M-tech MT-500, Owner'S Handbook Manual

Page: 16 / 64

MT-500 15
To properly set the VOL and SQ controls:
• Rotate the SQ knob fully CCW.
• Rotate the
VOL
knob CW until background noise is plainly heard.
• Slowly rotate the SQ knob CW until the noise is muted (squelched). Then
adjust the control slightly more CW (approximately 1/8 turn). Use care
not to set the
SQ control more CW than necessary or weak signals may
not be heard.
Some channels exhibit more background noise than others, so it may be nec-
essary to readjust the squelch setting when changing channels or when scan-
ning.
Channel Selection
When the transceiver is turned On, the Primary Calling Channel (channel 16)
is selected.
There are three ways to change channels:
• Rotate the
P
US
H-EN
T
E
R
PU
SH
-E
N
T
E
R
( SELECT/ENT ) knob, press and hold the
ENT
or
EXIT
keys, or directly enter the channel number using the numeric keys on the
microphone. The
ENT
and
EXIT
keys will always change channels except
when being used to enter or edit a directory page.
Channel Banks
Your MT-500 is designed for use with the International VHF marine channel
frequencies plus authorized local channel frequencies. Only authorized deal-
ers can program other approved country channels, where specifically allowed
by government regulations, by using the 8 pin com connector.
Keypad, Transceiver
A tone is emitted each time a key is pressed. A three beep error tone is emitted
when a key is not allowed. Some functions require a key to be pressed and
held. After the hold period times out, a second tone is emitted as the function
is entered. The basic purpose for each key follows. Detailed usage of keys is
described in operating procedures for the transceivers various functions.