RELM GPH-CMD, Programming Instruction Manual, Page: 41 / 61

RELM Wireless Corporation 37
receive code guard
PRG TX RX SCN D CMND


home channel
T32 N4 G7
PRG TX RX SCN D CMND

111.0
RX GUARD
This field is the Analog Channel Guard
value for Channel 1 receive.
NOTE: 0.0 indicates carrier squelch
operation (no Channel Guard).
If the displayed value is correct, press the [FCN] key to advance to the
next field.
If a new value is desired, press the number keys 0 thru 9 to enter a
Tone Channel Guard value. See “Tone Channel Guard Values” in
section 2.3.
To enter a Digital Channel Guard value press the [#] key, causing the
letter ‘D’ to appear followed by three zeros. Enter the desired digital
code using keys 0 thru 7 (keys 8 & 9 do not respond). See “Digital
Channel Guard Values”.
Pressing the [PRI] key after the three-digit code has been entered
allows the digital code to be inverted. When the displayed value is
correct, press the [ENT] key to store the Channel Guard value and
automatically advance to the next field.
receive nac
(Digital models only)
PRG TX RX SCN D CMND


home channel
T32 N4 G7
PRG TX RX SCN D CMND

$293
RX NAC
PRG TX RX SCN D CMND


home channel
T32 N4 G7
PRG TX RX SCN D CMND

00659
RX NAC
This field is the Network Access Code
(NAC) for Channel 1 receive. This value is
only used if the receive mode selected was
Digital or Mixed, or if User Channel Guard is
activated.
To see the NAC displayed in hexadecimal
format, press and hold the [#] key.
To return to the decimal display, press and hold the [#] key again.
If the NAC is correct, press the [FCN] key to advance to the next field.
If a new NAC is desired, press the [CLR] key. In decimal mode, valid
entries are 0 – 4095.
The digital equivalent of carrier squelch is achieved by programming
the decimal receive NAC to 3966. The radio will unmute when a digital
signal with any NAC is detected.
In hexadecimal mode, valid entries are $0 - $FFF.