RadioShack Pro 93 Handheld Scanner Owners Manual

							51Trunking Operation
Important: 
To listen to the transmission, the mode of the
programmed channel must be the same as that of the
trunking channel (MOT, or ED).
When an ID code is received, the ID list for the bank is
searched, and if found, the text name stored for the ID
appears. If not found, scanning resumes immediately
unless the bank is in open trunking mode.
Note:
 There might be more than one talk group transmit-
ting at a time in some Motorola trunking systems. If you
set the scanner to manually tune in Motorola trunking
mode, you will hear the talk group on that channel, but
the display will alternate between all active IDs.
Trunking group frequencies are included in the supplied
Trunking Guide. Frequency fleet map and talk group in-
formation is also widely available on the Internet, (for ex-
ample, at 
www.trunkscanner.com).
UNDERSTANDING TRUNKING
In the past, groups that transmit frequently, such as po-
lice departments, could transmit on only a few frequen-
cies. This resulted in heavy traffic and often required 2-
way radio users to wait for a specific frequency to clear
before transmitting. Trunked systems allow more groups
of 2-way radio users to use fewer frequencies. Instead of
selecting a specific frequency to transmit on, a trunked
system chooses one of several frequencies when the 2-
way radio user transmits. The system automatically
transmits the call on that frequency, and also sends a
code that identifies that 2-way radio users transmission
on a control channel.
Your scanner lets you easily hear both the call and re-
sponse transmissions for that 2-way radio user and
therefore follow the conversation. For EDACS and Mo-
torola (above 406 MHz range), the scanner monitors the
control channel between each transmission to identify
talk groups. 
						

							52
Trunking Operation
SETTING SQUELCH FOR THE 
TRUNKING MODE
Your scanner automatically mutes the audio during trunk
scanning when it decodes control channel data. Howev-
er, we recommend you turn 
SQUELCH clockwise and
leave it set to a point just after the hissing sound stops.
This lets the scanner quickly acquire the data channel.
PROGRAMMING TRUNKING 
FREQUENCIES
You program trunking frequencies the same as non-
trunked frequencies, except that you must store the ap-
propriate mode (MOT or ED) with each frequency.
Notes:
• You can scan only one type of trunked frequency,
either EDACS or Motorola in a bank at one time.
You can, however, mix conventional channels and
frequencies in a bank.
• If you are programming trunked frequencies for
Motorola Type I and hybrid systems, you must first
program the fleet map (see “Programming Fleet
Maps” on Page 56).
• If you are programming frequencies for an EDACS
system you must store them in the Logical Channel
Number order (usually listed as LCN#). For exam-
ple, LCN1 would go into channel 01 for the current
bank, and LCN2 would go into channel 02.
Follow these steps to program trunked frequencies:
1. Press 
PGM and press (or hold down) 8
88 8 or 9
99 9 to
select the bank. 
Note:
 To move through the bank selection faster,
press 
PGM then FUNC and hold down 8
88 8 or 9
99 9. To
move through the banks one at a time, repeat the
,òòòUôô
,òòòUôô,òòòUôô ,òòòUôô  ôö)
 ôö) ôö)  ôö)
òôòòòòò
òôòòòòòòôòòòòò òôòòòòò
â8EBýòý
â8EBýòýâ8EBýòý â8EBýòý á?ýòò
á?ýòòá?ýòò á?ýòò 
						

							53Trunking Operation
sequence of PGM, FUNC then 8
88 8or 9
99 9 until you
reach the desired bank.
2. Press 
TRUNK to enter the ID program mode.
3. Repeatedly press 
MODE to select CEJ
CEJCEJ CEJ for Motorola,
or 
;:
;:;: ;: for the EDACS (GE/Ericsson) system to scan.
This sets the talk group ID decoding method to be
used for the bank.
Notes:
• If you select 
*FKý KILEB
						

							54
Trunking Operation
8
88 8to access the next open channel then enter the
frequencies. (See “Storing Known Frequencies into
Channels” on Page 25).
7. Press 
SCAN to start scanning.
Notes: 
• If you make an error in the entry process, press 
CL
as often as needed to erase the incorrect data.
• If you enter a frequency that has already been
entered, the scanner sounds an error tone and dis-
plays 
 LGCôý=
 LGCôý= LGCôý=  LGCôý= and the channel number that has been
duplicated. If the dual entry is an error press 
CL and
enter the correct frequency. If the dual entry is inten-
tional press 
ENTER to accept.
• You may replace any frequency by selecting the
bank and channel, pressing 
PGM and entering the
new frequency.
Programming Motorola Trunking Systems 
(UHF-Lo)
You can program the scanner to receive transmissions
in the UHF-Lo band (406-512 MHz) of the Motorola
trunking system. You can receive these transmissions
by checking the trunking systems control channel. You
must program the systems base frequency and offset
frequency to do this.
Notes:
• Base and offset frequencies vary for each type of
trunking system. You can get information about
these frequencies for the trunking system you want
to scan using 
www.trunkscanner.com, other Internet
sources, or locally-published guidebooks.
,òòñUôô
,òòñUôô,òòñUôô ,òòñUôô  ôö)
 ôö) ôö)  ôö)
òôòòòòò
òôòòòòòòôòòòòò òôòòòòò
â8EBýòý
â8EBýòýâ8EBýòý â8EBýòý á?ýòñ
á?ýòñá?ýòñ á?ýòñ
Next channel 
						

							55Trunking Operation
• If you try to program an offset frequency in the UHF-
Hi bands (806-960 MHz), the scanner  ignores  the
entry.
Follow these steps to program Motorola trunking fre-
quencies in the UHF-Lo band:
1. Press 
PGM then TRUNK to enter the ID program
mode.
2. Press 
FUNC and press (or hold) 8
88 8 or 9
99 9 to select
the bank.
3. Press 
MODE and select )+0
)+0)+0 )+0.
4. Press 
FUNC then 2. The display indicates â8J<
â8J
						

							56
Trunking Operation
• On the 900 MHz trunking band, you do not need to
set the base frequency (base, offset, step).
Follow these steps to program 800 MHz band Motorola
trunking.
1. Press 
PGM then TRUNK to enter the ID program
mode.
2. Press 
FUNC then 8
88 8 or 9
99 9 to select the desired
bank.
3. Press 
MODE and select Motorola trunking mode.
4. Press 
FUNC then 3. 1J
						

							57Trunking Operation
4. Press 8. âCF:BýòýJ@Q
						

							58
Trunking Operation
6. Press ENTER for each entry. If you make a mistake,
press 
CL and enter the correct size code.
Notes:
 
• The default setting of the bank is for Motorola
Type II. However, if you set Type I and you want
to return to Type II, enter 15 at Step 5.
• To confirm the input, repeat Steps 1–5 and press
ENTER. Each time you press ENTER, you confirm
the size code. If you find an error, press 
CL and
begin again at Step 1.
7. Press 
SCAN to start scanning.
Talk Group IDs
There are 10 talk group ID banks and each ID bank has
5 sub-banks. Each sub-bank has 20 ID locations. You
can program up to 100 talk group IDs in each bank, so
you can program up to 1,000 talk group IDs in 10 banks.
When the scanner stops on a transmission in the Motor-
ola, or EDACS mode, it checks to see if the ID has been
stored. In the closed mode, the scanner only stops on
the transmission and displays its text tag if you have
stored and not locked out the ID. In the open mode, the
scanner always stops on a transmission, but it displays
the IDs text tag if you have stored the ID.
Storing Talk Group IDs
To store a talk group ID, press TRUNK when the scanner
stops on a voice channel transmission or when a talk
group ID is indicated in the manual mode. The bottom
line indicates where the ID was stored as 
% ý J8M
						

							59Trunking Operation
The first 4
44 4 in % ýJ8M
						

							60
Trunking Operation
9. To store the next ID memory in sequence, press 8
88 8
and repeat Step 4.
10. Press 
SCAN to start scanning.
Notes:
• If you made a mistake in Step 4, 
%EM8C@;ý % 
%EM8C@;ý % %EM8C@;ý %  %EM8C@;ý % .
appears and the scanner beeps when you press
ENTER. Start again at Step 3.
• You can enter either decimal or AFS code for ED
(EDACS) ID. The default setting is decimal ID
entry. When you press 
FUNC then 2, ã/ý=FID8K
ã/ý=FID8Kã/ý=FID8K ã/ý=FID8K
appears for about 2 seconds. Now you can enter
the ID code with AFS format.
• If you entered an ID code that is already stored in
another ID channel, 
 LGCý % 
 LGCý %  LGCý %   LGCý %  appears. If you want
to store the ID code, press
 ENTER. To cancel the
operation, press 
CL.
Talk Group ID Hold
You can set your scanner to follow a trunking signal that
you want to track during scanning. Hold down 
TRUNK for
more than 2 seconds. 
% ý?FC;ý+*ô
% ý?FC;ý+*ô% ý?FC;ý+*ô % ý?FC;ý+*ô appears.
When ID hold is activated and the scanner receives a
voice channel, the scan indication 
/
// / at the first digit in the
top line is changed to 
$
$$ $.
To release ID hold, press 
SCAN or TRUNK.
8Wdaý&#&
8Wdaý&#&8Wdaý&#& 8Wdaý&#& ED
EDED ED
?:ýD
?:ýD?:ýD ?:ýDe$
e$e$ e$ý&
ý&ý& ý&
CEJ0ýded[
CEJ0ýded[CEJ0ýded[ CEJ0ýded[
Next location
8Wdaý&#&
8Wdaý&#&8Wdaý&#& 8Wdaý&#& ED
EDED ED
?:ýD
?:ýD?:ýD ?:ýDe$
e$e$ e$ý&&
ý&&ý&& ý&&
CEJ0ý&(//(
CEJ0ý&(//(CEJ0ý&(//( CEJ0ý&(//(
:kfbý?:ý#(
:kfbý?:ý#(:kfbý?:ý#( :kfbý?:ý#(
Duplication