Radio Shack 21-533 owner manual Calibrating the METER/ Measuring Field Strength

21-533.fm Page 13 Thursday, August 5, 1999 3:47 PM

For example, for a 50-foot diameter circle:

50 feet

= 4.363 Feet

11.46

So, you would place a mark every 4.363 feet (4 feet, 3 inches).

CALIBRATING THE METER/ MEASURING FIELD STRENGTH

Important: Be sure to follow any radio service regulations that limit the amount of time you can transmit without a break or sta- tion identification.

1.Remove the supplied short wire antenna attached to the bottom of the meter, then insert it into FS ANT on top of the meter.

13