■ Monitor function
This function is used to listen to weak signals, without dis-
turbing the squelch setting. It can also be used to open the
squelch manually, even when mute functions such as the
tone squelch are in use.
➥ Hold down [SQL] to monitor the receive frequency.
The [SQL] switch can be set to a ‘sticky’ operation in the
Expand set mode. See page 49 for details.
■ Attenuator function
The attenuator prevents a received signal from distorting
when very strong signals are near a desired frequency, or
when very strong electric fields, such as from a broadcasting
station, are near your location.
➥
While holding down [FUNC], push [ATT](SQL) to turn the
attenuator function ON or OFF.