Service manual

Installation and Programming GPH-CMD VHF Radio
Page 2-6 BK RADIO
the [ENT] key to store the Code Guard value and automatically
advance to the next field.
2.2.1.3.4 TRANSMIT FREQUENCY
After the RX GUARD is set, the ‘TX FREQUENCY’ field appears.
This is the transmitter frequency for Channel 1.
If it is correct, press the [FCN] key to advance to the next field.
If you wish to change it, press the [CLR] key followed by the
frequency in MHz then [ENT] to store the new frequency and
automatically advance to the next field.
Only valid frequencies will be operable.
If you want to operate this channel as a receive-only channel,
press the [CLR] key (setting the display to 0.0) followed by the
[ENT] key. The transmitter will be locked off for this channel.
2.2.1.3.5 TRANSMIT GUARD
After the TX FREQUENCY is set, the ‘TX GUARD’ field appears.
This is the Code Guard value for Channel 1 transmit (0.0
indicates ’no guard’). If this value is correct press the [FCN] key
to advance to the next field. To enter a new value, press the
[CLR] key to reset the display to 0.0. Press the number keys to
enter a Tone Code Guard value. See "Tone Code Guard
Values" in section 2.3.
To enter Digital Code Guard, first press the [CLR] key, then 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 Code Guard Values" in section 2.4.
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 Code
Guard and automatically advance to the next field.
2.2.1.3.6 CHANNEL LABEL
After the TX GUARD is set, the ‘CHAN LABEL’ field appears. If
this label is correct press the [FCN] key to proceed to the entry
point.
If a new channel label is desired, follow the instructions under
"Group Label" in section 2.2.1.2.2.
After the CHAN LABEL is set, the display will return to the
Channel 1 starting point. If you wish to review the frequencies
and Code Guard values in Channel 1, subsequent pressing of
the [FCN] key will show each value and then return to the
Channel 1 starting point.
PROG TX
148.00000
Tx frequency
PROG TX CG
100.0
Tx Guard
PROG TX CG
D 023
Tx Guard
PROG TX
Label 18
Chan label