Re: PN2060C Phase Noise Analyzer progress
Hi All
There is some progress on PN2060C/D Phase Noise Analyzer development per the bg6khc website update update on 22 Sept.
The prototype of the new PN2060C with 4 ADCs is running and looking very good.
Regards Drew VK4ZXI
https://qsl.net/bg6khc/pn2060c_phase_noise_analyzer.htm
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Today's Topics:
- Re: Anyone else have their Loran receiver locked? (KR7D Scott)
- Re: Eloran long test from now to August or September.
(David Taylor) - Re: Eloran long test from now to August or September. (paul swed)
- Re: Eloran long test from now to August or September. (Bob Camp)
- Re: Eloran long test from now to August or September. (Jim Lux)
- Re: Eloran long test from now to August or September.
(JOHN HARTZELL) - Re: Eloran long test from now to August or September.
(jeanmichel.friedt@femto-st.fr) - Re: Eloran long test from now to August or September.
(Poul-Henning Kamp)
Message: 1
Date: Sat, 23 Sep 2023 21:08:40 -0700
From: KR7D Scott kr7d.scott@gmail.com
Subject: [time-nuts] Re: Anyone else have their Loran receiver locked?
To: Discussion of precise time and frequency measurement
time-nuts@lists.febo.com
Message-ID: CBB17895-6EFA-48A7-8FAD-0600029D2405@gmail.com
Content-Type: multipart/mixed;
boundary=Apple-Mail-24E47AB5-3E6D-4572-BB0B-C5832AF65468
For what it’s worth
I tuned my ham transceiver (unlocked icom 7610) to 100 kHz, with an 80-10 inverted V at 15 meters (outside of Portland OR). And to my surprise there are S9 pulses that sound like a tiny jackhammer. Wow!
Other than buying a 20th century legacy dedicated device to decode, are there any newer (SDR) suggestions? I have RPi and RSPn
Thanks,
Scott KR7D
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Sent from my iPhone
On Sep 23, 2023, at 6:38 PM, Shaun Merrigan via time-nuts time-nuts@lists.febo.com wrote:
I recommissioned my SRS FS700 (Option 1 unit) several days ago. It has been locked continuously for 84 hours (no unlocks reported). It is locked one of the slave stations as it also reports that there is no master station. At the moment frequency difference with the reference (GPS, Z3801) is 2E-11 . At this point I think I will put it in a rack with the Austron 2100F and let them run (why not?).
I did note that the FS700 took much longer (45min - 1 hour) to achieve lock than did the Austrons (2100F, 2100R). My antenna is an LF engineering L-400B with about 16dB of attenuation in the line to get the best s/n. I am using the 420 ohm resistor hack to make the FS700 believe it is feeding an active antenna.
With the changing geopolitical climate perhaps eLORAN will be here to stay.
Shaun M (Central Alberta)
-----Original Message-----
From: Rodger via time-nuts time-nuts@lists.febo.com
Sent: Friday, September 22, 2023 9:15 AM
To: 'Discussion of precise time and frequency measurement' time-nuts@lists.febo.com
Cc: 'Don Moman VE6JY' ve6jy.1@gmail.com; rodger_adams@yahoo.com
Subject: [time-nuts] Re: Anyone else have their Loran receiver locked?
I'm trying my best to receive it in Charlotte, NC., though I realize it's probably a fool's errand. I have an Austron 2100 T with loop antenna. I've seen a green tracking light twice in the last few weeks. I'm trying to set up some monitoring with a virtual chart recorder to see if it might actually be locking occasionally. My 2100T has a GPIB interface so might see if it could be used to catch an occasional intermittent lock. I'm not expecting much, but it's fun to try.
Rodger
-----Original Message-----
From: Don Moman VE6JY via time-nuts time-nuts@lists.febo.com
Sent: Thursday, September 21, 2023 11:18 PM
To: Discussion of precise time and frequency measurement time-nuts@lists.febo.com
Cc: Don Moman VE6JY ve6jy.1@gmail.com
Subject: [time-nuts] Re: Anyone else have their Loran receiver locked?
100 khz seems active here in Alberta. here's my KIWI display a few minutes
ago:
[image: 2023-09-21 21_15_51.jpg]
On Thu, Sep 21, 2023 at 5:36 PM Skip Withrow via time-nuts < time-nuts@lists.febo.com> wrote:
Well, I think I am a little late to the eLoran party. After trying
the old Austron 2100 in the city with no (well, a little) success. I
took it up to the mountain house yesterday to try it in a quieter
environment. No luck last night, so I checked a west coast SDR
receiver and see no sign of the eLoran signal.
I assume that the test has been ended. If/when the eLoran signal
comes back I would be interested in knowing. Or, if someone is still
locked up please let us know. My assumption is that the tests are with GRI 5990.
Regards,
Skip Withrow
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Message: 2
Date: Sun, 24 Sep 2023 14:14:58 +0100
From: David Taylor david-taylor@blueyonder.co.uk
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: time-nuts@lists.febo.com
Message-ID: e5007d0c-6e17-4b26-b688-c957a4b3c3bd@blueyonder.co.uk
Content-Type: text/plain; charset=UTF-8; format=flowed
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the UK,
co-located with the MSF transmitter at Anthorn, for research purposes. There is
also some discussion about licensing some new operators mainly for timing
purposes. Does anyone have any information on the coverage available from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
Web: https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.satsignal.eu%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=s86kHcL3V18Ralc2RiQg4Ru2KEdUOmBkm2unHI8tKRI%3D&reserved=0https://www.satsignal.eu/
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv
Message: 3
Date: Sun, 24 Sep 2023 11:47:47 -0400
From: paul swed paulswedb@gmail.com
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: Discussion of precise time and frequency measurement
time-nuts@lists.febo.com
Message-ID:
CAD2JfAjTFHmw+QBdbHO8WDZ-GwcVqOeHOGoFwvkjRnYGSp+NyQ@mail.gmail.com
Content-Type: text/plain; charset="UTF-8"
David
There have been various things posted in the past that have required A/Ds
and such. Poul here on Time-nuts did a semi software version. (I think) But
the fact is the old LORAN C receivers for frequency are a great way to go.
The only difference between LORAN C and eLORAN is the 9th pulse used as a
data channel. There was no 9th pulse in the old LORAN C. I have not seen
anything that describes the coding. It may be out there but I haven't been
interested in that. For many of us its an alternate very accurate Cesium
referenced source.
How it all develops if the governments supports it will be pretty
interesting. Certainly the old positioning is possible. The data channel
can provide propagation behaviors to allow for very accurate time and
positioning. The new generation receivers will all be SDR based.
I have actually seen an operational prototype numbers of years ago.
Regards
Paul
WB8TSL
On Sun, Sep 24, 2023 at 11:04 AM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the
UK,
co-located with the MSF transmitter at Anthorn, for research purposes.
There is
also some discussion about licensing some new operators mainly for
timing
purposes. Does anyone have any information on the coverage available
from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an
Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
Web: https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.satsignal.eu%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=s86kHcL3V18Ralc2RiQg4Ru2KEdUOmBkm2unHI8tKRI%3D&reserved=0https://www.satsignal.eu/
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv
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Message: 4
Date: Sun, 24 Sep 2023 12:38:34 -0400
From: Bob Camp kb8tq@n1k.org
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: Discussion of precise time and frequency measurement
time-nuts@lists.febo.com
Message-ID: B77D5EFA-170B-4631-8117-99BA59C8AFDD@n1k.org
Content-Type: text/plain; charset=utf-8
Hi
The issue with doing this with a low cost SDR board is not so much receiving / demodulating the
signal. It’s a pretty good bet somebody out there has been there / done that. The issue is pulling
an accurate “time pulse” out of your typical SDR setup. This is a somewhat unusual thing to want
to do. Finding a “stock” setup on a low cost board that does this will be a bit of a challenge.
Bob
On Sep 24, 2023, at 11:47 AM, paul swed via time-nuts time-nuts@lists.febo.com wrote:
David
There have been various things posted in the past that have required A/Ds
and such. Poul here on Time-nuts did a semi software version. (I think) But
the fact is the old LORAN C receivers for frequency are a great way to go.
The only difference between LORAN C and eLORAN is the 9th pulse used as a
data channel. There was no 9th pulse in the old LORAN C. I have not seen
anything that describes the coding. It may be out there but I haven't been
interested in that. For many of us its an alternate very accurate Cesium
referenced source.
How it all develops if the governments supports it will be pretty
interesting. Certainly the old positioning is possible. The data channel
can provide propagation behaviors to allow for very accurate time and
positioning. The new generation receivers will all be SDR based.
I have actually seen an operational prototype numbers of years ago.
Regards
Paul
WB8TSL
On Sun, Sep 24, 2023 at 11:04 AM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the
UK,
co-located with the MSF transmitter at Anthorn, for research purposes.
There is
also some discussion about licensing some new operators mainly for
timing
purposes. Does anyone have any information on the coverage available
from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an
Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
Web: https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.satsignal.eu%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=s86kHcL3V18Ralc2RiQg4Ru2KEdUOmBkm2unHI8tKRI%3D&reserved=0https://www.satsignal.eu/
Email: david-taylor@blueyonder.co.uk
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Message: 5
Date: Sun, 24 Sep 2023 15:10:11 -0400
From: "Jim Lux" jim@luxfamily.com
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: time-nuts@lists.febo.com
Cc:
Message-ID:
1695582611.cx2tbgb6og4g0ooc@webmail.hosting.earthlink.net
Content-Type: text/plain; charset=UTF-8
I agree. Most inexpensive SDRs, and more particularly, the gnuradio or other software, tends not to be designed for deterministic timing. It is true that you can run some tests and empirically determine the delay through the software, but then, you have to worry about the non-deterministic behavior of the host OS.
Typically, what you’d need is to simultaneously grab a counter running off the sample clock AND the ADC samples (presumably decimated in the hardware), and then you can deal with the uncertainty, and generate a count that can be compared against that same counter to generate an output pulse. Most of the SDR hardware out there uses one of the multitude of chips that implements some form of pre filtering and decimation and post filtering - but those are typically deterministic in delay. It’s everything after the interface to the host processor that’s non deterministic.
Now, if you’re implementing the SDR on a dedicated processor, with no OS, and careful use of interrupts, you can do it. But that’s what commercial timing receivers do.
On Sun, 24 Sep 2023 12:38:34 -0400, Bob Camp via time-nuts time-nuts@lists.febo.com wrote:
Hi
The issue with doing this with a low cost SDR board is not so much receiving / demodulating the
signal. It’s a pretty good bet somebody out there has been there / done that. The issue is pulling
an accurate “time pulse” out of your typical SDR setup. This is a somewhat unusual thing to want
to do. Finding a “stock” setup on a low cost board that does this will be a bit of a challenge.
Bob
On Sep 24, 2023, at 11:47 AM, paul swed via time-nuts wrote:
David
There have been various things posted in the past that have required A/Ds
and such. Poul here on Time-nuts did a semi software version. (I think) But
the fact is the old LORAN C receivers for frequency are a great way to go.
The only difference between LORAN C and eLORAN is the 9th pulse used as a
data channel. There was no 9th pulse in the old LORAN C. I have not seen
anything that describes the coding. It may be out there but I haven't been
interested in that. For many of us its an alternate very accurate Cesium
referenced source.
How it all develops if the governments supports it will be pretty
interesting. Certainly the old positioning is possible. The data channel
can provide propagation behaviors to allow for very accurate time and
positioning. The new generation receivers will all be SDR based.
I have actually seen an operational prototype numbers of years ago.
Regards
Paul
WB8TSL
On Sun, Sep 24, 2023 at 11:04 AM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the
UK,
co-located with the MSF transmitter at Anthorn, for research purposes.
There is
also some discussion about licensing some new operators mainly for
timing
purposes. Does anyone have any information on the coverage available
from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an
Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
Web: https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.satsignal.eu%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=s86kHcL3V18Ralc2RiQg4Ru2KEdUOmBkm2unHI8tKRI%3D&reserved=0https://www.satsignal.eu/
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv
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Message: 6
Date: Sun, 24 Sep 2023 19:31:24 +0200
From: JOHN HARTZELL johnhartzell@icloud.com
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: Discussion of precise time and frequency measurement
time-nuts@lists.febo.com
Message-ID: A5B42A23-EEED-4A9D-9D56-81B37538701B@icloud.com
Content-Type: text/plain; charset=utf-8
One word - UrsaNav.
Kind regards,
John
https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flinkedin.com%2Fin%2Fjohn-h-6a131b12%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=VJhqaZ1cB36seIOULr5UHnaogB3f2OOeBxcoePiuo40%3D&reserved=0https://linkedin.com/in/john-h-6a131b12/
On Sep 24, 2023, at 7:24 PM, Bob Camp via time-nuts time-nuts@lists.febo.com wrote:
Hi
The issue with doing this with a low cost SDR board is not so much receiving / demodulating the
signal. It’s a pretty good bet somebody out there has been there / done that. The issue is pulling
an accurate “time pulse” out of your typical SDR setup. This is a somewhat unusual thing to want
to do. Finding a “stock” setup on a low cost board that does this will be a bit of a challenge.
Bob
On Sep 24, 2023, at 11:47 AM, paul swed via time-nuts time-nuts@lists.febo.com wrote:
David
There have been various things posted in the past that have required A/Ds
and such. Poul here on Time-nuts did a semi software version. (I think) But
the fact is the old LORAN C receivers for frequency are a great way to go.
The only difference between LORAN C and eLORAN is the 9th pulse used as a
data channel. There was no 9th pulse in the old LORAN C. I have not seen
anything that describes the coding. It may be out there but I haven't been
interested in that. For many of us its an alternate very accurate Cesium
referenced source.
How it all develops if the governments supports it will be pretty
interesting. Certainly the old positioning is possible. The data channel
can provide propagation behaviors to allow for very accurate time and
positioning. The new generation receivers will all be SDR based.
I have actually seen an operational prototype numbers of years ago.
Regards
Paul
WB8TSL
On Sun, Sep 24, 2023 at 11:04 AM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the
UK,
co-located with the MSF transmitter at Anthorn, for research purposes.
There is
also some discussion about licensing some new operators mainly for
timing
purposes. Does anyone have any information on the coverage available
from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an
Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
Web: https://aus01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.satsignal.eu%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=s86kHcL3V18Ralc2RiQg4Ru2KEdUOmBkm2unHI8tKRI%3D&reserved=0https://www.satsignal.eu/
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Twitter: @gm8arv
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Message: 7
Date: Sun, 24 Sep 2023 19:59:12 +0000
From: jeanmichel.friedt@femto-st.fr
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: "Discussion of precise time and frequency measurement"
time-nuts@lists.febo.com
Message-ID: f1a9997543d8e29360e1f853f8f4276f@femto-st.fr
Content-Type: text/plain; charset="utf-8"
I agree. Most inexpensive SDRs, and more particularly, the gnuradio or other software, tends not
to be designed for deterministic timing. It is true that you can run some tests and empirically
determine the delay through the software, but then, you have to worry about the non-deterministic
behavior of the host OS.
If I may disagree, the only part that matters when generating a timing information
from a SDR is the knowledge that not a single sample is lost in the periodic acquisition
by the ADC, and the time information encoded in the received message. Since both
information propagate through the asynchronous processing chain at the same rate, they
end up being decoded simultaneously and can be compared with each other to adjust e.g.
the clock of the ADC which also acts as the source of the 1-PPS generator. This is at
least what we did in https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fjmfriedt.free.fr%2Fifcs2021.pdf&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mKPgd1iIXDBleOV5LEs9AvH0iLkBNZFIPBpTGGTn%2Bkw%3D&reserved=0:http://jmfriedt.free.fr/ifcs2021.pdf our initial error in this
investigation was indeed to try and steer the GP-CPU clock and use it to generate the
timing information, when the only deterministic part of the processing is in the FPGA
clocking the ADC.
Best, Jean-Michel
Typically, what you’d need is to simultaneously grab a counter running off the sample clock AND the
ADC samples (presumably decimated in the hardware), and then you can deal with the uncertainty, and
generate a count that can be compared against that same counter to generate an output pulse. Most
of the SDR hardware out there uses one of the multitude of chips that implements some form of pre
filtering and decimation and post filtering - but those are typically deterministic in delay. It’s
everything after the interface to the host processor that’s non deterministic.
Now, if you’re implementing the SDR on a dedicated processor, with no OS, and careful use of
interrupts, you can do it. But that’s what commercial timing receivers do.
On Sun, 24 Sep 2023 12:38:34 -0400, Bob Camp via time-nuts time-nuts@lists.febo.com wrote:
Hi
The issue with doing this with a low cost SDR board is not so much receiving / demodulating the
signal. It’s a pretty good bet somebody out there has been there / done that. The issue is pulling
an accurate “time pulse” out of your typical SDR setup. This is a somewhat unusual thing to want
to do. Finding a “stock” setup on a low cost board that does this will be a bit of a challenge.
Bob
On Sep 24, 2023, at 11:47 AM, paul swed via time-nuts wrote:
David
There have been various things posted in the past that have required A/Ds
and such. Poul here on Time-nuts did a semi software version. (I think) But
the fact is the old LORAN C receivers for frequency are a great way to go.
The only difference between LORAN C and eLORAN is the 9th pulse used as a
data channel. There was no 9th pulse in the old LORAN C. I have not seen
anything that describes the coding. It may be out there but I haven't been
interested in that. For many of us its an alternate very accurate Cesium
referenced source.
How it all develops if the governments supports it will be pretty
interesting. Certainly the old positioning is possible. The data channel
can provide propagation behaviors to allow for very accurate time and
positioning. The new generation receivers will all be SDR based.
I have actually seen an operational prototype numbers of years ago.
Regards
Paul
WB8TSL
On Sun, Sep 24, 2023 at 11:04 AM David Taylor via time-nuts <
time-nuts@lists.febo.com> wrote:
On 15/09/2023 14:43, john.haine--- via time-nuts wrote:
This discussion reminds me, there is one eLoran station operating in the
UK,
co-located with the MSF transmitter at Anthorn, for research purposes.
There is
also some discussion about licensing some new operators mainly for
timing
purposes. Does anyone have any information on the coverage available
from
Anthorn please? John.
Yes, I can confirm reception in Edinburgh using a Youloop antenna in an
attached garage.
So, is there any sort of software decoder for the signal? I don't have a
specialised hardware receiver, just the usual SDR boxes including an
Airspy HF+
Discovery.
Thanks,
David
SatSignal Software - Quality software for you
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Message: 8
Date: Sun, 24 Sep 2023 20:08:26 +0000
From: "Poul-Henning Kamp" phk@phk.freebsd.dk
Subject: [time-nuts] Re: Eloran long test from now to August or
September.
To: Discussion of precise time and frequency measurement
time-nuts@lists.febo.com
Message-ID: 202309242008.38OK8Q8l011599@critter.freebsd.dk
Content-Type: text/plain; charset="us-ascii"
If you want to receive Loran-C with SDR, all you need is a 1MSPS ADC,
clocked from your house-standard.
Feel free to find inspiration:
https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fphk.freebsd.dk%2Floran-c%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=LOD0HAk7gQ6ADQjqNgr6fzOJ2r%2FkUU%2FmFSBqrqQQTQk%3D&reserved=0<http://phk.freebsd.dk/loran-c/>
https://aus01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fphk.freebsd.dk%2FAducLoran%2F&data=05%7C01%7C%7Cd4f7fde0013849edb7ae08dbbd9948c6%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638312238320138711%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=0WHjkm8R19LYZNTEib%2BlqnCqFuCg0IoOM8PacVQpC%2F8%3D&reserved=0<http://phk.freebsd.dk/AducLoran/>
I'd love to be proven wrong about the "last" bit :-)
--
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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End of time-nuts Digest, Vol 233, Issue 24