Re: [wsjtgroup] Early Experiments
- Interesting project you were involved in and I am not surprised it was reliable. I listen to several qrp cw beacons on meteor scatter daily.WSJT will even display some pings not even heard. Just curious what frequency might have been used and what was the reliable range for contacts.W1LP has proven what MS can do on the high seas. Now to convince some of the beacon owners to convert their beacons to FSK441 or JT44.TipWA5UFH----- Original Message -----From: dennuszabawaSent: Thursday, June 27, 2002 15:57 PMSubject: [wsjtgroup] Early ExperimentsI was part of project, in the late 1980's, run by the Naval Oceans
Systems Center (NOSC), San Diego, to use Meteor Burst technology to
track US Naval vessels during fleet exercises.
The equipment was supplied by Meteor Communications Corp (MCC) in
Kent, WA. It consisted of a Meteor Burst Master Station located in
Bermuda and shipboard communications units. The shipboard units were
transcievers mounted in carrying cases with internal batteries and
chargers. All control of the units was via a serial interface.
The control computers were the Zenith PCs which were bought on
government contract and running MSDOS. The control programs were
developed in C++. The programs provided control and communications
with the Meteor Burst transceivers, download of serial data from the
shipboard navigation systems and control of an antenna rotator system.
The antenna rotator system rotated a yagi antenna. The rotator was a
commercial TV unit from Alliance. The normal rotator control box was
replaced by an homebrew interface box which was controlled by a
commercial data acquisition unit made by IBM.
We were able to maintain 24 hour a day contact with seven ships
participating in the exercise for as long as 12 days. The MCC units
also provided a simple text messaging capability which was used for
operational reports and coordination.
Dennis - KG4RUL
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