swed paulswedb@gmail.com
Interesting
Just barely I may be seeing several chains on the east coast of the US near
Boston.
I am using a austron 2100 and a 2100F. Definitely see it trying to lock and
its does go into settle mode. But I am afraid I may have some nasty
switching power supply of some sort nearby. I see a bursting noise signal
semi synchronous at 100 KC. Never seen this before.
I seem to see 9007 and 6731 the best. 7499 nothing and would say 7001 quite
weak.
May have to go to the older Austron 2000c and take a look. That gives me
much more flexibility in control to confirm that I can see the signals.
Antenna is a Loran preamplified antenna (No idea the model hamfest
stuff) with a fiber glass whip 7' tall wound with hundreds of turns of #26
gauge wire as a single layer. Approx 6 ft off the ground.
Regards
Paul
WB8TSL
2010/12/20 paul swed paulswedb@gmail.com
Thanks Poul will do its long enough past sunset to start hunting.
On Mon, Dec 20, 2010 at 5:45 PM, Poul-Henning Kamp phk@phk.freebsd.dkwrote:
In message <AANLkTi=KYamMSdN7KoMCPBs8iGw=EXzxm7NQ767-+TOc@mail.gmail.comEXzxm7NQ767-%2BTOc@mail.gmail.com>,
paul
swed writes:
Well to be honest when I typed loran it was simply because I felt like
it.
It was more important to communicate the fact that I couldn't here and
european stations in the northeast us. Thats all that mattered. Caps or
lowercase simply no longer matters to me on the dead us service.
So getting back at it I will fire up a different antenna and preamp and
give
it one more shot.
Make sure you listen on the correct GRI's, some tables still list the
long abandoned 3-digit USCG chains, rather than the 4-digit NELS chains:
Eiği, GRI=9007
Lessay, GRI=6731
Sylt, GRI=7499
Værlandet, GRI=7001
For what it's worth, I have never been able to more than barely detect
the 9960 chain from here in Denmark, and that was only after a major
DSP exercise...
Poul-Henning
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
incompetence.
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In message AANLkTikLk32saA+c0nRHpTMHE70V_oTPd0xJC8Fift=o@mail.gmail.com, paul
swed writes:
Loran c in NE US.
Those of you playing with Loran-C DX'ing might be interested in
using this receiver design:
http://phk.freebsd.dk/AducLoran/
Sparkfun.com has the ARM board for $80:
http://www.sparkfun.com/products/711
In addition you need some source of 42 MHz clock, I used the TAPR
PLL board, but anything goes.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
One quick update
The reason the GPS was performing poorly was that I left the antenna off it.
Was using that antenna port to troubleshoot a austron 2201a.
There is a cartoon character called Bart Simpson. He would say "Doaaaaa".
Regards
Paul
On Tue, Dec 21, 2010 at 10:36 AM, Poul-Henning Kamp phk@phk.freebsd.dkwrote:
In message AANLkTikLk32saA+c0nRHpTMHE70V_oTPd0xJC8Fift=o@mail.gmail.com,
paul
swed writes:
Loran c in NE US.
Those of you playing with Loran-C DX'ing might be interested in
using this receiver design:
http://phk.freebsd.dk/AducLoran/
Sparkfun.com has the ARM board for $80:
http://www.sparkfun.com/products/711
In addition you need some source of 42 MHz clock, I used the TAPR
PLL board, but anything goes.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | 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
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
I await the day when someone opines as to the number of angels that can
dance on the head of a GPS antenna.
Oh dear, now I have this vision in my head of a bunch of angels impaled upon the antennas of a GPS satellite, much like how some of the folks who get involved in the "Running of the Bulls" end up.
Tom Frank, KA2CDK
Thomas A Frank wrote:
I await the day when someone opines as to the number of angels that can
dance on the head of a GPS antenna.
Oh dear, now I have this vision in my head of a bunch of angels impaled upon the antennas of a GPS satellite, much like how some of the folks who get involved in the "Running of the Bulls" end up.
Sounds like the question of how many parking meter fairies can dance
atop a Chicago parking pay box (with uncalibrated clock). HINT: This is
why I have a WWVB watch and avoid metered parking spaces!