55
Appendix D Range
Under optimum conditions, the open field range is 330 ft, i.e. when there is ‘visual’
contact between the transmitter and receiver. Walls and reinforced concrete
constructions can be passed through, but they do affect the range correspond-
ingly. A reduced range may be due to the following reasons
:
-
High frequency interference of all types.
-
Buildings of all types and vegetation.
-
Especially in the case of the wind sensor, metal roofs or roof insulation with
foil sealed glass wool can reduce the range.
-
Transmitter and receiver clearance from conductive surfaces or objects which
affect radiation characteristic and thus the range (including human bodies
and the ground).
-
Broadband interference in built-up areas may reach levels which lessen the
entire signal-to-noise ratio, thus reducing the range.
-
Units with neighboring operating frequencies may affect the receiver.
-
Poorly screened PCs may affect the receiver and reduce the frequency.
Содержание WS-2010
Страница 1: ...1 PC Radio Weather Station Operating and Evaluation Software for Windows 95 98 NT ...
Страница 7: ...7 Chapter 1 Introduction ...
Страница 14: ...14 ...
Страница 15: ...15 Chapter 2 Commissioning ...
Страница 24: ...24 ...
Страница 25: ...25 Chapter 3 File ...
Страница 31: ...31 Chapter 4 Display ...
Страница 36: ...36 ...
Страница 37: ...37 Chapter 5 Weather Display ...
Страница 39: ...39 Chapter 6 Interface ...
Страница 43: ...43 Chapter 7 View ...
Страница 47: ...47 Chapter 8 Windows ...
Страница 49: ...49 Chapter 9 Buttons ...