Radio Shack 21-533

2. Set CALIBRATION/FS/SWR to CALIBRATION/FS.

3. To calibrate the meter, have your helper select a channel

or frequency on your transmitter and hold down its trans-

mit key. Tell the helper

not

to speak into the microphone.

Then, while the helper holds down the transmit key, walk

around inside the marks you made using the steps in

“Preparing the Antenna Site” on Page11, covering as

much area inside the circle as you can. As you walk,

watch the meter’s needle. If it moves to the right of 5 on

the FIELD STRENGTH scale, rotate the knob on the front

of the meter until the needle lines up with 5 on the 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).

21-533.fm Page 14 Thursday, August 5, 1999 3:47 PM