User's Manual

SolvingReceptionProblems

The Precision Soil Sensor system operates under Part 15 of the FCC rules.

This means that it has to comply with certain standards and is only allowed

to transmit up to a certain power level. In rating transmitters of any form,

typically a Line-of-Sight (LOS) value is used to show the relative eective-

ness of a transmitter and allow a transmitter and receiver to be compared to

one another using a fair (apples to apples) method. The Precision Soil Sensor

has an eective operating range up to 500 feet LOS - meaning in an open

eld, with no obstructions, the system will have a successfully communica-

tion range of up to 500 feet. However, in almost all installations, there are

obstacles between the sensor and receiver such as walls, oors, etc. These

obstacles will aect the signal reception and typically reduce the radiated

signal strength sent to the receiver. Dierent objects aect the transmitted

signal dierently depending on the construction material, geometry, and

size. Typically, most residential construction materials do not reduce the

eective transmitted signal enough to pose problems under normal installa-

tion conditions. However there are some indoor installations with very thick

walls, or where radio frequency interference is high due to a nearby pump

motor or large electrical appliance.

To help resolve wireless communication problems:

• Installthesensorasclosetothereceiverlocationaspossibletoreducethe

potential for interference and signal reduction. If the signal strength is not

good in one location, try another appropriate location nearby - just mov-

ing the sensor a few feet can greatly improve signal strength.

• Interiorlocationswherecellphonesorcordlessphoneshavetroublewith

reception may indicate areas with poor RF signal transmission. The receiv-

er can be installed outdoors and connected to the timer with extended

wire leads.

Troubleshooting