Materials required:

• 10' section 1" EMT conduit or equivalent
• 2 stainless steel hose clamps, 2-1/4" (34-57mm) size, #28, for attaching to a 1" mast
• coax sealant (optional)

Mast - a metal mast is required for mounting the sensor. It must be connected to another metal structure that is grounded. This can be a tower, ground rod, or the steel frame of building. Any type of steel or aluminum mast can be used. Electrical conduit is cost-effective, although TV mast pipe can work as well. The mast can be as short as five feet if directly attached to a tower or the frame of a building. A minimum of 10 feet is required for ground mouting.

Ground Plane - The effectiveness of the sensor is directly related to the quality of the ground plane. This is the most important requirement for operation of the sensor. The mast itself is insufficient as a ground plane. As discussed above, the mast must be electrically connected to another ground. Ground can be established by connecting to a ground rod, a tower or the steel frame of a building. A five foot mast will be sufficient for attachment to a tower or steel building. If using a ground mounted installation with ground rods, you must use a 10 foot mast (minimum) connected to a ground rod.

Location - The location is second only in importance to the ground plane. You must remember that the sensor is essentially a VLF receiver. Therefore, the HAAT (Height Above Average Terrain) is second only to the ground plane in determining the range of the sensor.

Range - The range will vary depending on the type of installation. Some general guidelines:

• Ground Level w/10' Mast and Ground Rod - Local coverage (usually out to about 30-40 miles).
• Other Than Ground Mounting - Assuming a good ground plane is installed, the range will be directly proportional to HAAT. This can vary from a couple of hundred miles to as much as a thousand miles or more. Typically moderate heights (30 - 40 feet) work best. Understand that each installation will be different. The effective range must be determined by observation.

Final Installation Steps

Ok	Procedure
	Using the two stainless steel hose clamps you purchased for the purpose, mount the sensor so that the top of the coupling section is aligned with the top of the metal mast. See the attached photograph for details.
	Attach ground lead from the sensor to the mast. There are two ways to do this. The easiest is to strip approximately 1" of insulation from the wire and tighten it down under one of the stainless clamps. Another approach is to use a small ground lug attached to the mast. The latter will probably provide a better permanent ground if some sort of sealant is applied to the lug once it is mounted. If doing the latter, you will find it easier to solder the ground lead to the lug before mounting it on the mast (the mast will act as a giant heat sink making soldering very difficult).
	Dress coax and ground lead to mast as required. Believe it or not, electrical tape works much better than nylon tie-wraps. The tie-wraps have a tendency to pop after being in place for a few months. The tape may look nasty after several months, but it will stay.
	Using coax sealant, weather seal the leads coming out of sensor. A little goes a long ways here, so be conservative with how much you use.
	Finish your installation by running the coax to the X1W-1 or X1W-2, attaching the RCA male phono plug and plugging it in.

This completes the installation phase. Continue with the operations section.

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