Operating instructions
DMH Series VHF Radio  Installation and Programming 
BK RADIO  Page 2-13 
2.2.3.4  RECEIVE ANALOG CHANNEL GUARD 
The next field is the Analog Channel Guard value for Channel 1 receive.  
This value is only used if the receive mode selected was Analog or 
Mixed, or if User Channel Guard is activated. The upper display will 
show ‘PRG RX CG' and the lower part of the display will show the 
programmed guard. 
NOTE: 0.0 indicates carrier squelch operation (no Channel Guard). 
1.  If the displayed value is correct, press the [FCN] key to advance to 
the next field. 
2.  If a new value is desired, press the [CLR] key to reset the display to 
0.0. Press the number keys 0 thru 9 to enter a CTCSS Channel 
Guard value. See "CTCSS Channel Guard Values" in section 2.4 of 
this manual. Press the [ENT] key to store the new value and 
automatically advance to the next field. 
3.  To enter a CDCSS Channel Guard value press the [#] key, causing 
the letter ‘D’ to appear followed by three zeros. Enter the desired 
code using keys 0 thru 7 (keys 8 & 9 do not respond). See "CDCSS 
Channel Guard Values" in section 2.5 of this manual. Pressing the 
[PRI] key after the three-digit code has been entered allows the code 
to be inverted (a dash appears to the right of the number). When the 
displayed value is correct, press the [ENT] key to store the Channel 
Guard value and automatically advance to the next field. 
2.2.3.5 RECEIVE NAC 
The next 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. The upper part of the 
display will show ‘PRG RX ID CG’. The lower part of the display will 
show ‘NACXXXX’ where XXXX is the Network Access Code in decimal. 
1.  If the NAC is correct, press the [FCN] key to advance to the next 
field. 
2.  If a new NAC is desired, press the [CLR] key followed by the digits 
of the desired NAC. Then press the [ENT] key to store this NAC and 
automatically advance to the next field. 
2.2.3.6 SQUELCH MODE 
The next field is the Receiver Squelch Mode for Channel 1. This setting 
is only used if the receive mode selected was Digital or Mixed, or if User 
Channel Guard is activated. The upper part of the display will show 
‘PRG RX ID’. 
The lower part of the display will show ‘SQL-XXX’ where XXX is ‘NRM’ 
for normal squelch or ‘SEL’ for selective squelch. 
Normal squelch opens on a matching NAC and any Talk Group ID or 
Individual Unit ID. Selective squelch requires the correct NAC and the 
correct Talk Group ID, and for Unit-to-Unit calls, requires a matching 
Individual ID. 
1.  If the Squelch Mode is correct, press the [FCN] key to advance to 
the next field. 
 PRG RX   CG 
D365- 
 PRG  RX  CG 
 000.0 
 PRG  RX  ID CG 
 NACXXXX 
 PRG  RX  ID 
SQL--XXX










