Me and the TAGS (More)
Posted on 6/13/2020
First by introduction I was a Sperry Field Engineer first working on NAVDAC Mk 1 and then on the WPN-3 Loran "C" receivers.
I am one of a few who went to sea on all three TAGS ships.
I met the Bowditch, Dutton, and Michaelson when they returned from Europe December 1960 for overhaul. I accompanied Dutton and Bowditch during the overhauls at Maryland Drydock and Shipbuilding in Baltimore Harbor. After the overhaul period I was the Sperry Field Engineer on Bowditch embarking for sea trials in waters off Bermuda and then degaussing at the range in Newport RI. From there we left for Bergen Norway - 20 days of the worst weather that the North Atlantic could throw at us.
During the next year and a half we surveyed in the North Atlantic, North Sea, Mediterranean and Bay of Biscay. We operated 24 days at sea, four days in port except for one 31 day period at sea followed by six days in port. Our R&R ports were Bergen Norway for six months, then Belfast Ireland twice, then down to the Med for Athens and Naples. I left Bowditch in Naples June of 1963.
I was on Michaelson for Loran "C" survey where we circumnavigated the Mediterranean sea to re-calibrate overland phase corrections. This was just after we were thrown out of Libya and Russia took over Wheelus Air Force Base. I met Michaelson in Malaga Spain and left it a month later in Barcelona. Russia used our Loran setup for jamming the network. They tried to manipulate our receivers to navigate us into Libyan territorial waters. The two Mk 1 Sperry SINS saved the day.
I was on Dutton during January and February of 1975. I picked I met Dutton in Yokohama and left it in Hakodate. The Loran network had been modified so that it could also be used for communication. When you looked at the cycle signal you could see the cycle jitter as two discrete Loran signals. I did not know that they had added the jitter - It looked a little odd. Apparently they added some form of phase modulation. Since the phase error was signal that drove the oscillator AFC circuits, the jitter got lost.
After these stints I went to work on Polaris Submarines in New London and Charleston with trips on Compass Island and Observation Island.