[time-nuts] Apelco ...was Loran-C POSAID2 Software

[Alan Melia]

Hi John I have a manual dated 1989 for a later version Apelco ( DXL 6300)
The manual covers operation nicely, but the data for the Lessay chain is
incorrect. I can enter the GRI manually and the receiver locks nicely. I
have disassembled the eprom but cannot recognise the data areas to patch the
right rates in, and associate them with the lat and long of the statons. I
have tried the obvious paths but had no help the UK dealer ceased trading
and filed earlier in the year. Their engineer did try to help but could not
find information. Are you aware of any source of information on their
products and updates??

I am in the process of turning this into a 10MHz locked source, (a couple of
internal links) as it is not really too useful for Nav but it would be nice
to get it working properly. Particularly as we look like having one of the
last operational chains in Western Europe.

Alan G3NYK
----- Original Message ----- 
From: "J. Forster" <jfor at quik.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Friday, July 09, 2010 11:14 PM
Subject: Re: [time-nuts] Loran-C POSAID2 Software


> A definite maybe.
>
> In the late 1970s, Raytheon farmed out their small boat LORAN receivers to
> a New Hampshire company, Appelco. They made 8085 based LORAN receivers w/
> LED readout of time differences.
>
> Later, Appelco produced an upgraded version with a daughter board, also
> with an 8085, that took the data from the mother board and converted it to
> Lat/Long readout.  Obviously, that daughter board had the needed SW in its
> ROM. Mine certainly worked on the bench and gave consistent positions to
> within about 100 feet. The model number was LC....? I'm not certain there
> were many produced, but it might be worth a look.
>
> BTW, Raytheon places a muli-million dollar order w/ Appelco, then pulled
> the plug on a technicality. Appelco went bust. I got the stuff at their
> bankrupcy auction.
>
> The down side is I cannot put my hands on it any time soon.
>
> FWIW,
>
> -John
>
> ================
>
>
> > The Coast Guard Research and Development Center has developed "Coast
> > Guard POSAID2 ver 2.1a", a DOS-based program for converting LORAN-C
> > time differences (TDs) to latitude and longitude.
> > As the old link at the USCG site is apparently broken, I wonder if
someone
> > in this novel group still has such an interesting program.
> >
> > Thanks in advance,
> > Antonio
> > CT1TE
> >
> >
> >
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