RELM WIRELESS CORP. - BK RADIO DPHX51 User Manual

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32                                                                                            BK Radio 
 
 
are received, you can ask your dealer to 
increase the scan delay time (0–7.5 seconds). 
This timer is also used to allow for Talkback 
Scan, Mixed Mode Talkback, and Unit-To-Unit 
Callback. 
HI/LO POWER 
Each channel in the radio can be individually 
programmed to always transmit in Low-Power 
Mode, regardless of the position of the radio's 
top switch (or keypad [FCN] menu setting). If 
the programming for the channel allows high-
power transmissions, the power level can be 
selected with a top switch or the keypad 
menu. 
DTMF ENCODING (Analog Mode Only) 
Keypad-equipped radios can be programmed 
to enable DTMF (Dual Tone Multiple 
Frequency) encoding. To send DTMF tones 
(similar to the tones used by a standard push-
button telephone): 
1.  Press and hold the PTT switch. 
2.
 
  Press any of the keys on the keypad.  
You will hear a sidetone.  
The  FCN, PRI,  ENT, and CLR keys respond 
as DTMF tones A, B, C, and D, respectively. 
ANI ENCODING (Analog Mode Only) 
ANI encoding (Automatic Numeric 
Identification), if enabled, transmits a 
sequence of DTMF tones each time you press 
the PTT switch. You will hear a sidetone. Your 
dealer can program the ANI number to be 
sent. 
If DTMF and ANI are both enabled, the ANI 
tone sequence is transmitted only after the 
[ENT]
 
key is pressed while the PTT switch is 
activated. You will hear a sidetone.  
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*
 
# 
CLR
 
FCN
 
PRI
 
ENT
 
  
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0
   
*
   
#   
CLR
   
FCN 
  
PRI 
  
ENT 
  
DPH Owner’s Manual                                                                           13           
MIXED MODE TALKBACK 
If Mixed Mode Talkback is enabled, 
transmissions initiated while hold time remains 
will be in the same mode as the received 
signal, if the signal was received on the Ready 
to Transmit (RTX) channel.    Depending on 
programming, the RTX channel can be the 
main channel, a held scan or priority channel if 
Talkback Scan is enabled, or the Priority 1 
channel if TX on PR1 is enabled.  TX Mode on 
the RTX channel must be set to MIXED.   
While hold time after a reception remains, 
transmissions will be in the same mode as the 
received signal, regardless of the status of the 
‘TX Digital’ soft switch.  As in Talkback Scan, 
the RTX channel and receive annunciators will 
be displayed for the duration of the timer.   
The talkback timer can be cleared by making 
the held channel invalid.  For instance, if a 
scan channel is being held, turn scan off. 
CHANNEL GROUPS 
 
Radios are separated into groups of 16 
channels each.  Each group of 16 channels 
can be programmed to have an "individual 
personality" with its own set of operational 
features. 
SELECT A GROUP/CHANNEL 
The Group/Channel Selector knob can be 
programmed by your dealer as a Channel 
Selector, a Group Selector, or a Custom 
Group/Channel Selector. 
CHANNEL SELECTOR.    Knob  positions      
1–16 select channels in the group selected by 
the keypad: 
1.  Press the [#] key on the keypad to display 
the current group number. 
               
RX  
 CH          12 
Press PTT 
During Hold Time 
(while the ‘RX’ 
annunciator is lit) 
 
 GRP       01 
Group Number 
 
16
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0
 
*
 
# 
CLR
FCN
PRI
ENT