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KF5JRV > TECH 20.01.17 13:22l 5 Lines 460 Bytes #999 (0) @ WW
BID : 9103_KF5JRV
Read: GUEST
Subj: The Quadrant
Path: IZ3LSV<IW8PGT<CX2SA<N0KFQ<KF5JRV
Sent: 170120/1215Z 9103@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.13
The quadrant was one of the earliest navigator's instruments, with the first documented use in the mid 1400's. It was probably the first instrument provided by the astronomers and mathematicians that Prince Henry the navigator had gathered to help with the Portuguese exploration of the west coast of Africa. unfortunately it was not very effective on board ship with the plumb bob swinging around with ship movement.
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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