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From: Hul Tytus <ht@panix.com>
Newsgroups: sci.electronics.design
Subject: time marker
Date: Fri, 17 Jan 2025 16:52:37 -0000 (UTC)
Organization: PANIX Public Access Internet and UNIX, NYC
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   I'm looking into a time marker modulated onto a rf carrier that is 
simple and at the same time accurate. The marker on the low frequency 
signal carrying the US time reference which is said to invert the carrier 
to mark the time certainly sounds simple. The remarkable accuracy of the 
RTK GPS devices, actual inches are claimed, suggests a very accurate 
means of reading the time marker.
   Anyone know of a text that deals with such circuitry or perhaps a 
schematic of a gps reciever with enough detail to show how it's done?

Hul