Ritronics RQT-150 Basic Owner's Manual - page 7
Page 5
For assistance, telephone RITRON at 1-800-872-1872 or go to "http://www.ritron.com".
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QUICK
TALK
QC
CODE
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
162.2
XZ
XA
WA
XB
SP
YZ
YA
YB
ZZ
ZA
ZB
1Z
1A
1B
2Z
2A
2B
3Z
3A
3B
4Z
4A
4B
5Z
5A
5B
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
69.4
159.8
165.5
171.3
177.3
No Tone
183.5
189.9
196.6
199.5
206.5
229.1
254.1
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
6Z
6A
6B
7Z
7A
M1
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
QUICK
TALK
QC
CODE
Freq.
( Hz )
Freq.
( Hz )
Other
Radio Brands
Tone
Code
Other
Radio Brands
Tone
Code
* Use Code 44 to select No Tone or for systems without a
Coded Squelch Interference Eliminator feature. Refer to
text at left.
TABLE 2: QUIET CALL TONE CODES
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
*44
45
46
47
48
49
50
51
What is Quiet Call Sub Audible Coded Squelch? The
Quick Talk radio transmitter is compatible with two
communications industry standard sub-audible signaling
formats: QC® (Quiet Call Interference Eliminator) and
DQC
TM
(Digital Quiet Call Interference Eliminator). Both
QC formats function to unlock receivers that are set to
require these codes in order to screen out interference
from other radio systems operating on your same
frequency.
QC® Quiet Call is Ritron’s trade name for what the
communications industry calls sub-audible (below the
range of human hearing) tone squelch or the CTCSS
(Continuous Tone Coded Squelch System). Other radio
manufacturers have other tradenames for what is
essentially the same system. A specific QC code may be
set in your Quick Talk and transmitted with voice messages
to unlock the receivers in your radio system.
DQC
TM
Digital Quiet Call is Ritron’s digital coded squelch,
works the same as QC, except it is a digital code
transmitted with voice messages.
Do I need to program my Quick Talk with a Quiet Call
Code? Your radio system may or may not use coded
signaling. If you set the Quick Talk to your radio frequency
and your radios do not receive its transmissions unless
their "monitor" or "test" button is pressed, then your system
probably uses Coded Squelch. Refer to the manual for one
of your radios or contact your radio dealer or Ritron if you
are unsure about this issue.
If your Quick Talk was previously programmed with a Quiet
Call code, it may be removed by following the procedure
below using the "No Tone" code of 44 as shown in the
table.
To Program A Quiet Call Sub-Audible Squelch Code:
a. Determine the Quiet Call code tone that your radio
system uses. If your system uses Digital Quiet Call,
go to the next page.
b. Select the desired Tone Code from Table 2 at right.
If your radio system does not use coded squelch,
use the "44" no-tone code. Write down this Quick
Call code.
c. Pick up the telephone receiver, and listen for the
acknowledge tone.
d. Dial "21", then the 2-digit QC Code for the selected
frequency.
For example, if your Quiet Call frequency is 136.5
Hz or code 21, dial: "21-21".
Quick Talk should respond with a confirmation tone.
e. You may either hang up or continue programming
additional features.
PROGRAMMING THE QUIET CALL SUB-AUDIBLE CODED SQUELCH
INTERFERENCE ELIMINATOR