Specifications

Section 1. Preparation and Siting
Needle-nose pliers
Wire strippers
Pocket knife
Calculator
Volt / Ohm Meter
Electrical Tape
Step ladder (6')
Station manuals
Station log and pen
Open end wrenches: 3/8", 7/16", 1/2", 9/16"
Socket wrench and 7/16" deep well socket
Adjustable wrench
Pliers
Conduit and associated tools (as required)
Felt-tipped marking pen
Claw hammer
Pipe wrench (12")
1.4 Supplies for Power and Communications Options
AC Power
Wire, conduit, and junction boxes as needed (see Figure 2.1-1).
User supplies valve box at base of station and weatherproof
enclosure for transformer. See Figure 2.1-1.
NOTE
Phone Modem
Phone modem at the central computer.
Dedicated single twisted pair with shield phone line to the weather station
valve/junction box (see Figure 2.1-1).
Short-Haul Modem
Direct burial cable with a minimum of 2-twisted pairs with shield (minimum 5
conductors total) to travel from the weather station to the central computer
junction box. Direct burial armored cable may be required for rocky soils or
rodents (Anixter p/n F-02P22BPN (phone [phone]) or equivalent type
cable (see Figure 2.1-1).
RF450
Antenna for the ET107 station (14205 Yagi antenna recommended). PS24
Power Supply and #18520 Hanger Kit if not using ac power (see Appendix B).
1.5 Determining True North for Wind Vane
Orientation
Magnetic declination, or other methods to find True North, should be determined
prior to installing the weather station. True North is usually found by reading a
magnetic compass and applying the correction for magnetic declination*; where
magnetic declination is the number of degrees between True North and Magnetic
North. Magnetic declination for a specific site can be obtained from a USFA map,
local airport, or through an internet service called NSSDC CGM (Section 1.5.1). A
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