Communications: radio wave antennas – Antennas – Rod type
Reexamination Certificate
2005-06-14
2005-06-14
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
Rod type
C343S713000, C343S715000, C343S718000, C343S902000, C455S120000, C455S125000, C455S170100, C455S172100, C455S184100, C455S222000, C455S283000, C455S296000, C455S297000
Reexamination Certificate
active
06906684
ABSTRACT:
A receiver receives an electromagnetic signal via an antenna mounted on an antenna mast. A signal evaluator determines or measures a signal quality level associated with the received electromagnetic signal. The signal quality compares the determined signal quality level to a threshold minimum signal quality level. A current elevational position of the antenna mast is detected or tracked. The antenna mast is raised to a greater height than the current elevational position if the compared signal quality level is less than the threshold minimum signal quality level and if the current elevational position is less than a maximum height of the antenna mast.
REFERENCES:
patent: 2834012 (1958-05-01), Allen
patent: 4803493 (1989-02-01), Jamison
patent: 4932176 (1990-06-01), Roberts et al.
patent: 5164739 (1992-11-01), Koide et al.
patent: 5865390 (1999-02-01), Iveges
Al-Nazer Leith A.
Deere & Company
Wong Don
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