They can be useful as a comparator between two references as long as you
have a LORAN C simulator to drive the system.
I built up a unit 3 years ago may still be in the time-nuts archives. It
was fairly simple to accomplish. I took the reference and drove the
simulator. Then the simulator feeds the FR700 or austrons 2100s,2100F, and
2000. All worked.
Kind of a crazy thing to do but hated to see the systems die.
Regards
Paul
WB8TSL

On Sat, Jul 11, 2015 at 11:14 AM, James Robbins jsrobbins@earthlink.net
wrote:

On 7/11/2015 8:14 AM, James Robbins wrote:

Jim, I gave my Austron to a friend in the UK,  at the time shipping
wasn't as bad as it is now, so I hope he was reasonably happy.  I can't
see any real hope of it ever coming back here, although there have been
frequent reports of eLoran testing, I'm not sure they ever amounted to
anything.

Dan - ac6ao

In message 264CF93F-7B18-4106-901A-0EDFD93C1319@earthlink.net, James Robbins
writes:

The 2100F can be used as a 24 hour clock and has a nice-ish large
LCD display, which is about the best thing you can use it for, even
if you do have Loran-C signals - it's not a great performer.

The FS700 is basically the same design as the Infamous Dave Mills
LORAN-C timing receiver, gated integrators, and since I have serial
#2 of those, I have never felt like paying eBay prices for a FS700[1].

In theory one could retune the FS700's RF stages and use it as a
phase-tracking VLF receiver, for instance for WWVB, but you'd get
much better performance and much more fun with an SDR approach.

Poul-Henning

[1] If anybody in Europe wants to have some real fun with Loran-C
receivers, they should look at the "Locus LRS" receivers on eBay.

Not only are they much cheaper than the FS700's they are also much
more advanced:  The LRS was built to replace the Austron 5000 PDP/11
controlled monitoring receivers at the LORSTAs.

--
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.

Hi

One “use” - Hang on to them and see if the new incarnation of Loran takes hold in the US.

Second use - Sell them off to the guys in Europe and China while they still have signals on the air ….

Third - Drive them off some form of synthetic waveform out of a GPSDO.

Bob

I saw in an article that there is an eLoran site online in NJ. Is that true? And if so, is there any backwards compatibility for the old Loran-C units?

Dan

Hello Jim,

Would you happen to have complete schematics for the Austron 2100F?

73's,
John
AJ6BC

On Sat, Jul 11, 2015 at 2:38 PM, paul swed paulswedb@gmail.com wrote:

Hi

So far, all of the eLoran stuff has been backwards compatible with Loran-C. If the signal turns into a
“time signal only” in the future, that could change. Since the only signals that have been put on the air
have been Loran-C compatible, any change is pure speculation at this point. Any signal change would have
to either cause no harm to Loran-C navigation or go on the air after Loran-C navigation was history.

Bob

Hi,

For the USA and Canada, currently LORAN-C is history.

However, LORAN-C signals is still relatively well know and eLoran is a
backward compatible change for which there already is a market, so that
is good.

I think I recall another digital signal being discussed as a side-band,
which I also think I saw some specs on in an article, and it looked
interesting. We did discuss it on the list many moons ago, maybe someone
recalls and can dig up the references.

I have a FS700 for which I currently does not have a proper antenna. I
coiled up some twisted pair, but it complains about no external LNA, so
I will have to create something which acts as LNA and essentially forms
the same DC load to the FS700. I have the SC-10 OCXO in mine, and as I
recall, I think I saw GRI 80000 from russia. It would be nice to run it
for a while.

Cheers,
Magnus

On 07/12/2015 01:45 PM, Bob Camp wrote:

Magnus
I use a 420 ohm resistor to make FS700 happy. I have a LORAN C whip antenna
and preamp that then feeds a distribution amplifier for the 4 Loran C
rcvrs.
The loran C simulator lives in the same box and can feed the rcvrs also.
Regards
Paul
WB8TSL

On Sun, Jul 12, 2015 at 11:10 AM, Magnus Danielson <
magnus@rubidium.dyndns.org> wrote: