Setting the squelch threshold – Garmin VHF 725e User Manual

Page 23

GETTING

STARTED

Setting the

Squelch

Threshold

NOTE: You will notice an A indicator adjacent to

some channel numbers in the USA and Canadian

bands. These are simplex channels (transmitting and

receiving on the same frequency) while the International

counterpart is a duplex channel (transmitting on one

frequency while receiving on another.)

Setting the Squelch Threshold

Setting the Squelch is important for recep-
tion of signals you want to hear. There are ten
threshold levels, from 0, which allows all signals
to be received, to 9, which allows only the
strongest signal to be heard through the speaker.
The diagram in Figure 5 demonstrates how
setting the threshold level allows you to hear
only the signals you desire, while weaker,
unintelligible signals are not heard.

To set the Squelch threshold:

1. Adjust the Squelch to the lowest setting by

pressing and holding the Squelch (SQ) key, then

pressing the DOWN arrow key repeatedly until the

display indicates 0. You should hear static. If you

hear a voice transmission, change to another

channel and repeat this step. (Figure 5)

2. While holding the Squelch (SQ) key down, use

the UP arrow key to increase the squelch level to

1. If no static is heard, you have set an

acceptable squelch threshold level. If you hear

static, then increase to the next threshold level,

repeating the process until unwanted static is

eliminated. Release the SQ key to return to your

selected channel. The squelch setting is universal

for all channels, but it may require resetting from

time to time

NOTE: During squelch adjustment, Tri-Watch and

Scan are suspended.

FIGURE 5

EXAMPLE of THRESHOLD

SET AT LEVEL 5

Selected Squelch Level

Up/Down Keys

Only Signals
Stronger Than

Level 5
Will Be Heard

Signal At Level 6

Squelch (SQ) Key