21-533.fm Page 18 Thursday, August 5, 1999 3:47 PM
Then, while the helper holds down the transmit key, walk around and adjust the meter’s knob until the meter’s nee- dle moves to 3 on the FIELD STRENGTH scale.
Notes:
•If you use a CB that has sideband modes (SSB), do not select any of these modes. (Use only AM for field strength measurements).
•If you have an amateur radio, select the continuous wave (CW) or tuning mode to check the field strength.
4.Have the helper release the transmit key, then make a change to your radio or antenna (such as adjusting the antenna or transmitter or adding a new antenna).
5.When the change is completed, have the helper hold down the transmit key again while you watch the meter’s needle.
If the field strength reading is higher, you have probably improved the power output and efficiency of your radio and antenna. If the field strength reading is lower, repeat Steps 4 and 5.
Note: If you move the physical location, or change the transmission direction, of your antenna, you might have to recalibrate the meter and measure the field strength again. See “Calibrating the Meter/Measuring Field Strength” on Page 13.
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