[time-nuts] Loran C sounds

[Sykes, Stephan]

Majdi is correct. The budget report I saw showed that it was less to
upgrade than to decommission. It still doesn't make sense to rely on
only one system with the assumption that it won't break. I think in the
future that shutting down these site will be deemed a bad idea.


Steve KD2OM

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Majdi S. Abbas
Sent: Friday, February 12, 2010 13:01
To: peter at ni6e.com; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Loran C sounds


On Fri, Feb 12, 2010 at 07:29:39AM -0800, Peter Putnam wrote:
> The antenna required on an aircraft must be vertically polarized and
> of significant length. The route from the US west coast to Hawaii
> had no coverage in the middle one-third of the route at night.
> Coverage was even less during daylight hours.

	Not so;

	Designs for H-field antennas for LORAN and GPS exist, and
have been prototyped.

	eLORAN receivers perform on the order of unassisted GPS,
and combined receivers (eLORAN+GPS) beat the accuracy of either.

	The problem with the -C shutdown is it means they having
nearly finished the upgrades, will never run the new system.
It's going to cost more to tear it down than finish the modernization.

	Cheers,

	--msa

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